CN107706351A - A kind of positive plate, preparation method and include its lithium ion battery - Google Patents

A kind of positive plate, preparation method and include its lithium ion battery Download PDF

Info

Publication number
CN107706351A
CN107706351A CN201710941076.8A CN201710941076A CN107706351A CN 107706351 A CN107706351 A CN 107706351A CN 201710941076 A CN201710941076 A CN 201710941076A CN 107706351 A CN107706351 A CN 107706351A
Authority
CN
China
Prior art keywords
positive plate
active layer
lithium
conductive layer
positive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710941076.8A
Other languages
Chinese (zh)
Inventor
潘凌超
吴小珍
杨顺毅
黄友元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Battery Nanotechnology Co Ltd
Original Assignee
Shenzhen Battery Nanotechnology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Battery Nanotechnology Co Ltd filed Critical Shenzhen Battery Nanotechnology Co Ltd
Priority to CN201710941076.8A priority Critical patent/CN107706351A/en
Publication of CN107706351A publication Critical patent/CN107706351A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1397—Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The invention discloses a kind of positive plate, preparation method and include its lithium ion battery.The positive plate of the present invention includes：Collector, active layer on a current collector is formed, and the Surface coating formed on active layer has the conductive layer of 0.1nm 30nm thickness inert substances, wherein, positive active material and benefit lithium composition are contained in the active layer.The present invention positive plate it is simple in construction, stably, security it is good, it is and good with existing manufacturing process compatibility, not only have and mend lithium function, also overcome the problem of mending the dissolving of lithium composition and bad electric conductivity, improve the energy density, cycle life and high rate performance of lithium ion battery.

