CN105244509A - Metal conductive agent and lithium ion battery using conductive agent - Google Patents

Metal conductive agent and lithium ion battery using conductive agent Download PDF

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Publication number
CN105244509A
CN105244509A CN201510791812.7A CN201510791812A CN105244509A CN 105244509 A CN105244509 A CN 105244509A CN 201510791812 A CN201510791812 A CN 201510791812A CN 105244509 A CN105244509 A CN 105244509A
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China
Prior art keywords
conductive agent
negative pole
positive
metal
ion battery
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Pending
Application number
CN201510791812.7A
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Chinese (zh)
Inventor
张越超
张敏
李兴旺
高秀玲
王立仕
王驰伟
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Tianjin EV Energies Co Ltd
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Tianjin EV Energies Co Ltd
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Priority to CN201510791812.7A priority Critical patent/CN105244509A/en
Publication of CN105244509A publication Critical patent/CN105244509A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • H01M4/626—Metals
    • 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 relates to a metal conductive agent and a lithium ion battery using the conductive agent. The metal conductive agent is made of metal which has stable properties under a negative pole potential, such as silver, copper, nickel, stainless steel, nickel-plated silver or nickel-plated copper; and the metal conductive agent has a powder shape or spring shape or hollow semispherical shape or other hollow shapes. In a negative pole, the hollow metal conductive agent is used; by controlling the compaction density of a pole piece, the conductive agent keeps a certain hollow structure after being ground; when a silicon-containing negative pole is charged and expanded, the metal conductive agent is deformed along the expansion direction of negative pole particles to form a certain space, so that the staggering and stripping of the negative pole particles are inhibited to a certain extent; and meanwhile, the contact area of metal and the negative pole particles keeps unchanged or is relatively large when the negative pole particles are extruded and enough conductivity is kept, so that the cycling service life is maintained.

Description

A kind of metal conductive agent and use the lithium ion battery of this kind of conductive agent
Technical field
The invention belongs to field of lithium ion battery, be particularly a kind ofly applied to the metal conductive agent of lithium ion battery and use the battery of this conductive agent.
Background technology
Lithium and pasc reaction can obtain multiple alloy phase, make silicon have higher theoretical capacity (4200mAh/g) and certain cycle performance, can as a kind of desirable lithium ion battery negative material.But the alloy that silicon and lithium are formed in charge and discharge process will cause the volumetric expansion of 300%, cause the efflorescence of active material and peel off, thus cause the rapid decay of capacity.
For silicon materials, the way that current people propose to solve volumetric expansion problem mainly contains two kinds:
One adopts oxide as presoma, and in charge and discharge process, first reduction decomposition reaction occurs oxide, forms the active metal of nanoscale, and is highly dispersed at amorphous Li 2in O medium, thus inhibit change in volume, effectively improve cyclicity.The shortcoming of the method: effectively can reduce change in volume when the ratio of oxygen is higher, but due to reduction decomposition reacted many and make irreversible capacity loss larger; Still change in volume cannot be suppressed when the ratio of oxygen is low.
Another kind adopts superfine alloy and active composite alloy system.The absolute volume change of each superfine alloy particle in charge and discharge process is less, is conducive to the structural stability of material.The shortcoming of the method: violent reunion occurs super-fine material in cyclic process, is not enough to make the performance improvement of battery to practical.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of metal conductive agent is provided; And battery cathode containing this conductive agent is provided; And the lithium ion battery using above-mentioned negative pole is provided, this lithium ion battery has excellent cycle performance and lower cubical expansivity.
The technical solution used in the present invention is:
A metal conductive agent for used as negative electrode of Li-ion battery, the material of this metal conductive agent is: the metal of stable in properties under negative pole current potential, as silver-plated in silver, copper, nickel, stainless steel, nickel or nickel copper facing etc.; Pattern is Powdered or spring-like or hollow hemisphere shape or other hollows patterns.
Preferably, the D50 of described metal conductive agent is 0.1 ~ 5um.
