CN109585760A - A kind of flexibility lithium ceramic cell and preparation method thereof - Google Patents
A kind of flexibility lithium ceramic cell and preparation method thereof Download PDFInfo
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- CN109585760A CN109585760A CN201811507208.7A CN201811507208A CN109585760A CN 109585760 A CN109585760 A CN 109585760A CN 201811507208 A CN201811507208 A CN 201811507208A CN 109585760 A CN109585760 A CN 109585760A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
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- 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
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- 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
- H01M10/058—Construction or manufacture
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention proposes a kind of flexible lithium ceramic cells and preparation method thereof, flexible lithium ceramic cell includes doping vario-property graphene negative electrode material, the composite positive pole of Co-Mn-Ni containing lithium and composite ceramics solid electrolyte, wherein, doping vario-property graphene negative electrode material includes consisting of ingredient: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium includes consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, composite ceramics solid electrolyte includes consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive, the present invention is reasonably matched by the constitutive material to lithium ceramic cell, battery obtained has excellent flexible space, effectively increase the charged holding of battery Ability, the internal resistance of cell is small, and battery capacity is big, and specific energy can reach 580Wh/kg, and comprehensive quality significantly improves.
Description
Technical field
The present invention relates to battery production preparation technical fields, and in particular to a kind of flexibility lithium ceramic cell and its preparation side
Method.
Background technique
Lithium ion battery mainly assembles by the pole piece for being coated with positive and negative anodes material with battery diaphragm, wherein battery diaphragm
Major function is that the positive/negative plate in battery is isolated, and prevents pole piece from directly contacting generation short circuit, while in battery diaphragm
There is the micro channel of tortuous perforation in inside, the ion in battery is passed freely through in micropore.
Membrane properties determine the internal resistance and interfacial structure of battery, and then determine battery capacity, security performance, charge and discharge
The characteristics such as density and cycle performance, therefore diaphragm need to meet following characteristic: (1) good chemical stability, be resistant to various organic
Solvent；(2) good mechanical performance, tensile strength is high, and puncture strength is high；(3) good thermal stability, with compatibility of electrolyte
Good, imbibition rate is high.
The diaphragm for being full of entire lithium battery manufacturing at present is still polyolefin material, whether dry method or wet
Method, simple tension or biaxial tension are all difficult to change the feature of its heat resistance difference.This not only gives the safety of consumer battery
Performance brings hidden danger, also limits its application in terms of dynamic lithium battery." 863 " plan solid oxide fuel cell
(SOFC) project opens ceramics membrane preparation technology by the long-term development to Novel middle-temperature solid oxide ceramic membrane cell
The production applied to SOFC is opened up, the high temperature (1000-900 DEG C) of usual SOFC is opened up and is prolonged to middle thermophase (700-500 DEG C).China
The Novel middle-temperature ceramic membrane fuel cells that inoranic membrane research institute, University of Science and Technology has succeeded in developing are a kind of using ceramic membrane as electricity
Solve the fuel cell of matter.After battery component filming, the internal resistance of battery is reduced, the output of available power is improved, is not required to
It wants to realize medium temperature under conditions of high temperature, operation temperature drops to 700-500 DEG C.This new fuel cell inherits high temperature
The advantages of SOFC, reduces costs simultaneously.Such ceramic membrane fuel cells have broad application prospects.
Summary of the invention
In view of the above problems, the invention proposes a kind of flexible lithium ceramic cells and preparation method thereof, by right
The constitutive material of lithium ceramic cell is reasonably matched, and battery obtained has excellent flexible space, effectively increases electricity
The retention of charge in pond, the internal resistance of cell is small, and battery capacity is big, and specific energy can reach 580Wh/kg, and comprehensive quality significantly improves.
In order to achieve the above purpose, the following technical solution is employed by the present invention:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
Preferably, each component mass percentage in doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 5-10%,
Transition metal borate 10-30% graphene surplus.
It preferably, further include the titanium dioxide of 0-15% in doping vario-property graphene negative electrode material.
Preferably, any one or more composition of transition metal borate in Ni, Co, Zn.
Preferably, each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 8-
15%, Kynoar 5-8%, polyethylene glycol oxide 5-10%, metal oxide surplus.
Preferably, metal oxide is by Li2O and any one or more composition group in Ni, Co, Y, Mg, Mn
At, wherein Li2O accounts for the 50-55% of metal oxide integral molar quantity.
Preferably, each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 5-
12%, Aqueous Polyurethane Adhesives 5-12%, additive 3-8%, nanometer sulfide particle surplus, the composite ceramics solid state electrolysis
40-60 μm of plasma membrane thickness.
