Bilayer electrolyte for a lithium battery
US8546022B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2013 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Mar 29, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a bilayer polymer electrolyte for a lithium battery. The electrolyte comprises the layers N and P, each composed of a solid solution of an Li salt in a polymer material, the Li salt being the same in both layers, the polymer material content being at least 60% by weight, and the lithium salt content being from 5 to 25% by weight. The polymer material of the layer P contains a solvating polymer and a nonsolvating polymer, the weight ratio of the two polymers being such that the solvating polymer forms a continuous network. The polymer material of the layer N is composed of a solvating polymer and optionally a nonsolvating polymer, the weight ratio of the two polymers being such that the solvating polymer forms a continuous network, and the nonsolvating polymer does not form a continuous network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.