Present invention also offers the battery cathode containing this metal conductive agent, this battery cathode comprises negative electrode active material, cathode conductive agent, negative electrode binder, negative pole carrier, negative pole solvent, described cathode conductive agent is above-mentioned metal conductive agent, or the mixture of above-mentioned metal conductive agent and conventional conductive agent.
Further, described conventional conductive agent is one or more the composition in SuperP, acetylene black, KS-6, carbon fiber (VGCF), carbon nano-tube (CNTs).
Further, described metal conductive agent accounts for 1% ~ 50% of negative pole gross mass.
Further, described cathode conductive agent is the mixture of above-mentioned metal conductive agent and conventional conductive agent; Described metal conductive agent account for active material, cathode conductive agent, binding agent three gross mass 5% ~ 25%; Conventional conductive agent accounts for 0 ~ 5% of three's gross mass.More preferably, described metal conductive agent is copper.
Further, cathode conductive agent needs to make dispersion liquid, and dispersant is polyvinylpyrrolidone (PVP) or lauryl sodium sulfate (SDS).
In the present invention, negative pole expands, the method for raising pole piece conductivity can be applied on the negative pole of any material to adopt the conductive agent of hollow to cushion.But because the compound charging expansion rate of silicon or silicon is all very large, for the compound of silicon or silicon as using the conductive agent of hollow to expand to cushion negative pole in the negative pole of negative electrode active material, to improve pole piece conductivity effect significantly good.
Particularly,
Described negative electrode active material is: one or more the mixture in the metallic compound of the oxide of silicon, silicon, the nonmetallic compound of silicon, silicon, silicon/carbon complex, silica/carbon complex or silicon/metal composite;
Described negative electrode binder is: Kynoar (PVDF), or the combination of butadiene-styrene rubber (SBR) and sodium carboxymethylcellulose (CMC) or polyacrylic acid (PAA); Negative electrode binder account for negative electrode active material, cathode conductive agent, negative electrode binder three gross mass 2% ~ 5%;
Described negative pole solvent is: 1-METHYLPYRROLIDONE (NMP) or deionized water;
Described negative pole carrier is: Copper Foil or barrier film.The thickness of Copper Foil is 5 ~ 20um.Barrier film is polyalkene diaphragm or nonwoven fabrics barrier film, and thickness is 7-40um, and porosity is 25%-65%;
The manufacture method of this negative pole, comprises the steps: negative electrode active material, cathode conductive agent, negative electrode binder, negative pole solvent fully to mix, makes slurry; Slurry is coated on negative pole carrier, after oven dry, makes negative plate.
Present invention also offers a kind of lithium ion battery, this lithium ion battery comprises positive pole, negative pole, barrier film, electrolyte, and described negative pole is above-mentioned negative pole.
Particularly, in this lithium ion battery,
Positive pole
Positive electrode active materials: lithium-transition metal composite oxide; Quality accounts for the 90%-97% of positive electrode active materials, positive conductive agent, positive electrode binder three gross mass; Further, described lithium-transition metal composite oxide is LiMxOy, as LiMn 2o 4, LiNiO 2, LiCoO 2, or LiMxPO 4, as LiFePO 4, LiVPO 4; The combination of M normally one or more transition metal.
Positive conductive agent: one or both in carbon black or electrically conductive graphite; Positive conductive agent account for positive electrode active materials, positive conductive agent, positive electrode binder three gross mass 1 ~ 5%;
Positive electrode binder: Kynoar (PVDF); Positive electrode binder account for positive electrode active materials, positive conductive agent, positive electrode binder three gross mass 1% ~ 5%;
Positive pole solvent: 1-METHYLPYRROLIDONE (NMP);
Positive pole carrier: aluminium foil
Positive pole manufacture method: positive electrode active materials, positive conductive agent, positive electrode binder, positive pole solvent are fully mixed, makes slurry; Slurry is coated on positive pole carrier, after oven dry, makes positive plate.
Negative pole
Negative pole described above.