Description

A kind of positive plate, preparation method and include its lithium ion battery
Technical field
The present invention relates to lithium ion field, is related to a kind of positive plate, preparation method and includes its lithium ion battery, especially It is related to a kind of lithium-rich anode piece, preparation method and includes its lithium ion battery.
Background technology
Compared to lead-acid battery, nickel-cadmium cell and Ni-MH battery, lithium ion battery has can force density height, operating voltage Height, good cycle, self discharge are small, memory-less effect and it is environment-friendly the features such as, it is wide since being commercialized since 1991 It is general to be applied to 3C digital domains.However, with smart mobile phone and booming, the energy of existing lithium ion battery of electric automobile Metric density and cycle life can not increasingly meet the needs of it is to high-energy-density and long circulation life.The reality of full battery can Substantial connection be present with the formation of energy density and cycle life and the coulombic efficiency first and negative pole SEI films of lithium ion battery, Efficiency between 90% to 95%, has the hard carbon of higher energy density and the head of silicon carbon material to the graphite being widely used first It is secondary can not reverse efficiency more than 15%, cause it to consume substantial amounts of activity during solid electrolyte membrane (SEI films) is formed Lithium, so as to cause the decline of the energy density of whole battery core.By additionally mending lithium, the efficiency first of battery core can be improved and followed Ring performance.At present, the benefit lithium mode of report mainly has four kinds, is respectively：Negative pole electrochemistry mends lithium, negative pole chemistry mends lithium, positive pole Electrochemistry mends lithium and positive pole chemistry mends lithium.Wherein, electrochemistry mends lithium, and electrochemistry is mended as disclosed in patent CN201620097015.9 Lithium device, complex process, is not suitable for industrialized production.Chemistry mends lithium, especially by the mode for mending lithium additive, technique letter List, cost are cheap and benefit lithium amount is controllable, are highly suitable for industrialized production.It is industrial with the most use that negative pole chemistry, which mends lithium, Mend lithium mode, wherein, it is and most widely used with stabilized lithium metal (SLMP), still, negative pole mend lithium material generally have compared with Low potential and high chemical reactivity, very big process safety sex chromosome mosaicism, also, itself and existing solvent and binding agent be present There is compatibility issue, for example, SLMP will be with conventional solvent NMP reactions of sizing mixing.Positive pole chemistry mends lithium material potential height, with showing Some lithium battery processing technology compatibility are good, are selectable another benefit lithium methods.
CN201210350770.x sprays the organic solution containing lithium salts directly on positive plate in an inert atmosphere, then The benefit lithium mode of drying process is done, still, this benefit lithium mode, on the one hand, inflammable organic liquid easily causes potential safety hazard, separately On the one hand, caused a large amount of organic gas can pollute air.
Except the above-mentioned lithium material that will mend is applied directly to benefit lithium mode in material, also have by anode strip or battery knot The benefit lithium mode for individually mending lithium layer is designed in structure, such as CN201310336418.5 and CN201310463949.0, generally mends lithium Agent is all lithium piece or lithium metal powder material, great process safety sex chromosome mosaicism be present, and higher with electrolyte reactivity, This allow mends mode of the lithium layer directly with electrolyte contacts, can not also solve to mend the problems of dissolution of lithium agent in the electrolytic solution.
Although CN 201410149314.8 provides a kind of lithium ion battery and its manufacture method, strengthened using plasma Type atomic layer deposition method uniformly plates receiving for 0.2-10nm in the positive plate surface of battery, negative plate surface and barrier film Rice protective layer, the cycle performance of battery and security performance are improved with this, it is still, directly lazy in pole piece and membrane surface plating nanometer Property protective layer is easily reduced the high rate performance of battery, and used plasma enhanced atomic layer deposition method processing cost is held high It is expensive.
Therefore, it is necessary to which battery energy density can be effectively improved by mending lithium composition on a small quantity by developing one kind, and can prevents from mending Lithium additive and active material are dissolved by the electrolyte the benefit lithium mode or structure for causing cycle performance to decline, and this benefit lithium mode Or structure does not influence the high rate performance of battery.
The content of the invention
The problem of being proposed for background technology, essence can be formed for negative pole SEI films it is an object of the invention to provide a kind of Really supplement the positive plate of irreversible active lithium consumption, preparation method and include its lithium ion battery, the positive plate cyclicity Energy is good, energy density is high.
For the above-mentioned purpose, the present invention uses following technical scheme：
In a first aspect, the invention provides a kind of positive plate, especially a kind of based lithium-ion battery positive plate, the positive plate Including：
Collector；
Active layer containing positive active material and benefit lithium composition, and active layer is formed on a current collector；
Surface coating has the conductive layer of 0.1nm-30nm thickness inert substances, and conductive layer is formed on active layer.
The positive plate of the present invention is a kind of lithium-rich anode piece.
The structural representation of the positive plate of the present invention referring to Fig. 1, wherein, 1 represents conductive layer, 11 represent it is lazy in conductive layer Property material, 2 represent active layer, and 3 represent collector.
In the present invention, conductive layer is the conductive layer that Surface coating has ultra-thin inert substance, and " ultra-thin " refers to：What is coated is lazy The thickness (i.e. the thickness of inertia clad) of property material in 0.1nm-30nm, such as 0.1nm, 0.5nm, 1nm, 2nm, 2.5nm, 3.5nm, 5nm, 7nm, 8nm, 10nm, 12nm, 15nm, 18nm, 20nm, 22.5nm, 25nm, 27nm or 30nm etc., it is preferably 0.5nm-10nm, in this preferred scope 0.5nm-10nm, both having reached prevents that metal ion is dissolved by the electrolyte in active layer Purpose, reduce influence of the inertia clad to pole piece electric conductivity again, improve the high rate performance of battery.
In the present invention, positive active material is the active material of recyclable removal lithium embedded, and specific species is not particularly limited, Can be the one or more in existing anode material for lithium-ion batteries, typical but non-limiting example has：LiFe1-xMxPO4 (M be Mn or V in one or more, 0≤x≤1), LiMn2O4、LiCoO2、Li1+xL1-y-zMyNzO2(L, M, N Co, Mn, One or more in Ni, Fe, Al, Mg, Ga, Ti, Cr, Cu, Zn, Mo, F, I, S or B, -0.1≤x≤0.2,0≤y≤1,0≤ Z≤1,0≤y+z≤1.0), LiNi0.5-xMn1.5-yMx+yO4(- 0.1≤x≤0.5,0≤y≤1.5, M Li, Co, Fe, Al, Mg, One or more in Ca, Ti, Mo, Cr, Cu or Zn) in any one or at least two combination.Preferably LiFePO4、 LiCoO2、LiMn2O4、Li1+xNi1-y-zMyNzO2(one kind in M, N Co, Mn, Fe, Al, Mg, Ga, Ti, Cr, Cu, Zn or Mo Or a variety of, -0.1≤x≤0.2,0≤y≤1,0≤z≤1,0≤y+z≤2/3).
In the present invention, positive active material can also be the positive active material of coating modification, such as LiFePO4Can be LiFePO4 after carbon coating, as LiFePO4/C。
Currently preferred technical scheme is used as below, but not as the limitation to technical scheme provided by the invention, is led to Following preferable technical scheme is crossed, can preferably reach and realize the technical purpose and beneficial effect of the present invention.
Preferably, the benefit lithium composition is M/Li2O mixtures, Li2NiO2、Li6Co1-xMnxO4、Li5Fe1-yMyO4Or Li5Fe1-z NzO4In any one or at least two combination, wherein, in M Cu, Pb, Ni, Co, Mn, Ru, Mo or Fe One or more, in N Mn, Al, Ti or Mg any one or at least two combination, 0≤x≤0.3,0≤y≤1,0≤z ≤0.5.Above-mentioned benefit lithium composition has high charging capacity theoretical first in battery operating voltage window, exceedes 970mAh/g, and almost there is no discharge capacity, therefore, the benefit lithium addition dosage mended needed for lithium effect for reaching same is less, It is more beneficial for improving the specific discharge capacity of whole pole piece.Its (mending lithium composition) irreversible capacity can supplement SEI films to activity The consumption of lithium.
It is highly preferred that the benefit lithium composition is Co/Li2O mixtures, Li6Co1-xMnxO4Or Li3In N any one or extremely Few two kinds combination, wherein 0.03≤x≤0.1.
Heretofore described " M/Li2O mixtures " refer to M and Li2O nano-mixture.
Preferably, counted using the gross mass of the active layer as 100wt%, the positive active material is total with benefit lithium composition Content is 90wt%-99wt%, for example, 90wt%, 91wt%, 92wt%, 92.5wt%, 93wt%, 94wt%, 95wt%, 96wt%, 97wt%, 98wt% or 90wt% etc..
