Li-ion battery cathode materials with over-discharge protection
US10305104B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2011 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | May 3, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium-ion battery having over-discharge protection includes an anode comprising at least an electrochemically active anode material, said anode having an anode irreversible capacity loss during a first charge of the lithium-ion battery; and a cathode comprising at least an electrochemically active cathode material characterized by the formula: xLi2MnO3.(1−x)LiMnaNibCocO2, where 0<x<1 and a+b+c=1, and x, a, b, and c are selected to provide a cathode irreversible capacity loss during a first charge of the lithium-ion battery that is greater than or equal to the anode irreversible capacity loss, and wherein the cathode possesses a voltage step less than about 2 V versus Li.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.