Journal
CARBON LETTERS
Volume 33, Issue 1, Pages 1-16Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s42823-022-00414-x
Keywords
Graphite felt; Modification; Electrode material; Flow battery; Electrochemical activity
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This paper examines the surface modification methods and progress of graphite felt electrodes, and compares the effects of different modifications on the electrode performance. The results show that both surface functional group modification and surface catalytic modification can improve the performance of graphite felt electrodes.
Graphite felt is a felt-like porous material made of high-temperature carbonized polymers. It is widely used in electrode materials because of its good temperature resistance, corrosion resistance, large surface area and excellent electrical conductivity. In this paper, the surface functional group modification is of graphite felt electrodes (mainly nitrogen doping modification, nitrogen-sulfur or nitrogen-boron co-doping modification) and surface catalytic modification (metal/ion surface modification and metal oxide surface modification as Main). There are two main methods and research progresses to improve the performance of graphite felt electrodes, and the comprehensive performance of surface functional group-modified graphite felt electrodes and surface catalytically modified graphite felt electrodes are compared respectively. The results show that both surface functional group modification and surface catalytic modification can improve the comprehensive performance of graphite felt electrodes. In this paper, the future development direction of graphite felt activation modification is also prospected.
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