In the present invention, the addition of lithium composition is mended according to the coulombic efficiency irreversible first of negative material in lithium ion battery Calculate, consider the result being calculated and mend the influence that the addition of lithium composition is played positive active material capacity, design Mend the preferred addition of lithium composition.
Preferably, counted using the positive active material gross mass as 100wt%, the content for mending lithium composition is 1wt%- 20wt%, for example, 1wt%, 3wt%, 5wt%, 7.5wt%, 10wt%, 12wt%, 13.5wt%, 15wt%, 16wt%, 18wt% or 20wt% etc., preferably 1wt%-10wt%.
Preferably, the ratio between surface density of the active layer and conductive layer is 40:1 to 60:1, such as 40:1、42:1、45:1、 48:1、50:1、52:1、53:1、54:1、55:1、56:1、58:1 or 60:1 etc..If ratio is too high, does not have and improve pole piece conduction The effect of property and protection activity layer；It if ratio is too low, can decline pole piece energy density.
Preferably, the inert substance is Al2O3、ZrO2、ZnO、TiO2、LiAlO2、SiO2、HfO2、B2O3、V2O5、 Nb2O5、InO2、SnO2、ITO、MgO、MoO3Or Ta2O5In any one or at least two combination, preferably MgO, Al2O3、 ZrO2、TiO2Or LiAlO2In any one or at least two combination.
In the present invention, the number of plies of the inert substance to being coated in conductive layer is not construed as limiting, and can be one layer or more Layer.
As the optimal technical scheme of positive plate of the present invention, conductive agent and binding agent are also contained in the active layer.
Preferably, the conductive layer is made up of conductive agent, binding agent and inert substance.
Preferably, the conductive agent in the active layer and conductive layer is independently selected from carbon black conductive agent SP, graphite agent In S-O, graphite agent KS-6, CNT CNTs, carbon fiber VGCF or acetylene black any one or at least two group Close.
Preferably, the binding agent in the active layer and conductive layer is independently selected from Kynoar (Polyvinylidene fluoride, PVDF), polytetrafluoroethylene (PTFE) (Polytetrafluoroethene, PTFE), polyethylene Alcohol (polyvinyl alcohol, PVA), hydroxymethyl cellulose (CarboxymethylCellulose, CMC) or butadiene-styrene rubber In (Polymerized Styrene Butadiene Rubber, SBR) any one or at least two combination.
Preferably, the mass ratio of positive active material, conductive agent, binding agent and benefit lithium composition is (90-98):(1-5): (1-3):(1-10)。
Preferably, in the conductive layer, the mass ratio of binding agent and conductive agent is 20:80-40:60.
As the further preferred technical scheme of positive plate of the present invention, the positive plate includes：
Collector, active layer on a current collector is formed, and the Surface coating formed on active layer has 0.5-10nm The conductive layer of thick inert substance；
Wherein, containing positive active material and positive active material gross mass 1-10wt% benefit is accounted in the active layer Lithium composition；
The benefit lithium composition is Co/Li2O、Li6Co1-xMnxO4Or Li3In N any one or at least two combination, its In 0.03≤x≤0.1.
In this optimal technical scheme, x is such as 0.03,0.04,0.05,0.06,0.08 or 0.1.
Second aspect, the present invention provide the preparation method of positive plate as described in relation to the first aspect, and methods described includes following Step：
(1) using the raw material containing positive active material and benefit lithium composition, active layer is formed on a current collector；
(2) conductive layer is formed on active layer, and in the Surface coating 0.1nm-30nm thickness inert substances of conductive layer.
As the optimal technical scheme of the method for the invention, the process of step (1) is：Will contain positive active material and The slurry for mending lithium component is applied on collector, is dried.
Preferably, the process that step (2) forms conductive layer on active layer is：The slurry of conductive agent and binding agent will be included It is applied on the pole piece that step (1) obtains, dries.
Preferably, step (2) the method that the Surface coating inert substance of conductive layer uses for：Physical vapour deposition (PVD) (Physical Vapor Deposition, PVD), ald (Atomic layer deposition, ALD) or magnetic control In sputtering any one or at least two combination.
Preferably, methods described coats the step of carrying out roll-in before, preferably roll-in after being additionally included in step (2) drying To compacted density in 3g/cm3-4g/cm3；
The third aspect, the present invention provide a kind of lithium ion battery, including：Positive plate, negative plate, it is arranged at positive plate and bears Barrier film between pole piece, and electrolyte, the positive plate of the lithium ion battery is using the positive plate described in first aspect.
Preferably, the electrolyte is the organic solution of lithium salts.
In the present invention, the particular type of lithium ion battery is not construed as limiting, can be cylindrical battery, aluminum-shell battery or Soft Roll Battery etc..
Compared with the prior art, the present invention has following excellent effect：
The invention provides it is a kind of it is simple, stably, safely and with existing manufacturing process compatibility it is good there is benefit lithium work( The based lithium-ion battery positive plate of energy, the positive plate, which not only has, mends lithium function energy, and inertia clad can prevent from mending lithium composition Dissolving, the problem of mending the dissolving of lithium composition and bad electric conductivity is also overcomed, improve energy density, the circulation longevity of lithium ion battery Life and high rate performance.
Brief description of the drawings
Fig. 1 is the structural representation of the positive plate of the present invention, wherein, 1 represents conductive layer, and 11 represent the inertia in conductive layer Material, 2 represent active layer, and 3 represent collector.
Fig. 2 is 18650 cylindrical battery cyclic curve in embodiment 8.
Fig. 3 is 18650 cylindrical battery cyclic curve in embodiment 9.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
Embodiment 1
The present embodiment provides a kind of positive plate, and the preparation method of the positive plate is as follows：
1) by LiNi0.6Co0.2Mn0.2O2, SP, PVDF and Co/Li2O in mass ratio 95:1.5:1.2:2.3 mixing homogenate, are adopted By the use of NMP as solvent, solution solid content is 77.5%, gained slurry is coated in aluminum foil current collector using coating machine, pole piece One side density is 105g/m2, gained pole piece is dried, active layer is formed in aluminum foil current collector.
2) by PVDF and SP in mass ratio 40:60 mixing homogenate, using NMP as solvent, solution solid content is 77.5%, Gained slurry is coated in obtained by step 1) on pole piece using coating machine, one side load capacity 2.1g/m2, by gained pole piece at 80 DEG C After lower drying, roll-in to compacted density is 3.5g/cm3。
3) pole piece obtained by step 2) is positioned in ALD equipment reaction chamber, injection isopropyl titanate gas to reaction chamber extremely Pressure is 1 support, is vacuumized, and injection nitrogen to reaction chamber to pressure is 20 supports, extracts nitrogen, injection vapor to reaction chamber to pressure out Strong is 1 support, is vacuumized, and injection nitrogen is 20 supports to reaction chamber to pressure, iterative cycles 15 times, obtains required positive plate, chamber Reaction temperature is 85 DEG C, and Surface coating is formed on active layer the conductive layer of inert substance, namely obtains positive plate.
In the positive plate that the present embodiment obtains, conductive layer surface is coated with 5nm TiO2Inert layer.
Embodiment 2
The present embodiment provides a kind of positive plate, and the preparation method of the positive plate is as follows：
1) by LiNi0.815Co0.135Al0.05O2, CNTs, PVDF and Li6Co0.95Mn0.05O4In mass ratio 95:1.2:1:2.8 Mixing homogenate, using NMP be used as solvent, solution solid content be 77.5%, gained slurry is coated in by aluminium foil collection using coating machine On fluid, pole piece one side density is 110g/m2, gained pole piece is dried, active layer is formed in aluminum foil current collector.
2) by PVDF and VGCF in mass ratio 20:80 mixing homogenate, it is as solvent, solution solid content using NMP 77.5%, gained slurry is coated in obtained by step 1) on pole piece using coating machine, one side load capacity 2.2g/m2, by gained pole After piece is dried at 80 DEG C, roll-in to compacted density is 3.5g/cm3。
3) pole piece obtained by step 2) is positioned in magnetron sputtering apparatus, aluminium target purity is 99.999%, and base vacuum is 5.0×10-3Pa, working gas are 99.99% argon gas, and reacting gas is 99.999% oxygen.Controlled with mass flowmenter Its flow is made, gas pressure intensity is read with vacuum meter.Sputtering parameter：It is 45sccm, oxygen flow 23sccm to be passed through argon flow amount, Oxygen concentration 26.7%, sputtering pressure 6.8 × 10-2Pa, target power output 0.5Kw, target-substrate distance 14cm, sputtering time 5min.After sputtering Required positive plate is obtained, Surface coating is formed on active layer the conductive layer of inert substance, namely obtains positive plate.
In the positive plate that the present embodiment obtains, conductive layer surface is coated with 8nm Al2O3Inert layer.
Embodiment 3