Barrier film
Polyalkene diaphragm or nonwoven fabrics barrier film; Or at the coating barrier film that above-mentioned membrane surface coated ceramic, PVDF class binding agent, PAA class binding agent obtain.Membrane thicknesses is 7-40um, and porosity is 25%-65%;
Electrolyte
Electrolyte solvent: described electrolyte solvent is two or more combination in ethylene carbonate (EC), propene carbonate (PC), butylene, ɑ-butyrolactone, ɑ-valerolactone, dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), diethoxyethane, 1,3-dioxolane;
Electrolyte lithium salts: LiPF 6, LiBF 4, LiClO 4, LiBOB, LiN (CF 3sO 2) 2, Li (CF 3sO 2) 3in one or more combination; Preferably, concentration is 0.5-1.5M.
Film for additive: one or more the combination in vinylene carbonate (VC), propylene sulfite (PS), fluorinated ethylene carbonate (FEC), succinonitrile (AN), also can not add.
This lithium ion battery manufacture method, to comprise the steps: positive/negative plate and barrier film, to reel or the mode of lamination makes battery core, to be packaged in aluminum plastic film.Under vacuum, to inject the electrolyte in aluminum plastic film and to seal.Normal temperature leaves standstill 6 ~ 24 hours so that electrolyte infiltrates pole piece and barrier film.Change into.Bleed.
The beneficial effect that the present invention has:
The present invention uses the metal conductive agent of hollow in negative pole, by controlling pole piece compaction density, makes conductive agent still keep certain hollow structure after rolling; When expanding containing silicium cathode charging, there is deformation along the direction that negative pole particle expands in metal conductive agent, vacates certain space, thus to a certain degree inhibit the dislocation of negative pole particle and peel off; The extruding of negative pole particle simultaneously makes the contact area of metal and negative pole particle remain unchanged or more, maintains enough conductivity, thus is maintained cycle life.
Accompanying drawing explanation
Fig. 1 is the pattern of metal conductive agent spring-like;
Fig. 2 is the pattern of metal conductive agent hollow hemisphere shape.
Fig. 3 is the cyclic curve of embodiment 1,2 and each scheme of comparative example 1,2.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but do not limit protection scope of the present invention.
Embodiment 1
The preparation of negative pole: 0.035kgCMC is dissolved in deionized water and makes glue.0.23kg spring-like copper (D50=1.0um), 0.012kgCNT are made dispersion liquid respectively.By CMC glue, copper powder dispersion liquid, CNT dispersion liquid, 2.00kg silica/graphite composite material, SBR glue (SBR solid masses 0.035kg), appropriate amount of deionized water stirs, and makes cathode size.Slurry is coated on Copper Foil, dries, roll, cut into 53 × 550cm size, and at one end weld nickel lug.Negative pole porosity is controlled 23.0% ± 0.5% when rolling.
The preparation of positive pole: 0.062gPVDF is dissolved in NMP and makes glue.PVDF glue, 4.00kg cobalt acid lithium, 0.062kgSP, appropriate NMP are stirred, makes anode sizing agent.Slurry is coated on aluminium foil, dries, roll, cut into 51.5 × 548mm size, and at one end welding of aluminum lug.
The preparation of electrolyte: the volume ratio mixing of EC, PC, EMC being pressed 35:5:60, adds LiPF by the lithium salt of 1.0M 6, add the VC of electrolyte 1% mass fraction and the FEC of 2% mass fraction respectively, stir and fully make electrolyte.
Battery makes: the positive pole prepared, negative pole and polyolefine isolating film are wound into battery core, are encapsulated in aluminium plastic packaging bag, through vacuum bakeout.Fluid injection, vacuum seal.Battery normal temperature after fluid injection is left standstill 24 hours, then carries out heating pressurization and change into.Change into rear to battery vacuum degassing.
Embodiment 2
The preparation of negative pole: 0.039kgCMC is dissolved in deionized water and makes glue.0.50kg spring-like copper (D50=1.0um), 0.012kgCNT are made dispersion liquid respectively.By CMC glue, copper powder dispersion liquid, CNT dispersion liquid, 2.00kg silica/graphite composite material, SBR glue (SBR solid masses 0.039kg), appropriate amount of deionized water stirs, and makes cathode size.Slurry is coated on nonwoven fabrics barrier film, dries, roll, cut into 53 × 550cm size, and at one end stick nickel lug.Negative pole porosity is controlled 23.0% ± 0.5% when rolling.
