pH-universal aqueous rechargeable hydrogen batteries
US12191502B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 2, 2019 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jun 26, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Described are aqueous rechargeable hydrogen batteries operating in the full pH range (e.g., pH: −1 to 15) with potential for electrical grid storage. The pH-universal hydrogen batteries operate with different redox chemistry on the cathodes and reversible hydrogen evolution/oxidation reactions (HER/HOR) on the anode. The reactions can be catalyzed by a highly active ruthenium-based electrocatalyst. The ruthenium-based catalysts exhibit comparable specific activity and superior long-term stability of HER/HOR to that of state-of-the-art Pt/C electrocatalyst in the full pH range. New chemistries for aqueous rechargeable hydrogen batteries are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.