Method for preparing vanadium battery electrolyte by using waste vanadium catalyst
US11261101B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2019 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Oct 7, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method for preparing a vanadium battery electrolyte by using a waste vanadium catalyst. The method includes step A: soaking a waste vanadium catalyst in an oxalic acid solution for 2-8 h, to generate a solution containing vanadyl oxalate; step B: cleaning the waste vanadium catalyst, and collecting the vanadyl oxalate solution; and step C: adding a polyacid ester into the vanadyl oxalate solution; and after full reaction, removing impurities by filtration, and concentrating the filtrate to obtain a vanadyl oxalate mother solution. The method for preparing a vanadium battery electrolyte by using a waste vanadium catalyst according to the present invention does not generate wastes which cause environmental pollution in the treatment process, and can make a solution in the waste vanadium catalyst treatment process generate the electrolyte for preparing a vanadium battery. The process is simple and the treatment cost is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.