Polycrystalline metal oxides with enriched grain boundaries
US10843936B2 · kind B2 · utility
2Cited by
7References
17Claims
0Family size
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Key dates
| Filing date | May 19, 2020 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | May 19, 2040 |
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 with Al and Co. 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.