Energy storage device and energy storage apparatus
US9991563B2 · kind B2 · utility
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2References
6Claims
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Key dates
| Filing date | May 26, 2016 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | May 26, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An energy storage device includes a positive electrode and a negative electrode. The negative electrode includes graphite and non-graphitizable carbon, and a D50 particle size of the graphite at which a cumulative volume in a particle size distribution of a particle size reaches 50% is 2 μm or more. A ratio of a mass of the non-graphitizable carbon to a total amount of a mass of the graphite and a mass of the non-graphitizable carbon is 5% by mass or more and 45% by mass or less and a ratio of the D50 particle size of the graphite to a D50 particle size of the non-graphitizable carbon is 1.02 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.