Negative electrode material for sodium secondary battery and method for producing same, negative electrode for sodium secondary batter, and sodium secondary battery
US9553308B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 1, 2012 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Jul 26, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Problem. Provided is a negative electrode material for a sodium secondary battery and its manufacturing method, and a negative electrode for a sodium secondary battery, and a sodium secondary battery, wherein the negative electrode material can have excellent cycle characteristics while maintaining high discharge capacity. Solution. A negative electrode material for a sodium secondary battery according to the present invention includes sulfide or sulfide composite body containing sulfur and antimony, and as necessary further includes the following component(s) of (i): (i) at least one or more element(s) selected from a group consisting of Sn, As, Bi, Ge, Ga, Pb, and C, wherein when a component(s) of (i) is included, the ratio of each of the above described components is sulfur: 10 to 70 mol %, antimony: 10 to 70 mol %, and (i): 3 to 60 mol %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.