1) by LiNi0.7Co0.2Mn0.1O2, KS-6, PTFE and Li3N in mass ratio 96:1.2:1.0:1.8 mixing homogenate, are adopted By the use of NMP as solvent, solution solid content is 70%, gained slurry is coated in aluminum foil current collector using coating machine, pole piece list Surface density is 115g/m2, gained pole piece is dried, active layer is formed in aluminum foil current collector.
2) by PVDF and acetylene black in mass ratio 50:50 mixing homogenate, it is as solvent, solution solid content using NMP 80%, gained slurry is coated in obtained by step 1) on pole piece using coating machine, one side load capacity 2.3g/m2, by gained pole piece After being dried at 75 DEG C, roll-in to compacted density is 3.5g/cm3。
3) pole piece obtained by step 2) is positioned in ALD reaction chambers, injection trimethylaluminum gas to reaction chamber to pressure For 1 support, vacuumize, injection nitrogen to reaction chamber to pressure is 20 supports, extracts nitrogen out, and injection vapor is to reaction chamber to pressure 1 support, is vacuumized, and injection nitrogen to reaction chamber to pressure is 20 supports, is 1 in injection tert-butyl alcohol lithium gas to reaction chamber to pressure Support, is vacuumized, and injection nitrogen to reaction chamber to pressure is 20 supports, extracts nitrogen out, and injection vapor to reaction chamber to pressure is 1 Support, is vacuumized, and injection nitrogen to reaction chamber to pressure is 20 supports, iterative cycles 7 times, obtains required positive plate, chamber reaction temperature Spend for 90 DEG C, Surface coating is formed on active layer the conductive layer of inert substance, namely obtains positive plate.
In the positive plate that the present embodiment obtains, conductive layer surface is coated with 7nm LiAlO2Inert layer.
Embodiment 4
The present embodiment provides a kind of positive plate, and the preparation method of the positive plate is as follows：
1) by LiNi0.8Co0.15Ti0.05O2, graphite agent S-O, PVDF and Li6Co0.96Mn0.04O4In mass ratio 95: 1.4:1.3:2.3 mixing homogenate, using NMP be used as solvent, solution solid content be 85.8%, gained slurry is applied using coating machine Overlay in aluminum foil current collector, pole piece one side density is 120g/m2, gained pole piece is dried, activity is formed in aluminum foil current collector Layer.
2) by CMC and carbon black conductive agent SP in mass ratio 35:65 mixing homogenate, using NMP as solvent, solution solid content For 68.5%, using coating machine by gained slurry coated in obtained by step 1) on pole piece, one side load capacity 2.4g/m2, by gained After pole piece is dried at 85 DEG C, roll-in to compacted density is 3.5g/cm3。
3) pole piece obtained by step 2) is positioned in electron beam PVD equipment, use the purity of zirconium oxide target for 99.9%, it is evacuated to 3 × 10-2Pa, after pole piece is heated into 100 DEG C with heating gun, starts to evaporate target, evaporate rifle voltage 13kV, evaporation current 1-1.5A, sedimentation time 5s, Surface coating is formed on active layer the conductive layer of inert substance, namely Obtain positive plate.
In the positive plate that the present embodiment obtains, conductive layer surface is coated with 10nm ZrO2Inert layer.
Embodiment 5
The present embodiment provides a kind of positive plate, and the preparation method of the positive plate is as follows：
1) by LiFe0.5Mn0.5PO4, CNTs, PVDF and Li2NiO2In mass ratio 95:1.6:1.1:2.3 mixing homogenate, are adopted By the use of NMP as solvent, solution solid content is 82%, gained slurry is coated in aluminum foil current collector using coating machine, pole piece list Surface density is 115g/m2, gained pole piece is dried, active layer is formed in aluminum foil current collector.
2) by PVDF and VGCF in mass ratio 25:75 mixing homogenate, it is as solvent, solution solid content using NMP 69.5%, gained slurry is coated in obtained by step 1) on pole piece using coating machine, one side load capacity 2.4g/m2, by gained pole After piece is dried at 78 DEG C, roll-in to compacted density is 3.5g/cm3。
3) pole piece obtained by step 2) is positioned in magnetron sputtering apparatus, magnesium target purity is 99.997%, and base vacuum is 5.0×10-3Pa, working gas are 99.99% argon gas, and reacting gas is 99.999% oxygen.Controlled with mass flowmenter Its flow is made, gas pressure intensity is read with vacuum meter.Sputtering parameter：It is 43sccm, oxygen flow 22sccm to be passed through argon flow amount, Oxygen concentration 27.7%, sputtering pressure 6.9 × 10-2Pa, target power output 0.5Kw, target-substrate distance 13cm, sputtering time 3min.After sputtering Required positive plate is obtained, Surface coating is formed on active layer the conductive layer of inert substance, namely obtains positive plate.
In the positive plate that the present embodiment obtains, conductive layer surface is coated with 4nm MgO inert layers.
Embodiment 6
In the present embodiment, the making of button half-cell uses normal process, and negative pole uses lithium metal, and electrolyte used is 1M LiPF6Organic solvent, organic solvent is volume ratio 1:1 EC/DEC mixed solvents, by the positive pole in normal embodiment 1 Piece makes battery by normal button half-cell manufacture craft.
Embodiment 7
In the present embodiment, the making of button half-cell uses normal process, and negative pole uses lithium metal, and electrolyte used is 1M LiPF6Organic solvent, organic solvent is volume ratio 1:1 EC, DEC mixed solvent, by the positive pole in normal embodiment 2 Piece makes battery by normal button half-cell manufacture craft.
Embodiment 8
In the present embodiment, 18650 cylindrical batteries are made as normal process, design capacity 2.3Ah, and battery makes specific Step includes：Dispensing, homogenate, coating, tabletting, continuous rolling cut, winding, sheath body, electric welding, folding lug, laser welding, vacuum are dried Roasting, fluid injection, chemical conversion and aging.In the present embodiment, negative electrode active material is Delanium, and used in battery electrolyte composition is EC: EMC:DEC (mass ratioes 40.6:37.4:8.4)+1%VC+0.5%PS+0.904M LiPF6.Positive plate in embodiment 1 is pressed Normal manufacture craft is assembled into 18650 cylindrical batteries and test loop performance, test voltage 2.75V-4.2V, 0.5C charging, 1C Electric discharge, obtained cyclic curve is referring to Fig. 2, and as seen from the figure, 300 weeks capability retentions are 98.5%.
Embodiment 9
In the present embodiment, 18650 cylindrical batteries are made as normal process, design capacity 2.3Ah, and battery makes specific Step includes：Dispensing, homogenate, coating, tabletting, continuous rolling cut, winding, sheath body, electric welding, folding lug, laser welding, vacuum are dried Roasting, fluid injection, chemical conversion and aging.In the present embodiment, negative electrode active material is Delanium, and used in battery electrolyte composition is EC: EMC:DEC (mass ratioes 40.6:37.4:8.4)+1.5%VC+0.904M LiPF6.By the positive plate in embodiment 2 by normal system 18650 cylindrical batteries and test loop performance are assembled into as technique, test voltage 2.75V-4.2V, 0.5C charging, 1C electric discharges, are obtained The cyclic curve arrived is referring to Fig. 3, and as seen from the figure, 300 weeks capability retentions are 94.3%.
Embodiment 10
In addition to the positive plate in embodiment 1 to be replaced with to the positive plate in embodiment 3, other conditions are same as Example 6.
Embodiment 11
In addition to the positive plate in embodiment 1 to be replaced with to the positive plate in embodiment 3, other conditions are same as Example 8.
Embodiment 12
In addition to the positive plate in embodiment 1 to be replaced with to the positive plate in embodiment 4, other conditions are same as Example 6.
Embodiment 13
In addition to the positive plate in embodiment 1 to be replaced with to the positive plate in embodiment 4, other conditions are same as Example 8.
Embodiment 14
In addition to the positive plate in embodiment 1 to be replaced with to the positive plate in embodiment 5, other conditions are same as Example 6.
Embodiment 15
In addition to the positive plate in embodiment 1 to be replaced with to the positive plate and design capacity 1.6Ah in embodiment 5, other Part is same as Example 8.
The button half-cell electrochemical property test condition of embodiment provided by the invention is：Embodiment 6,7,9,10 and 12 Voltage window is 3-4.3V vs Li, and the voltage window of embodiment 14 is 2.5-3.7V vs Li, and electrochemical data is referring to table 1.
The button half-cell electrochemical data of table 1
Test event Initial charge capacity Initial charge capacity Coulombic efficiency first 1C discharge capacities 2C discharge capacities
Unit mAh/g mAh/g % mAh/g mAh/g
Embodiment 6 209.3 176.8 84 168.9 162.8
Embodiment 7 226.2 196.7 87 179.2 171.1
Embodiment 10 221.9 188.6 85 174.3 167.5
Embodiment 12 226.2 194.5 86 178.1 170.1
Embodiment 14 159.6 153.2 96 150.1 148.4
Applicant states that the present invention illustrates the method detailed of the present invention, but not office of the invention by above-described embodiment It is limited to above-mentioned method detailed, that is, does not mean that the present invention has to rely on above-mentioned method detailed and could implemented.Art Technical staff it will be clearly understood that any improvement in the present invention, equivalence replacement and auxiliary element to each raw material of product of the present invention Addition, selection of concrete mode etc., within the scope of all falling within protection scope of the present invention and disclosing.

