Title:
ALKALINE NEGATIVE ELECTRODE ELECTROLYTE AND ALKALINE ZINC-IRON FLOW BATTERY ASSEMBLED BY SAME
Document Type and Number:
WIPO Patent Application WO/2023/082842
Kind Code:
A1
Abstract:
The present application relates to the technical field of flow batteries, and discloses an alkaline negative electrode electrolyte and an alkaline zinc-iron flow battery assembled by same. An alkaline negative electrode electrolyte, wherein the negative electrode electrolyte comprising zinc ions, a complexing agent, and alkali. The complexing agent is selected from at least one of ethylenediamine tetraacetic acid, ethylene glycol diethyl ether diamine tetraacetic acid, cyclohexane tetraacetic acid, and ethylenediamine tetrapropionic acid; a molar ratio of the zinc ions to the complexing agent is 1:1; and a molar ratio of the complexing agent to the alkali is 1:(3-4). The zinc ions in the negative electrode electrolyte are in a complex state form, the negative electrode electrolyte is used as a negative electrode electrolyte, and the alkaline zinc-iron flow battery is obtained by means of assembly, so that the problem of electrolyte migration in the alkaline zinc-iron flow battery is solved, and the battery cycle stability is improved, moreover, the low-temperature performance of the battery is improved, and a working temperature range of the alkaline zinc-iron flow battery is widened.
Inventors:
LI XIANFENG (CN)
XU PENGCHENG (CN)
YUAN ZHIZHANG (CN)
XU PENGCHENG (CN)
YUAN ZHIZHANG (CN)
Application Number:
PCT/CN2022/119948
Publication Date:
May 19, 2023
Filing Date:
September 20, 2022
Export Citation:
Assignee:
DALIAN INST CHEM & PHYSICS CAS (CN)
International Classes:
H01M8/04186; H01M8/18
Domestic Patent References:
| WO2021121642A1 | 2021-06-24 | |||
| WO2017132346A1 | 2017-08-03 |
Foreign References:
| CN110311162A | 2019-10-08 | |||
| CN112086694A | 2020-12-15 | |||
| CN113140839A | 2021-07-20 | |||
| CN111933912A | 2020-11-13 | |||
| CN109509901A | 2019-03-22 |
Attorney, Agent or Firm:
PERIODIC LAW FIRM (CN)
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