Carbon felt electrode modification method of all-iron flow battery

• Main Authors: WU WENQI, XING YANGYANG, MENG XIN, ZHANG QIAN, LIU DONGYING, LI BO
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a method for modifying a carbon felt electrode of an all-iron flow battery. The method comprises the following steps: 1) putting a carbon felt into a tubular furnace for firing; 2) preparing a Fe2 (SO4) 3 methanol solution and a dimethylimidazole methanol solution; 3) putting the carbon felt subjected to heat treatment into a dimethyl imidazole methanol solution, and then pouring a Fe2 (SO4) 3 methanol solution into the solution; 4) stirring the mixed solution and the carbon felt, taking out and drying; 5) putting the dried carbon felt into a tubular furnace, and firing in a nitrogen atmosphere; and 6) taking out the fired carbon felt, firstly cleaning with hydrochloric acid, then cleaning with deionized water, and drying after cleaning to obtain the modified carbon felt electrode. The scheme is used for modifying the carbon felt electrode of the all-iron flow battery, the hydrophilicity and electrochemical activity of the carbon felt electrode can be improved by soaking and stirring in