Claims (10)

1. a kind of positive plate, it is characterised in that the positive plate includes：
Collector；
Active layer containing positive active material and benefit lithium composition, and active layer is formed on a current collector；
Surface coating has the conductive layer of 0.1nm-30nm thickness inert substances, and conductive layer is formed on active layer.
2. positive plate according to claim 1, it is characterised in that the benefit lithium composition is M/Li2O mixtures, Li2NiO2、 Li6Co1-xMnxO4、Li5Fe1-yMyO4Or Li5Fe1-z NzO4In any one or at least two combination, wherein, M Cu, One or more in Pb, Ni, Co, Mn, Ru, Mo or Fe, in N Mn, Al, Ti or Mg any one or at least two group Close, 0≤x≤0.3,0≤y≤1,0≤z≤0.5；
Preferably, the benefit lithium composition is Co/Li2O mixtures, Li6Co1-xMnxO4Or Li3Any one in N or at least two Combination, wherein 0.03≤x≤0.1；
Preferably, counted using the gross mass of the active layer as 100wt%, the positive active material and the total content for mending lithium composition For 90wt%-99wt%；
Preferably, counted using the positive active material gross mass as 100wt%, the content for mending lithium composition is 1wt%- 20wt%, preferably 1wt%-10wt%.
3. positive plate according to claim 1 or 2, it is characterised in that the ratio between surface density of the active layer and conductive layer For 40:1 to 60:1；
Preferably, the Surface coating has in the conductive layer of inert substance, and the thickness of the inert substance of cladding is 0.5-10nm；
Preferably, the inert substance is Al2O3、ZrO2、ZnO、TiO2、LiAlO2、SiO2、HfO2、B2O3、V2O5、Nb2O5、 InO2、SnO2、ITO、MgO、MoO3Or Ta2O5In any one or at least two combination, preferably MgO, Al2O3、ZrO2、 TiO2Or LiAlO2In any one or at least two combination.
4. according to the positive plate described in claim any one of 1-3, it is characterised in that in the active layer also comprising conductive agent and Binding agent；
Preferably, the conductive layer is made up of conductive agent, binding agent and inert substance；
Preferably, the conductive agent in the active layer and conductive layer independently selected from carbon black conductive agent SP, graphite agent S-O, In graphite agent KS-6, CNT CNTs, carbon fiber VGCF or acetylene black any one or at least two combination；
Preferably, the binding agent in the active layer and conductive layer is independently selected from Kynoar PVDF, polytetrafluoroethylene (PTFE) In PTFE, PVAC polyvinylalcohol, hydroxymethyl cellulose CMC or styrene butadiene rubber sbr any one or at least two combination.
5. positive plate according to claim 4, it is characterised in that in the active layer, positive active material, conductive agent, Binding agent and the mass ratio for mending lithium composition are (90-98):(1-5):(1-3):(1-10)；
Preferably, in the conductive layer, the mass ratio of binding agent and conductive agent is 20:80-40:60.
6. according to the positive plate described in claim any one of 1-5, it is characterised in that the positive plate includes：
Collector, active layer on a current collector is formed, and the Surface coating formed on active layer has 0.5-10nm thickness lazy The conductive layer of property material；
Wherein, in the active layer containing positive active material and account for positive active material gross mass 1-10wt% benefit lithium into Point；
The benefit lithium composition is Co/Li2O、Li6Co1-xMnxO4Or Li3In N any one or at least two combination, wherein 0.03≤x≤0.1。
7. the preparation method of the positive plate as described in claim any one of 1-6, it is characterised in that methods described includes following step Suddenly：
(1) using the raw material containing positive active material and benefit lithium composition, active layer is formed on a current collector；
(2) conductive layer is formed on active layer, and in the Surface coating 0.1nm-30nm thickness inert substances of conductive layer.
8. according to the method for claim 7, it is characterised in that the process of step (1) is：Will contain positive active material and The slurry for mending lithium component is applied on collector, is dried；
Preferably, the process that step (2) forms conductive layer on active layer is：Slurry comprising conductive agent and binding agent is coated with On the pole piece obtained to step (1), drying；
Preferably, step (2) the method that the Surface coating inert substance of conductive layer uses for：Physical vapour deposition (PVD) PVD, atom Layer deposition ALD or magnetron sputtering in any one or at least two combination.
9. the method according to claim 7 or 8, it is characterised in that methods described is wrapped after being additionally included in step (2) drying The step of roll-in is carried out before covering, preferably roll-in to compacted density is in 3g/cm3-4g/cm3。
10. a kind of lithium ion battery, including：Positive plate, negative plate, the barrier film being arranged between positive plate and negative plate, and Electrolyte, it is characterised in that the positive plate of the lithium ion battery is using the positive plate described in claim any one of 1-9；
Preferably, the electrolyte is the organic solvent of lithium salts.
CN201710941076.8A 2017-09-30 2017-09-30 A kind of positive plate, preparation method and include its lithium ion battery Pending CN107706351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710941076.8A CN107706351A (en) 2017-09-30 2017-09-30 A kind of positive plate, preparation method and include its lithium ion battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710941076.8A CN107706351A (en) 2017-09-30 2017-09-30 A kind of positive plate, preparation method and include its lithium ion battery

