Use of quaternary ammonium salt-type anthraquinone-based active material and salt cavern organic aqueous redox flow battery
US11677091B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2020 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Aug 20, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to use of a quaternary ammonium salt-type anthraquinone-based active material, and a salt cavern organic aqueous redox flow battery. The quaternary ammonium salt-type anthraquinone-based active material is used as a negative active material in a salt cavern battery, and a quaternary ammonium salt group is introduced, which can improve the solubility of anthraquinone in a neutral sodium chloride solution, thereby increasing the energy density of the battery. Also, the material has a relatively good stability, without the need for charging and discharging under the protection of an inert gas environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.