Positive pole, electrolyte, battery Making programme are identical with embodiment 1.
Embodiment 3
The preparation of negative pole: 0.035kgCMC is dissolved in deionized water and makes glue.0.25kg spring-like copper (D50=1.0um) is made dispersion liquid.By CMC glue, copper powder dispersion liquid, 2.00kg silica/graphite composite material, SBR glue (SBR solid masses 0.039kg), appropriate amount of deionized water stirs, and makes cathode size.Slurry is coated on Copper Foil, dries, roll, cut into 53 × 550cm size, and at one end stick nickel lug.Negative pole porosity is controlled 23.0% ± 0.5% when rolling.
Positive pole, electrolyte, battery Making programme are identical with embodiment 1.
Embodiment 4
The preparation of negative pole: 0.035kgCMC is dissolved in deionized water and makes glue.0.25kg hollow hemisphere shape copper (D50=1.0um) is made dispersion liquid.By CMC glue, copper powder dispersion liquid, CNT dispersion liquid, 2.00kg silica/graphite composite material, SBR glue (SBR solid masses 0.039kg), appropriate amount of deionized water stirs, and makes cathode size.Slurry is coated on Copper Foil, dries, roll, cut into 53 × 550cm size, and at one end stick nickel lug.Negative pole porosity is controlled 23.0% ± 0.5% when rolling.
Positive pole, electrolyte, battery Making programme are identical with embodiment 1.
Comparative example 1
The preparation of negative pole:
0.031kgCMC is dissolved in deionized water and makes glue.0.012kgCNT is made dispersion liquid.By CMC glue, CNT dispersion liquid, 2.00kg silica/graphite composite material, SBR glue (SBR solid masses 0.031kg), appropriate amount of deionized water stirs, and makes cathode size.Slurry is coated on Copper Foil, dries, roll, cut into 53 × 500cm size, and at one end weld nickel lug.Negative pole porosity is controlled 23.0% ± 0.5% when rolling.
Positive pole, electrolyte, battery Making programme are identical with embodiment 1.
Comparative example 2
The preparation of negative pole:
0.031kgCMC is dissolved in deionized water and makes glue.0.012kgCNT is made dispersion liquid.By CMC glue, CNT dispersion liquid, 2.00kg graphite, SBR glue (SBR solid masses 0.031kg), appropriate amount of deionized water stirs, and makes cathode size.Slurry is coated on Copper Foil, dries, roll, cut into 53 × 550cm size, and at one end weld nickel lug.Negative pole porosity is controlled 23.0% ± 0.5% when rolling.
Positive pole, electrolyte, battery Making programme are identical with embodiment 1.
(3) test data
The each scheme implementation result of table 1
Remarks: the calculating that negative pole expands is to roll rear negative pole thickness for benchmark; The calculating that battery core expands is to change into rear battery core thickness for benchmark
From implementation result, the battery of use metal conductive agent, silica/graphite composite material has a clear superiority in energy density, cycle life, circulation thickness swelling.Embodiment 1 is better than comparative example 1, may be embodiment 1 in the process of discharge and recharge, the copper of spring-like expands along negative pole particle and there occurs deformation, expands vacateed space to particle, and therefore the full electric expansion of pole piece, battery core thickness swelling are all less; The extruding of negative pole particle simultaneously makes the contact area of copper and negative pole particle remain unchanged or more, and maintain enough conductivity, therefore cycle performance is better.Embodiment 2 is lower than the negative pole initial bubble rate of embodiment 1, and illustrate that the copper due to spring-like is more, vacateed more space to negative pole particle, embodiment 2 saves Copper Foil, and therefore energy density is higher than embodiment 1; And embodiment 2 circulate after expansion rate high, cycle performance is slightly poor, supposition is because use barrier film to do negative pole carrier, and conductivity is slightly poor, more by the polarize side reaction that causes of negative pole, and therefore circulation is expanded comparatively greatly, cycle performance is slightly poor.