Publications (1)

Publication Number Publication Date
CN107706351A true CN107706351A (en) 2018-02-16

Family

ID=61184118

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710941076.8A Pending CN107706351A (en) 2017-09-30 2017-09-30 A kind of positive plate, preparation method and include its lithium ion battery

Country Status (1)

Country Link
CN (1) CN107706351A (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108899471A (en) * 2018-06-22 2018-11-27 安徽省力霸动力锂电池科技有限公司 A kind of positive plate and preparation method
CN108987672A (en) * 2018-08-16 2018-12-11 宁波瞬能科技有限公司 One kind is ultrafast to fill lithium ion battery anode and its preparation method and application
CN109728253A (en) * 2018-12-27 2019-05-07 江西星盈科技有限公司 Lithium ion battery and its positive plate and preparation method thereof
CN109742324A (en) * 2018-12-27 2019-05-10 江西星盈科技有限公司 Lithium ion battery and its positive plate and preparation method thereof
CN110459762A (en) * 2018-05-08 2019-11-15 中南大学 One kind mixing Mn ferrate-lithium, mends lithium anode material and its preparation and application
CN110518298A (en) * 2018-05-22 2019-11-29 中南大学 It is a kind of containing the benefit lithium anode material and its preparation of mixing Co ferrate-lithium and application
CN110600680A (en) * 2019-08-01 2019-12-20 东莞市易利特新能源有限公司 Positive electrode slurry, positive plate comprising positive electrode slurry and lithium ion battery
CN110635138A (en) * 2019-08-02 2019-12-31 河南平煤国能锂电有限公司 Lithium ion battery pole piece and manufacturing method thereof
CN110729451A (en) * 2018-07-17 2020-01-24 惠州比亚迪电池有限公司 Positive plate and preparation method thereof, lithium ion battery and vehicle
CN110993933A (en) * 2019-10-21 2020-04-10 肇庆遨优动力电池有限公司 Positive electrode material of lithium ion battery, preparation method and lithium ion battery
CN111162279A (en) * 2019-12-25 2020-05-15 复阳固态储能科技(溧阳)有限公司 High-nickel ternary positive electrode coated by multi-element conductor layer and lithium ion battery
CN111193019A (en) * 2020-01-13 2020-05-22 惠州亿纬锂能股份有限公司 Lithium supplement additive, preparation method thereof and lithium ion battery
CN111599994A (en) * 2019-02-20 2020-08-28 中信国安盟固利动力科技有限公司 Surface lithium-rich ternary material and preparation method thereof
CN111640932A (en) * 2020-06-03 2020-09-08 深圳市研一新材料有限责任公司 High-purity positive electrode lithium supplement additive, preparation method thereof and lithium ion battery
CN111916752A (en) * 2020-06-19 2020-11-10 欣旺达电动汽车电池有限公司 Positive pole piece, manufacturing method thereof and secondary battery
CN111952544A (en) * 2020-08-26 2020-11-17 北京工业大学 Lithium metal negative electrode and preparation method and application thereof
CN113113681A (en) * 2021-04-12 2021-07-13 中国科学院化学研究所 Composite sodium supplement additive and application thereof in sodium ion battery
CN113178567A (en) * 2021-03-29 2021-07-27 珠海冠宇电池股份有限公司 Positive electrode lithium supplement material and lithium ion battery comprising same
CN113646924A (en) * 2018-12-10 2021-11-12 株式会社Lg新能源 Positive electrode for secondary battery, method for producing same, and lithium secondary battery comprising same
CN113745459A (en) * 2021-08-31 2021-12-03 远景动力技术(江苏)有限公司 Positive electrode slurry and preparation method and application thereof
CN114649531A (en) * 2020-12-18 2022-06-21 中国石油化工股份有限公司 Modified electrode and preparation method and application thereof
CN114665063A (en) * 2022-03-28 2022-06-24 中国矿业大学(北京) Lithium-supplement composite membrane, lithium ion battery anode, lithium ion battery and preparation method
WO2022198660A1 (en) * 2021-03-26 2022-09-29 宁德新能源科技有限公司 Positive electrode lithium supplementing material, and positive electrode plate and electrochemical device including same
WO2023070768A1 (en) * 2021-10-25 2023-05-04 宁德新能源科技有限公司 Lithium-ion secondary battery, battery module, battery pack, and electric apparatus
EP4195314A4 (en) * 2021-06-03 2024-03-13 Lg Energy Solution Ltd Positive electrode for lithium secondary battery and lithium secondary battery comprising same
EP4109601A4 (en) * 2021-02-23 2024-04-03 Lg Energy Solution Ltd Sacrificial positive electrode material and lithium secondary battery comprising same
EP4195315A4 (en) * 2021-06-02 2024-04-10 Lg Energy Solution Ltd Cathode with improved structural stability for lithium secondary battery, method for manufacturing same, and lithium secondary battery comprising same

