Characteristics of Carbon Paper as Electrode for Vanadium Redox Flow Battery

doi:10.3724/SP.J.1077.2009.00798

Abstract

Abstract: The carbon paper (CP) heat-treated at 435℃ for 10h were characterized by FTIR spectroscopy and BET, and their electrochemical behaviors were investigated by cyclic voltammograms, impedance spectroscopy and charge-discharge techniques. The results show that -COOH functional groups form after heattreated for 10h and specific surface area increases significantly. The vanadium redox battery with modified CP electrode exhibits excellent performance at current density of 50mA/cm². The average current efficiency reaches 95% and average voltage efficiency reaches 89%. The improvement of electrochemical performance for the electrode is ascribed to the -COOH group and the special surface of CP.

Key words: vanadium redox battery, carbon paper, heat-treatment

CLC Number:

TM912

LIU Su-Qin,SHI Xiao-Hu,HUANG Ke-Long,LI Xiao-Gang. Characteristics of Carbon Paper as Electrode for Vanadium Redox Flow Battery[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00798.

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Characteristics of Carbon Paper as Electrode for Vanadium Redox Flow Battery

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