Claims (7)

1. a metal conductive agent for used as negative electrode of Li-ion battery, is characterized in that: the material of this metal conductive agent is: the metal of stable in properties under negative pole current potential, as silver-plated in silver, copper, nickel, stainless steel, nickel or nickel copper facing etc.; Pattern is Powdered or spring-like or hollow hemisphere shape or other hollows patterns.
2. the metal conductive agent of a kind of used as negative electrode of Li-ion battery according to claim 1, is characterized in that: the D50 of described metal conductive agent is 0.1 ~ 5um.
3. the battery cathode of a lithium ion battery, it is characterized in that: this battery cathode comprises negative electrode active material, cathode conductive agent, negative electrode binder, negative pole carrier, negative pole solvent, described cathode conductive agent is the metal conductive agent described in claim 1 or 2, or the mixture of metal conductive agent described in claim 1 or 2 and conventional conductive agent.
4. the battery cathode of a kind of lithium ion battery according to claim 3, is characterized in that: described cathode conductive agent is the mixture of metal conductive agent and conventional conductive agent; Described metal conductive agent account for active material, cathode conductive agent, binding agent three gross mass 5% ~ 25%; Conventional conductive agent accounts for 0 ~ 5% of three's gross mass.
5. the battery cathode of a kind of lithium ion battery according to claim 3, is characterized in that:
Described negative electrode active material is: one or more the mixture in the metallic compound of the oxide of silicon, silicon, the nonmetallic compound of silicon, silicon, silicon/carbon complex, silica/carbon complex or silicon/metal composite;
Described negative electrode binder is: Kynoar (PVDF), or the combination of butadiene-styrene rubber (SBR) and sodium carboxymethylcellulose (CMC) or polyacrylic acid (PAA); Negative electrode binder account for negative electrode active material, cathode conductive agent, negative electrode binder three gross mass 2% ~ 5%;
Described negative pole solvent is: 1-METHYLPYRROLIDONE (NMP) or deionized water;
Described negative pole carrier is: Copper Foil or barrier film.The thickness of Copper Foil is 5 ~ 20um.Barrier film is polyalkene diaphragm or nonwoven fabrics barrier film, and thickness is 7-40um, and porosity is 25%-65%.
6. a lithium ion battery, is characterized in that: this lithium ion battery comprises positive pole, negative pole, barrier film, electrolyte, and described negative pole is the negative pole described in any one of claim 3-5.
7. a kind of lithium ion battery according to claim 6, is characterized in that: in this lithium ion battery,
Positive pole
Positive electrode active materials: lithium-transition metal composite oxide; Quality accounts for the 90%-97% of positive electrode active materials, positive conductive agent, positive electrode binder three gross mass; Further, described lithium-transition metal composite oxide is LiMxOy, as LiMn 2o 4, LiNiO 2, LiCoO 2, or LiMxPO 4, as LiFePO 4, LiVPO 4; The combination of M normally one or more transition metal;
Positive conductive agent: one or both in carbon black or electrically conductive graphite; Positive conductive agent account for positive electrode active materials, positive conductive agent, positive electrode binder three gross mass 1 ~ 5%;
Positive electrode binder: Kynoar (PVDF); Positive electrode binder account for positive electrode active materials, positive conductive agent, positive electrode binder three gross mass 1% ~ 5%;
Positive pole solvent: 1-METHYLPYRROLIDONE (NMP);
Positive pole carrier: aluminium foil
Positive pole manufacture method: positive electrode active materials, positive conductive agent, positive electrode binder, positive pole solvent are fully mixed, makes slurry; Slurry is coated on positive pole carrier, after oven dry, makes positive plate.
Negative pole
Negative pole described in any one of claim 3-5;
Barrier film
Polyalkene diaphragm or nonwoven fabrics barrier film; Or at the coating barrier film that above-mentioned membrane surface coated ceramic, PVDF class binding agent, PAA class binding agent obtain.Membrane thicknesses is 7-40um, and porosity is 25%-65%;
Electrolyte
Electrolyte solvent: described electrolyte solvent is two or more combination in ethylene carbonate (EC), propene carbonate (PC), butylene, ɑ-butyrolactone, ɑ-valerolactone, dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC), diethoxyethane, 1,3-dioxolane;
Electrolyte lithium salts: LiPF 6, LiBF 4, LiClO 4, LiBOB, LiN (CF 3sO 2) 2, Li (CF 3sO 2) 3in one or more combination; Preferably, concentration is 0.5-1.5M;
Film for additive: one or more the combination in vinylene carbonate (VC), propylene sulfite (PS), fluorinated ethylene carbonate (FEC), succinonitrile (AN), also can not add.
