Nonaqueous electrolyte secondary cell
US9825299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2016 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Aug 2, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a nonaqueous electrolyte secondary cell in which heat generation is suppressed. The nonaqueous electrolyte secondary cell according to the invention has a positive electrode including positive electrode active material particles and a negative electrode including negative electrode active material particles. The negative electrode active material particles are carbon-black-adhered carbon-based negative electrode active material particles which are constituted by a carbon material having a graphite structure in at least part thereof and which have carbon black (CB) particles that have adhered to at least part of a surface portion. The positive electrode active material particles are of a hollow structure having a shell and a hollow portion. The average short diameter A of the CB particles in the carbon-black-adhered carbon-based negative electrode active material particles and an average inner diameter B of the hollow portions in the positive electrode active material particles fulfill the relationship: 1.2≦B/A≦260.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.