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1. CN107834019 - Preparation method of battery slurry with high solid content

Amt China
Aktenzeichen/Anmeldenummer 201711061625.9
Anmeldedatum 02.11.2017
Veröffentlichungsnummer 107834019
Veröffentlichungsdatum 23.03.2018
Erteilungsnummer 107834019
Erteilungsdatum 17.03.2020
Veröffentlichungsart B
IPC
H01M 4/04
HElektrotechnik
01Grundlegende elektrische Bauteile
MVerfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
4Elektroden
02Elektroden, die aus einem aktiven Material bestehen oder ein solches enthalten
04Herstellungsverfahren allgemein
H01M 4/139
HElektrotechnik
01Grundlegende elektrische Bauteile
MVerfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
4Elektroden
02Elektroden, die aus einem aktiven Material bestehen oder ein solches enthalten
13Elektroden für Akkumulatoren mit nichtwässrigen Elektrolyten, z.B. für Lithium-Akkumulatoren; Herstellungsverfahren derselben
139Herstellungsverfahren
H01M 10/0525
HElektrotechnik
01Grundlegende elektrische Bauteile
MVerfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
10Sekundärelemente; Herstellung derselben
05Akkumulatoren mit nichtwässrigen Elektrolyten
052Li-Akkumulatoren
0525„Schaukelstuhl“ –Batterien, z.B. Batterien mit Lithium-Einschub oder –Interkalation in beiden Elektroden; Lithium-Ion-Batterien
CPC
H01M 4/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
04Processes of manufacture in general
H01M 4/139
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
139Processes of manufacture
H01M 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage
Anmelder SHENYANG GUOKE JINNENG NEW MATERIAL CO., LTD.
沈阳国科金能科技有限公司
Erfinder LIU ZHUANG
刘壮
WEN LEI
闻雷
WU MINJIE
吴敏杰
TANG CHANGPING
唐昌平
CAO HE
曹贺
YANG LIN
杨林
ZHANG FUSHENG
张福生
Vertreter 沈阳优普达知识产权代理事务所(特殊普通合伙) 21234
Titel
(EN) Preparation method of battery slurry with high solid content
(ZH) 一种高固含量的电池浆料制备方法
Zusammenfassung
(EN)
The invention belongs to the field of preparation of positive pole slurry of a lithium-ion battery, and particularly relates to a preparation method of battery slurry with high solid content. The preparation method comprises the following steps: 1) mixing a binder polyvinylidene difluoride resin with a solvent to prepare a meta-polyvinyl difluoride adhesive solution; 2) adding carbon-nanotube conductive slurry and a surface active agent into the meta-polyvinyl difluoride adhesive solution for mixing to obtain a carbon-nanotube mixed solution sealed by the binder; 3) adding a positive pole active substance into a solvent for soaking, thus obtaining soaking liquid of the positive pole active substance; 4) adding the carbon-nanotube mixed solution sealed by the binder into the fully-wetted positive pole active substance, and stirring for dispersion to obtain the positive pole slurry containing carbon nanotubes. The preparation method has the advantages that the dispersion uniformity of all the components in the positive pole slurry is good, and the dispersion uniformity of the carbon nanotubes is high; the surface active agent is added in the dispersion process, and the binder adoptedis a polymer, and in the process, the surface active agent and the polymer generate bidirectional action to disperse the carbon nanotubes in an auxiliary manner, so that the problem of agglomerationof the carbon nanotubes is avoided.

(ZH)
本发明属于锂离子电池正极浆料制备领域,具体为一种高固含量的电池浆料制备方法。该方法包括:1)将粘结剂聚偏二氟乙烯树脂与溶剂混合,制成偏聚二氟乙烯胶液;2)将碳纳米管导电浆料和表面活性剂加入到偏聚二氟乙烯胶液中混合,得到粘结剂封闭的碳纳米管混合溶液;3)将正极活性物质加入到溶剂中进行浸润,得到正极活性物质浸润液;4)将粘结剂封闭的碳纳米管混合溶液加入到充分润湿的正极活性物质中进行搅拌分散,得到含碳纳米管的正极浆料。本发明的正极浆料内各组分分散均匀性好,碳纳米管的分散均匀性高,分散过程添加表面活性剂,粘结剂采用聚合物这个过程表面活性剂和聚合物双向作用辅助分散碳纳米管,避免碳纳米管团聚的问题。