Aqueous binder for lithium-sulfur secondary battery, preparation method thereof and lithium-sulfur secondary battery comprising the same
US10840514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2019 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Mar 31, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to an aqueous binder for a lithium-sulfur secondary battery, a method for preparing the same, and a lithium-sulfur secondary battery including the same. More particularly, it is possible to obtain an aqueous binder (PEI/PVP/CA, PPC) by adding citric acid to a mixed solution of polyethylene imine with polyvinyl pyrrolidone, and to apply the aqueous binder to a lithium-sulfur secondary battery having high discharge capacity, Coulombic efficiency and stable life characteristics through the improvement of adhesion capability even at a sulfur cathode with high energy density, inhibition of a shuttle reaction and inhibition of metal current collector corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.