Systems and methods of long-duration energy storage and regeneration of energy-bearing redox pairs
US11043686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2018 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Mar 11, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Described herein are systems and methods of storing and delivering electrical using hydrogen at low-cost and for long-durations. The systems and methods use energy-bearing redox pairs that electrochemically bear energy through decoupled hydrogen and oxygen consumption and/or evolution reactions, which are typically associated with fuel cells. Each species of the energy-bearing redox pair is associated with a standard electrode potential within a water electrolysis voltage window for the electrolyte solution. Electrical energy delivery, hydrogen generation, electrolyte regeneration, or combinations thereof can be performed by logically or physically separated unit operations in a continuous manner, batch manner, or semi-batch manner facilitated by the energy-bearing redox pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.