Reversible bifunctional air electrode catalyst for rechargeable metal air battery and regenerative fuel cell
US10522842B2 · kind B2 · utility
1Cited by
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9Claims
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Key dates
| Filing date | Nov 3, 2014 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Nov 11, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A catalyst is provided for the two electron reduction of oxygen. The catalyst can be reversible or near-reversible. The catalyst comprises a gold and a cobalt coordination complex, i.e., N,N′-bis(salicylidene)ethylene-diaminocobalt (II) (cobalt salen) or a derivative thereof. The cobalt coordination complex can be polymerized to form a film, for example, via electropolymerization, to cover a gold surface. Also provided are metal-air batteries, fuel cells, and air electrodes that comprise the catalyst, as well as methods of using the catalyst, for example, to reduce oxygen and/or produce hydrogen peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.