High-performance cathode catalyst for metal-air battery and preparation method thereof
US11658310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2021 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Jul 6, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2004/8689
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-performance positive electrode catalyst for a metal-air battery is disclosed, which is composed of transition metal nitride-transition metal oxide heterogeneous particles and a mesoporous carbon matrix. The nano heterogeneous particles, which are 10-50% based on the total mass of the catalyst, are dispersed in the mesoporous carbon matrix; and the oxide is 10-100% based on the heterogeneous particles. A preparation method of the catalyst includes: treating mesoporous carbon with a strong acid solution to obtain surface-functionalized mesoporous carbon; immersing the surface-functionalized mesoporous carbon in an aqueous solution of a transition metal salt, and stirring and washing; adding ammonia water and stirring to enable a confined complexation reaction; washing again, and vacuum drying; and calcining the product in an inert atmosphere or a vacuum condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.