Polymer binder for lithium battery and method of manufacturing
US10840502B2 · kind B2 · utility
1Cited by
26References
25Claims
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Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Apr 11, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is an anode active material layer for a lithium battery. The anode active material layer comprises multiple anode active material particles and an optional conductive additive that are bonded together by a binder comprising a high-elasticity polymer having a recoverable or elastic tensile strain no less than 10% when measured without an additive or reinforcement in the polymer and a lithium ion conductivity no less than 10−5 S/cm at room temperature. The anode active material preferably has a specific lithium storage capacity greater than 372 mAh/g (e.g. Si, Ge, Sn, SnO2, Co3O4, etc.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.