Preferably, any one or more composition of nanometer sulfide particle in B, Zr, Y, Bi, additive include
Dispersing agent, the solvent of mass ratio 1:3-5, wherein dispersing agent is selected from AES or AEO series of surfactants, and solvent is selected from but unlimited
In one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or numerous compositions.
Preferably, flexible lithium ceramic cell, the preparation method is as follows:
1) electrolyte raw material is placed in ball milling in ball mill, composite ceramics solid state electrolysis is then made using high temperature solid-state method
Matter diaphragm, it is spare；
2) each raw material of positive electrode, negative electrode material is respectively placed in solvent and is sufficiently mixed slurrying, be then coated on metal foil
Positive and negative plate is made on piece, drying, roll-in, cutting, electric welding process；
3) positive and negative plate and electrolyte membrance are used into winding process processing procedure core, draws positive and negative tab, seals, set after fluid injection
In in battery case to obtain the final product.
Due to using above-mentioned technical solution, the beneficial effects of the present invention are: the present invention passes through the group to lithium ceramic cell
It is reasonably matched at raw material, battery obtained has excellent flexible space, effectively increases the charged holding energy of battery
Power, the internal resistance of cell is small, and battery capacity is big, and specific energy can reach 580Wh/kg, and less than 1.1%, comprehensive quality significantly mentions self-discharge rate
It is high.Caking property is good between battery material positive and negative anodes and diaphragm produced by the present invention, combines compared to traditional adhesive gluing, also has
Excellent chemical combined effect, network channel stability is strong between component, and electric conductivity is strong, suitable for the pore size of Ion penetration
In, for porosity up to 60%, quick charge is strong, half an hour charging capacity up to normal capacity 90% or more.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described.Based on the embodiment of the present invention, the common skill in this field
Art personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Embodiment 1:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
It is specific:
Each component mass percentage in the doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 5%, transition metal boron
Hydrochlorate 20% further includes 10% titanium dioxide, and graphene surplus, transition metal borate is Ni, Co composition.
Each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 15%, polyvinylidene fluoride
Alkene 5%, polyethylene glycol oxide 10%, metal oxide surplus, metal oxide is by Li2O and Ni, Co, Y composition composition, wherein
Li2O accounts for the 50% of metal oxide integral molar quantity.
Each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 12%, aqueous poly- ammonia
Ester adhesive 10%, additive 8%, nanometer sulfide particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte are received
Rice sulfide grain is B, Zr, Y, Bi composition, and additive includes the dispersing agent of mass ratio 1:3, solvent, and wherein dispersing agent is selected from
AES or AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or more
Kind composition.
Flexible lithium ceramic cell, the preparation method is as follows:
1) electrolyte raw material is placed in ball milling in ball mill, then uses high temperature solid-state method (heat treatment temperature 680-730
DEG C, specifically can 440-450 DEG C of heating and thermal insulation 2-3h of elder generation, be then warming up to 680-730 DEG C of heat treatment 10-12h again, it is cold with furnace
But composite ceramics solid electrolyte diaphragm) is made, it is spare；
2) each raw material of positive electrode, negative electrode material is respectively placed in solvent and is sufficiently mixed slurrying, be then coated on metal foil
Positive and negative plate is made on piece, drying, roll-in, cutting, electric welding process；
3) positive and negative plate and electrolyte membrance are used into winding process processing procedure core, draws positive and negative tab, seals, set after fluid injection
In in battery case to obtain the final product.
Embodiment 2:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
It is specific:
Each component mass percentage in the doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 5%, transition metal boron
Hydrochlorate 10% further includes 10% titanium dioxide, and graphene surplus, transition metal borate is Ni, Co, Zn composition.
Each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 15%, polyvinylidene fluoride
Alkene 8%, polyethylene glycol oxide 10%, metal oxide surplus, metal oxide is by Li2O and selected from Ni, Co, Mn composition composition,
Wherein, Li2O accounts for the 50-55% of metal oxide integral molar quantity.
Each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 12%, aqueous poly- ammonia
Ester adhesive 12%, additive 8%, nanometer sulfide particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte are received
Rice sulfide grain is selected from B, Bi composition, and additive includes the dispersing agent of mass ratio 1:5, solvent, and wherein dispersing agent is selected from AES
Or AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or a variety of groups
Close object.
Flexible lithium ceramic cell, the preparation method is the same as that of Example 1.
