Polymer electrolyte having multi-layer structure, and all-solid battery comprising same
US10522872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Feb 23, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A polymer electrolyte for an all-solid battery, having a multi-layer structure is provided. An embodiment of the polymer electrolyte is a polymer electrolyte having a multi-layer structure, which includes a first polymer electrolyte layer and a second polymer electrolyte layer, where the EO:Li molar ratio of a poly(ethylene oxide)(PEO)-based polymer and a lithium salt is different between the first and second polymer electrolyte layers is provided. A solid polymer electrolyte of the present invention in the all-solid battery substantially reduces the interfacial resistance with lithium and the discharge overvoltage, resulting in a sufficient discharge capacity, which improves output characteristics and energy density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.