江汉大学学报（自然科学版）2025，Vol.53Issue(3)：5-14,10.DOI:10.16389/j.cnki.cn42-1737/n.2025.03.001
硫酸氧化改性石墨毡在碱性全铁液流电池中负极性能的影响研究
Effect of Graphite Felt Modified by Sulfuric Acid Oxidation on Negative Electrode Performance of Alkaline All-iron Flow Battery
徐飞 1柳勇 2师逸飞 1李海峰 1余国贤1
作者信息
- 1. 江汉大学光电材料与技术学院,湖北 武汉 430056
- 2. 江汉大学环境与健康学院,湖北 武汉 430056
- 折叠
摘要
Abstract
The electrode with excellent electrochemical performance is one of the keys to the cycling stability of an alkaline all-iron flow battery.In this paper,the graphite felt electrode was modified with concentrated sulfuric acid oxidation.The effects of the modified electrode on the performance of an alkaline all-iron flow battery were studied by CV,EIS,and single-cell cycle tests.The physical and chemical structure of graphite felt modified with sulfuric acid oxidation was analyzed by scanning electron microscope(SEM),contact angle measuring instrument,Fourier transform infrared spectroscopy(FT-IR),and X-ray photoelectron spectroscopy(XPS).The results showed that the content of oxygen-containing functional groups,such as carboxyl groups,on the surface of the graphite felt electrode increased when the graphite felt electrode was modified with sulfuric acid oxidation,which improved the hydrophilicity of the graphite felt electrode.Meanwhile,many defective structures appeared on the surface,which increased the electrochemical reaction active site.In the charge and discharge process of single-cell tests,the DIPSO-Fe2+/DIPSO-Fe3+pair had better electrochemical activity when the modified electrode was used as the negative electrode,and the battery's capacity retention rate increased by 15%when the current density was 120 mA/cm2.关键词
碱性全铁液流电池/石墨毡/硫酸氧化改性/电化学性能Key words
alkaline all-iron flow battery/graphite felt/sulfuric acid oxidation modification/electrochemical performance分类
化学化工引用本文复制引用
徐飞,柳勇,师逸飞,李海峰,余国贤..硫酸氧化改性石墨毡在碱性全铁液流电池中负极性能的影响研究[J].江汉大学学报（自然科学版）,2025,53(3):5-14,10.
