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 heattreated 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.
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, 2009
, 24(4)
: 798
-802
.
DOI: 10.3724/SP.J.1077.2009.00798
［1］Sum E,Skyllas-Kazacos M. J.Power Sources,1985,15(2/3):179-190.
［2］Sum E, Rychcik M, Skyllas-Kazacos M.J.Power Sources,1985, 16(2):85-95.
［3］Fabjan Ch, Garche J, Harrer B, et al. Electrochemical Acta, 2001,47(5): 825-831.
［4］Joerissen Ludwig, Garche Juergen, Fabjan Ch,et al. J.Power Sources, 2004, 127(1/2):98-104.
［5］Li Xu, Horita Kiyoshi.Carbon, 2000, 38(1):133-138.
［6］Santiago M, Frank Stüber, Agustí Fortuny, et al. Carbon, 2005, 43(10):2134-2145.
［7］Rychcik M,Skyllas-Kazaocs M. J.Power Sources, 1987, 19(1):45-54.
［8］黄可龙,伍秋美,刘素琴,等.电源技术,2004,28(2):91-93.
［9］伍秋美,黄可龙,桑商斌,等. 电源技术,2005,29(7):456-458.
［10］王曙中,黄乃科,李灵忻.中山大学学报(自然科学版),2003, 42(S1):57-60.
［11］王 虹,汤人望,施南飞.产业用纺织品,2007,(5):27-31.
［12］罗志平, 唐豪林,木士春,等.电池工业, 2005, 10(3):137-139.
［13］曹楚南,张鉴清.电化学阻抗谱导论.北京: 科学出版社,2002: 84-95.
［14］Sun B, Skyllas-Kazacos M. Electrochim Acta, 1992, 37(7):1253-1260.
［15］Sun B, Skyllas-Kazacos M. Electrochim Acta, 1992, 37(13):2459-2465.
［16］Yue Z R, Jiang W, Wang L, et al.Carbon,1999, 37(11):1785-1796.
［17］Pittman C U Jr, Jiang W, Yue Z R, et al. Carbon,1999, 37(11):1797-1807.