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103137976A (en) * 2011-11-25 2013-06-05 中国科学院物理研究所 Nanometer composite material and preparation method thereof, positive electrode material and battery
CN103199299A (en) * 2012-01-06 2013-07-10 王复民 Lithium ion battery anode protection layer and its manufacturing method
CN103401016A (en) * 2013-08-05 2013-11-20 宁德时代新能源科技有限公司 High energy density lithium ion battery
CN103855379A (en) * 2012-12-06 2014-06-11 索尼公司 Positive electrode active material and manufacturing method thereof, positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and power system
CN105406082A (en) * 2015-12-17 2016-03-16 佛山市南海区欣源电子有限公司 Composite pole piece of high-magnification lithium ion battery positive pole and preparation method of composite pole piece
CN105702961A (en) * 2014-11-27 2016-06-22 比亚迪股份有限公司 Positive pole material and lithium ion battery
CN105702913A (en) * 2014-11-27 2016-06-22 比亚迪股份有限公司 Positive electrode and preparation method therefor, and lithium secondary battery
CN106384838A (en) * 2016-11-03 2017-02-08 上海空间电源研究所 Atomic layer deposition modified lithium-ion battery and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103137976A (en) * 2011-11-25 2013-06-05 中国科学院物理研究所 Nanometer composite material and preparation method thereof, positive electrode material and battery
CN103199299A (en) * 2012-01-06 2013-07-10 王复民 Lithium ion battery anode protection layer and its manufacturing method
CN103855379A (en) * 2012-12-06 2014-06-11 索尼公司 Positive electrode active material and manufacturing method thereof, positive electrode, battery, battery pack, electronic device, electric vehicle, power storage device, and power system
CN103401016A (en) * 2013-08-05 2013-11-20 宁德时代新能源科技有限公司 High energy density lithium ion battery
CN105702961A (en) * 2014-11-27 2016-06-22 比亚迪股份有限公司 Positive pole material and lithium ion battery
CN105702913A (en) * 2014-11-27 2016-06-22 比亚迪股份有限公司 Positive electrode and preparation method therefor, and lithium secondary battery
CN105406082A (en) * 2015-12-17 2016-03-16 佛山市南海区欣源电子有限公司 Composite pole piece of high-magnification lithium ion battery positive pole and preparation method of composite pole piece
CN106384838A (en) * 2016-11-03 2017-02-08 上海空间电源研究所 Atomic layer deposition modified lithium-ion battery and preparation method thereof

