Coordination regulation type high-stability aqueous organic flow battery and preparation method thereof

By employing a coordination-regulated preparation method, the problems of stability, ion selectivity, and electrode catalytic activity of aqueous organic flow batteries in thermal power energy storage frequency regulation have been solved. This has resulted in an aqueous organic flow battery with high stability, high response speed, and economy, suitable for thermal power energy storage frequency regulation and other energy storage scenarios.

CN121726461BActive Publication Date: 2026-05-26XIAN THERMAL POWER RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN THERMAL POWER RES INST CO LTD
Filing Date
2026-02-26
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing aqueous organic flow batteries suffer from poor electrolyte stability, insufficient ion selectivity, low electrode catalytic activity, and narrow adaptability in thermal power energy storage frequency regulation scenarios, making it difficult to meet the millisecond-level response requirements.

Method used

A coordination-regulated preparation method is adopted, in which a stable coordination system is formed by organic active substances and multidentate ligands. Combined with modified membrane and electrode doping technology, a stable structure is constructed to improve electrolyte stability, membrane ion selectivity and electrode catalytic activity.

Benefits of technology

It achieves long-term stability of the electrolyte, improves ion transport efficiency and electrode catalytic activity, reduces internal resistance, has wide adaptability and good economic efficiency, and is suitable for frequency regulation of thermal power energy storage and other energy storage scenarios.

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Abstract

This disclosure provides a coordination-regulated, high-stability aqueous organic flow battery adapted for frequency regulation in thermal power energy storage and its preparation method. The preparation method includes: adding deoxygenated deionized water to organic anode active material and anode coordination regulator, introducing an inert gas, stirring, and adding a pH adjuster to adjust the solution pH, followed by stirring to form an anode electrolyte; adding deoxygenated deionized water to organic cathode active material and cathode coordination regulator, introducing an inert gas, stirring, and adding a supporting electrolyte, followed by stirring to form a cathode electrolyte; immersing an ion exchange membrane in a modification solution and stirring to obtain a modified membrane; immersing the modified membrane in an alkali metal solution to activate ion exchange sites; immersing the electrode in a doping solution for dispersion treatment and drying to obtain a doped electrode; using this doped electrode as the working electrode, a platinum sheet as the counter electrode, and a saturated calomel electrode as the reference electrode, and performing cyclic voltammetric activation in H2SO4 solution.
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