US Patent:
20160308220, Oct 20, 2016
Inventors:
- Knoxville TN, US
Thomas ZAWODZINSKI - Knoxville TN, US
Shane FOISTER - Knoxville TN, US
International Classification:
H01M 4/90
H01M 4/88
H01M 12/02
H01M 4/86
H01M 12/06
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.