Polycrystalline metal oxides with enriched grain boundaries
US10501335B1 · kind B1 · utility
4Cited by
5References
19Claims
0Family size
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Key dates
| Filing date | Jan 17, 2019 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched Al. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.