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110459762B (en) * 2018-05-08 2021-03-26 中南大学 Mn-doped lithium ferrate, lithium supplement positive electrode material, and preparation and application thereof
CN110459762A (en) * 2018-05-08 2019-11-15 中南大学 One kind mixing Mn ferrate-lithium, mends lithium anode material and its preparation and application
CN110518298A (en) * 2018-05-22 2019-11-29 中南大学 It is a kind of containing the benefit lithium anode material and its preparation of mixing Co ferrate-lithium and application
CN110518298B (en) * 2018-05-22 2021-03-26 中南大学 Co-doped lithium ferrate-containing lithium supplement cathode material and preparation and application thereof
CN108899471A (en) * 2018-06-22 2018-11-27 安徽省力霸动力锂电池科技有限公司 A kind of positive plate and preparation method
CN110729451A (en) * 2018-07-17 2020-01-24 惠州比亚迪电池有限公司 Positive plate and preparation method thereof, lithium ion battery and vehicle
CN110729451B (en) * 2018-07-17 2021-12-10 惠州比亚迪电池有限公司 Positive plate and preparation method thereof, lithium ion battery and vehicle
CN108987672A (en) * 2018-08-16 2018-12-11 宁波瞬能科技有限公司 One kind is ultrafast to fill lithium ion battery anode and its preparation method and application
CN113646924A (en) * 2018-12-10 2021-11-12 株式会社Lg新能源 Positive electrode for secondary battery, method for producing same, and lithium secondary battery comprising same
CN109728253A (en) * 2018-12-27 2019-05-07 江西星盈科技有限公司 Lithium ion battery and its positive plate and preparation method thereof
CN109742324A (en) * 2018-12-27 2019-05-10 江西星盈科技有限公司 Lithium ion battery and its positive plate and preparation method thereof
CN111599994A (en) * 2019-02-20 2020-08-28 中信国安盟固利动力科技有限公司 Surface lithium-rich ternary material and preparation method thereof
CN111599994B (en) * 2019-02-20 2021-09-07 荣盛盟固利新能源科技股份有限公司 Surface lithium-rich ternary material and preparation method thereof
CN110600680A (en) * 2019-08-01 2019-12-20 东莞市易利特新能源有限公司 Positive electrode slurry, positive plate comprising positive electrode slurry and lithium ion battery
CN110635138A (en) * 2019-08-02 2019-12-31 河南平煤国能锂电有限公司 Lithium ion battery pole piece and manufacturing method thereof
CN110993933A (en) * 2019-10-21 2020-04-10 肇庆遨优动力电池有限公司 Positive electrode material of lithium ion battery, preparation method and lithium ion battery
CN111162279A (en) * 2019-12-25 2020-05-15 复阳固态储能科技(溧阳)有限公司 High-nickel ternary positive electrode coated by multi-element conductor layer and lithium ion battery
CN111193019A (en) * 2020-01-13 2020-05-22 惠州亿纬锂能股份有限公司 Lithium supplement additive, preparation method thereof and lithium ion battery
CN111640932A (en) * 2020-06-03 2020-09-08 深圳市研一新材料有限责任公司 High-purity positive electrode lithium supplement additive, preparation method thereof and lithium ion battery
CN111916752A (en) * 2020-06-19 2020-11-10 欣旺达电动汽车电池有限公司 Positive pole piece, manufacturing method thereof and secondary battery
CN111952544A (en) * 2020-08-26 2020-11-17 北京工业大学 Lithium metal negative electrode and preparation method and application thereof
CN114649531A (en) * 2020-12-18 2022-06-21 中国石油化工股份有限公司 Modified electrode and preparation method and application thereof
EP4109601A4 (en) * 2021-02-23 2024-04-03 Lg Energy Solution Ltd Sacrificial positive electrode material and lithium secondary battery comprising same
WO2022198660A1 (en) * 2021-03-26 2022-09-29 宁德新能源科技有限公司 Positive electrode lithium supplementing material, and positive electrode plate and electrochemical device including same
CN113178567A (en) * 2021-03-29 2021-07-27 珠海冠宇电池股份有限公司 Positive electrode lithium supplement material and lithium ion battery comprising same
CN113113681A (en) * 2021-04-12 2021-07-13 中国科学院化学研究所 Composite sodium supplement additive and application thereof in sodium ion battery
CN113113681B (en) * 2021-04-12 2022-05-10 中国科学院化学研究所 Composite sodium supplement additive and application thereof in sodium ion battery
EP4195315A4 (en) * 2021-06-02 2024-04-10 Lg Energy Solution Ltd Cathode with improved structural stability for lithium secondary battery, method for manufacturing same, and lithium secondary battery comprising same
EP4195314A4 (en) * 2021-06-03 2024-03-13 Lg Energy Solution Ltd Positive electrode for lithium secondary battery and lithium secondary battery comprising same
CN113745459A (en) * 2021-08-31 2021-12-03 远景动力技术(江苏)有限公司 Positive electrode slurry and preparation method and application thereof
WO2023070768A1 (en) * 2021-10-25 2023-05-04 宁德新能源科技有限公司 Lithium-ion secondary battery, battery module, battery pack, and electric apparatus
CN114665063A (en) * 2022-03-28 2022-06-24 中国矿业大学(北京) Lithium-supplement composite membrane, lithium ion battery anode, lithium ion battery and preparation method
CN114665063B (en) * 2022-03-28 2023-08-15 中国矿业大学(北京) Lithium supplementing composite film, lithium ion battery positive electrode, lithium ion battery and preparation method

Similar Documents

Publication Publication Date Title
CN107706351A (en) A kind of positive plate, preparation method and include its lithium ion battery
JP7027413B2 (en) Cathode slurry for lithium-ion batteries
CN101128949B (en) Secondary battery of improved lithium ion mobility and cell capacity
CN109390563B (en) Modified lithium iron phosphate positive electrode material, preparation method thereof, positive plate and lithium secondary battery
KR101984727B1 (en) Electrode and lithium secondary battery comprising the same
JP6128481B2 (en) Nonaqueous electrolyte secondary battery
CN108140830A (en) Lithium rechargeable battery and its manufacturing method
CN110890525B (en) Positive active material for lithium secondary battery and lithium secondary battery including the same
CN108899471A (en) A kind of positive plate and preparation method
JP2020004685A (en) All-solid battery
KR20130024595A (en) Lithium secondary battery comprising an oxygen scavenger
KR20140108380A (en) Secondary battery including silicon-metal alloy-based negative active material
WO2015015883A1 (en) Lithium secondary battery and electrolyte solution for lithium secondary batteries
Zhao et al. Effects of graphite on electrochemical performance of Sn/C composite thin film anodes
JP4752372B2 (en) Positive electrode active material, method for producing the same, and non-aqueous electrolyte secondary battery
KR20230150863A (en) Lithium-ion battery and power vehicles
CN100466343C (en) Anode active material compsns anode sheet and Li ion cell
KR20210042124A (en) Sulfur-based positive electrode active material for solid state batteries and its manufacturing method and application
CN107492660B (en) Positive electrode slurry, positive plate and lithium ion battery
CN114051666B (en) Method for manufacturing secondary battery
CN114759252A (en) Solid electrolyte, solid battery and preparation method thereof
KR102575407B1 (en) Positive active material for all solid secondary battery and manufacturing method thereof
CN113707864A (en) Composite film-coated positive electrode material, and preparation method and application thereof
JP2018113174A (en) Lithium secondary battery
CN106450201A (en) High-compacted high-capacity lithium ion battery

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20180216

RJ01 Rejection of invention patent application after publication