Anode active material for lithium secondary battery, manufacturing method there-for, anode for lithium secondary battery comprising same, and lithium secondary battery
US10205169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2015 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Jun 27, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for rechargeable lithium secondary batteries, a method of preparing the same, and a rechargeable lithium secondary battery including the same are disclosed. The negative active material includes a core including a lithium titanium oxide of Formula 1, and a coating layer positioned on a surface of the core and including an acid anhydride physisorbed onto the core, and thus can be useful in inhibiting battery side reactions and gas generation and improving battery performance since moisture formed during a redox reaction is effectively absorbed into a surface of the negative active material. LixTiyO4 [Formula 1]In Formula 1, x and y are as defined in the detailed description.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.