CN201510791812.7A 2015-11-17 2015-11-17 Metal conductive agent and lithium ion battery using conductive agent Pending CN105244509A (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN106058259A (en) * 2016-01-21 2016-10-26 万向A二三***有限公司 High-specific-capacity silicon-based negative electrode composite binder and preparation method for negative plate containing same
CN107195896A (en) * 2017-04-06 2017-09-22 中国计量大学 A kind of preparation method that silicium cathode material is synthesized by carrier low temperature of conducting metal nano particle
CN108428930A (en) * 2018-04-09 2018-08-21 惠州市赛能电池有限公司 A kind of method for making electric core of the negative plate containing silicon substrate
CN108963264A (en) * 2018-08-02 2018-12-07 佛山腾鲤新能源科技有限公司 A kind of preparation method of lithium ion battery conductive agent
CN109686980A (en) * 2018-12-15 2019-04-26 华南理工大学 A kind of lithium ion battery with high energy density
CN112652740A (en) * 2019-10-10 2021-04-13 中国石油化工股份有限公司 Electrode material composition and preparation method and application thereof

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JP2014127239A (en) * 2012-12-25 2014-07-07 Nissan Motor Co Ltd Electrode composition, electrode and battery
CN104332608A (en) * 2014-08-19 2015-02-04 新乡远东电子科技有限公司 Lithium ion battery silicon composite negative electrode material and preparation method thereof
CN104471761A (en) * 2012-05-07 2015-03-25 古河电气工业株式会社 Negative electrode for nonaqueous electrolyte rechargeable battery and nonaqueous electrolyte rechargeable battery using same

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Publication number Priority date Publication date Assignee Title
CN104471761A (en) * 2012-05-07 2015-03-25 古河电气工业株式会社 Negative electrode for nonaqueous electrolyte rechargeable battery and nonaqueous electrolyte rechargeable battery using same
JP2014127239A (en) * 2012-12-25 2014-07-07 Nissan Motor Co Ltd Electrode composition, electrode and battery
CN104332608A (en) * 2014-08-19 2015-02-04 新乡远东电子科技有限公司 Lithium ion battery silicon composite negative electrode material and preparation method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106058259A (en) * 2016-01-21 2016-10-26 万向A二三***有限公司 High-specific-capacity silicon-based negative electrode composite binder and preparation method for negative plate containing same
CN106058259B (en) * 2016-01-21 2018-07-27 万向一二三股份公司 A kind of preparation method of height ratio capacity silicon-based anode compound binding agent and the negative plate containing the binder
CN107195896A (en) * 2017-04-06 2017-09-22 中国计量大学 A kind of preparation method that silicium cathode material is synthesized by carrier low temperature of conducting metal nano particle
CN107195896B (en) * 2017-04-06 2019-09-17 中国计量大学 A kind of preparation method synthesizing silicium cathode material using conductive metal nano particle as carrier low temperature
CN108428930A (en) * 2018-04-09 2018-08-21 惠州市赛能电池有限公司 A kind of method for making electric core of the negative plate containing silicon substrate
CN108963264A (en) * 2018-08-02 2018-12-07 佛山腾鲤新能源科技有限公司 A kind of preparation method of lithium ion battery conductive agent
CN109686980A (en) * 2018-12-15 2019-04-26 华南理工大学 A kind of lithium ion battery with high energy density
CN112652740A (en) * 2019-10-10 2021-04-13 中国石油化工股份有限公司 Electrode material composition and preparation method and application thereof
CN112652740B (en) * 2019-10-10 2022-10-21 中国石油化工股份有限公司 Electrode material composition and preparation method and application thereof

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Application publication date: 20160113