Title:
GRAPHENE DISPERSION, POSITIVE ELECTRODE PASTE, AND LITHIUM ION BATTERY POSITIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2021/095651
Kind Code:
A1
Abstract:
A graphene dispersion containing graphene and polyvinyl alcohol, wherein the average thickness of the graphene is 0.3 to 10 nm, the polyvinyl alcohol saponification rate is 70 to 100%, and the graphene dispersion contains 10 to 300 weight parts of the polyvinyl alcohol per 100 weight parts of the graphene. Provided are a graphene dispersion and a positive electrode paste that allow graphene to be mixed uniformly when being mixed with a positive electrode active substance, thereby providing a lithium ion battery positive electrode having improved battery life.
Inventors:
KATO TOMOHIRO (JP)
TAKEUCHI TAKASHI (JP)
KATASE FUMIYA (JP)
TAMAKI EIICHIRO (JP)
TAKEUCHI TAKASHI (JP)
KATASE FUMIYA (JP)
TAMAKI EIICHIRO (JP)
Application Number:
PCT/JP2020/041519
Publication Date:
May 20, 2021
Filing Date:
November 06, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C01B32/194; C01B32/198; H01M4/13; H01M4/131; H01M4/139; H01M4/1391; H01M4/62
Domestic Patent References:
| WO2017047523A1 | 2017-03-23 |
Foreign References:
| JP2018520494A | 2018-07-26 | |||
| JP2019512442A | 2019-05-16 | |||
| JP2015078289A | 2015-04-23 |
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