Embodiment 3:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
It is specific:
Each component mass percentage in the doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 5%, transition metal boron
Hydrochlorate 20% further includes 5% titanium dioxide, and graphene surplus, transition metal borate is Ni.
Each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 15%, polyvinylidene fluoride
Alkene 5%, polyethylene glycol oxide 10%, metal oxide surplus, metal oxide is by Li2O and selected from Ni, Co, Y composition form,
In, Li2O accounts for the 50-55% of metal oxide integral molar quantity.
Each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 10%, aqueous poly- ammonia
Ester adhesive 5%, additive 5%, nanometer sulfide particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte, nanometer
Sulfide grain is selected from B, Y composition, and additive includes the dispersing agent of mass ratio 1:3, solvent, wherein dispersing agent be selected from AES or
AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or multiple combinations
Object.
Flexible lithium ceramic cell, the preparation method is the same as that of Example 1.
Embodiment 4:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
It is specific:
Each component mass percentage in the doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 10%, transition metal boron
Hydrochlorate 10% further includes 15% titanium dioxide, and graphene surplus, transition metal borate is Ni, Co, Zn composition.
Each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 8%, polyvinylidene fluoride
Alkene 8%, polyethylene glycol oxide 5%, metal oxide surplus, metal oxide is by Li2O and selected from Ni, Co, Y composition form,
In, Li2O accounts for the 50-55% of metal oxide integral molar quantity.
Each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 5%, aqueous poly- ammonia
Ester adhesive 12%, additive 8%, nanometer sulfide particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte are received
Rice sulfide grain is selected from B, Y, Bi composition, and additive includes the dispersing agent of mass ratio 1:5, solvent, and wherein dispersing agent is selected from
AES or AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or more
Kind composition.
Flexible lithium ceramic cell, the preparation method is the same as that of Example 1.
Embodiment 5:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
It is specific:
Each component mass percentage in the doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 5%, transition metal boron
Hydrochlorate 30% further includes 14.5% titanium dioxide, 0.5% trifluoromethyl sulfonic acid lithium, graphene surplus, the choosing of transition metal borate
From Ni, Co composition.
Each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 8%, polyvinylidene fluoride
Alkene 5%, polyethylene glycol oxide 8%, metal oxide surplus, metal oxide is by Li2O and selected from Ni, Co composition form, wherein
Li2O accounts for the 50-55% of metal oxide integral molar quantity.
Each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 10%, aqueous poly- ammonia
Ester adhesive 8%, additive 5%, nanometer sulfide particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte, nanometer
Sulfide grain is selected from B, Bi composition, and additive includes the dispersing agent of mass ratio 1:5, solvent, wherein dispersing agent be selected from AES or
AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or multiple combinations
Object.
Flexible lithium ceramic cell, the preparation method is the same as that of Example 1.
Embodiment 6:
A kind of flexibility lithium ceramic cell, the flexibility lithium ceramic cell includes doping vario-property graphene negative electrode material, Co- containing lithium
Mn-Ni composite positive pole and composite ceramics solid electrolyte, wherein the doping vario-property graphene negative electrode material include with
Lower constituent: graphene, silicon nitride fiber, transition metal borate, the composite positive pole of Co-Mn-Ni containing lithium include
Consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics solid electrolyte packet
Include consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, additive.
It is specific:
Each component mass percentage in the doping vario-property graphene negative electrode material are as follows: silicon nitride fiber 10%, transition metal boron
Hydrochlorate 10%, further includes 14.4% titanium dioxide, 0.6% trifluoromethyl sulfonic acid lithium, graphene surplus, and transition metal borate is
Ni, Co, Zn composition.
Each component mass percentage in the composite positive pole of Co-Mn-Ni containing lithium are as follows: acetylene black 8%, polyvinylidene fluoride
Alkene 7.5%, polyethylene glycol oxide 5%, biomass carbon 0.5%, metal oxide surplus, metal oxide is by Li2O and be selected from Ni, Co, Y
Composition composition, wherein Li2O accounts for the 50-55% of metal oxide integral molar quantity.
Each component mass percentage in the composite ceramics solid electrolyte are as follows: carboxymethyl cellulose 5%, aqueous poly- ammonia
Ester adhesive 12%, additive 8%, nanometer sulfide particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte are received
Rice sulfide grain is selected from B, Y, Bi composition, and additive includes the dispersing agent of mass ratio 1:5, solvent, and wherein dispersing agent is selected from
AES or AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or more
Kind composition.
Flexible lithium ceramic cell, the preparation method is the same as that of Example 1.
