Secondary battery-use active material, secondary battery-use electrode, secondary battery, electric vehicle, and electronic apparatus
US10522820B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2015 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Mar 2, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A secondary battery includes a cathode; an anode (1) including a plurality of carbon particles and a plurality of non-carbon particles, (2) the carbon particles containing graphite, (3) the non-carbon particles containing a material including, as a constituent element, one or more of silicon (Si), tin (Sn), and germanium (Ge), and (4) a distribution of a first-order differential value of an integrated value Q of a relative particle amount with respect to a particle diameter D of the plurality of carbon particles having one or more discontinuities, where a horizontal axis and a vertical axis of the distribution indicate the particle diameter D (μm) and a first-order differential value dQ/dD, respectively; and an electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.