Battery of lithium-ion type with a cathode of varying porosity, and a corresponding method
US9887432B2 · kind B2 · utility
1Cited by
0References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2013 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Jul 30, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin layer lithium-ion type battery comprising, on a substrate (20, 30), a cathode current collector layer (22, 36) and an active portion constituted by a stack of a cathode layer (23, 35) made of material suitable for inserting lithium ions, an electrolyte layer (24, 34), and an anode layer (25, 33), wherein the cathode layer presents, across its thickness, porosity that varies between its interface with the cathode current collector layer and its interface with the electrolyte layer, the variation in the porosity being non-zero so as to improve cohesion at both interfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.