Flexible lithium ceramic cell produced by the present invention is tested for the property, data are as follows:
| 1C charging capacity, mAh | 200 weeks cycle battery capacity retention ratios, % | Voltage drop after placing for 28 days, % | Capacity restoration after placing for 28 days, % | Specific energy, Wh/kg | |
| Embodiment 1 | 14020 | 98.24 | 0.43 | 98.50 | 581.4 |
| Embodiment 2 | 14115 | 98.36 | 0.41 | 98.76 | 582.3 |
| Embodiment 3 | 13958 | 98.05 | 0.42 | 97.89 | 578.1 |
| Embodiment 4 | 13974 | 97.85 | 0.46 | 98.24 | 576.4 |
| Embodiment 5 | 14065 | 97.98 | 0.45 | 98.33 | 577.3 |
| Embodiment 6 | 14082 | 98.23 | 0.38 | 98.45 | 578.3 |
By above table data it is found that the lithium ceramic motor that the present invention is worth has excellent electric property, capacitance is big
Retentivity is strong, and stability is high, and comprehensive quality is good, is worthy to be popularized.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of flexibility lithium ceramic cell, it is characterised in that: the flexibility lithium ceramic cell includes doping vario-property graphene cathode
Material, the composite positive pole of Co-Mn-Ni containing lithium and composite ceramics solid electrolyte, wherein the doping vario-property graphene is negative
Pole material includes consisting of ingredient: graphene, silicon nitride fiber, transition metal borate, the Co-Mn-Ni containing lithium are compound
Positive electrode includes consisting of ingredient: metal oxide, acetylene black, Kynoar, polyethylene glycol oxide, the composite ceramics
Solid electrolyte includes consisting of ingredient: nanometer sulfide particle, carboxymethyl cellulose, Aqueous Polyurethane Adhesives, addition
Agent.
2. flexibility lithium ceramic cell according to claim 1, it is characterised in that: the doping vario-property graphene negative electrode material
Middle each component mass percentage are as follows: silicon nitride fiber 5-10%, transition metal borate 10-30%, graphene surplus.
3. flexibility lithium ceramic cell according to claim 2, it is characterised in that: the doping vario-property graphene negative electrode material
In further include 0-15% titanium dioxide.
4. flexibility lithium ceramic cell according to claim 3, it is characterised in that: transition metal borate is selected from Ni, Co, Zn
In any one or more composition.
5. flexibility lithium ceramic cell according to claim 1, it is characterised in that: the anode composite of Co-Mn-Ni containing the lithium material
Each component mass percentage in material are as follows: acetylene black 8-15%, Kynoar 5-8%, polyethylene glycol oxide 5-10%, metal oxidation
Object surplus.
6. flexibility lithium ceramic cell according to claim 5, it is characterised in that: metal oxide is by Li2O and selected from Ni,
Any one or more composition composition in Co, Y, Mg, Mn, wherein Li2O accounts for the 50-55% of metal oxide integral molar quantity.
7. flexibility lithium ceramic cell according to claim 1, it is characterised in that: each in the composite ceramics solid electrolyte
Constituent mass percentage composition are as follows: carboxymethyl cellulose 5-12%, Aqueous Polyurethane Adhesives 5-12%, additive 3-8%, nano-sulfur
Compound particle surplus, 40-60 μm of film thickness of the composite ceramics solid electrolyte.
8. flexibility lithium ceramic cell according to claim 7, it is characterised in that: nanometer sulfide particle be selected from B, Zr, Y,
Any one or more composition in Bi, additive include the dispersing agent of mass ratio 1:3-5, solvent, and wherein dispersing agent is selected from
AES or AEO series of surfactants, solvent are selected from but not limited to one of methyl ethyl ketone, ethyl alcohol, isopropanol, n-butanol or more
Kind composition.
9. flexibility lithium ceramic cell according to claim 1-8, which is characterized in that the preparation method is as follows:
Electrolyte raw material is placed in ball milling in ball mill, composite ceramics solid electrolyte is then made using high temperature solid-state method
Diaphragm, it is spare；
Each raw material of positive electrode, negative electrode material is respectively placed in solvent and is sufficiently mixed slurrying, is then coated on metal foil
On, positive and negative plate is made in drying, roll-in, cutting, electric welding process；
Positive and negative plate and electrolyte membrance are used into winding process processing procedure core, positive and negative tab is drawn, seals, be placed in after fluid injection
In battery case to obtain the final product.
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| CN111900315A (en) * | 2020-08-04 | 2020-11-06 | 中国科学院物理研究所 | Ceramic diaphragm with double-sided coating material coating and preparation method and application thereof |
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