Brownmillerite oxides for oxygen evolution catalyst
US10927465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/36
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An oxygen evolution catalyst of the formula: Sr2MCoO5 where M=Al, Ga wherein M is bonded with four oxygen atoms to form a tetrahedron. The catalyst is operated at a potential of less than 1.58 volts vs. RHE at a current density of 50 μA/cm2 for a pH of 7-13. The catalyst is operated at a potential of less than 1.55 volts vs. RHE at a current density of 50 μA/cm2 and a pH of 13. The oxygen evolution catalyst of the formula: Sr2GaCoO5 wherein the catalyst is operated at a potential of less than 1.53 volts vs. RHE at a current density of 50 μA/cm2 and a pH of 7. The oxygen evolution catalyst of formula: Sr2GaCoO5 wherein the catalyst maintains a current within 94% after 300 minutes at a potential of 1.645 volts vs. RHE wherein the current is greater than 1 milliamp and a pH of 7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.