Title:
VANADIUM-CHROMIUM ELECTROLYTE, PREPARATION METHOD THEREFOR, AND FLOW BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2024/056104
Kind Code:
A1
Abstract:
A vanadium-chromium electrolyte, a preparation method therefor, and a flow battery comprising same. The vanadium-chromium electrolyte comprises an active substance and a free acid; the free acid is ionized and thereupon serves as a proton conductor, and the active substance at least comprises vanadium ions and chromium ions. The preparation method for the vanadium-chromium electrolyte comprises the following steps: dissolving a vanadium compound by using said free acid, filtering, and obtaining a mixed solution of free acid and vanadium ions; carrying out electrolytic reduction on vanadium to an average valence state of 3.5-4; adding a chromium compound, stirring and dissolving, and filtering; and adding water and an auxiliary reagent, adjusting the concentration, and obtaining the vanadium-chromium electrolyte. The vanadium-chromium electrolyte has the advantages of high vanadium utilization, high energy density, and low watt-hour costs; when same is used in a flow battery, same can improve the energy density of a solution, and reduces the cost of the battery.
More Like This:
Inventors:
SONG MINGMING (CN)
WANG DELU (CN)
CENG FANWU (CN)
GAO XINLIANG (CN)
CHEN YANBO (CN)
HAO YUE (CN)
WANG DELU (CN)
CENG FANWU (CN)
GAO XINLIANG (CN)
CHEN YANBO (CN)
HAO YUE (CN)
Application Number:
PCT/CN2023/127036
Publication Date:
March 21, 2024
Filing Date:
October 27, 2023
Export Citation:
Assignee:
DALIAN RONGKE POWER GROUP CO LTD (CN)
International Classes:
H01M8/18; H01M8/04186; H01M8/24
Foreign References:
| CN102790234A | 2012-11-21 | |||
| CN108199068A | 2018-06-22 | |||
| CN101651219A | 2010-02-17 | |||
| CN103466704A | 2013-12-25 | |||
| CN106997958A | 2017-08-01 | |||
| JP2011210696A | 2011-10-20 | |||
| CN115642278A | 2023-01-24 |
Attorney, Agent or Firm:
PURPLEVINE INTELLECTUAL PROPERTY (SHENZHEN) CO., LTD. (CN)
Download PDF: