| 钒液流电池用碳纸电极改性的研究 |
| Characteristics of Carbon Paper as Electrode for Vanadium Redox Flow Battery |
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| 摘要: 采用红外光谱和扫描电镜等手段研究了浓硫酸处理前、后碳纸的表面结构和形貌的变化。并将这类碳纸用作全钒液流氧化还原电池电极材料，对其电化学性能进行了详细研究。结果表明通过酸处理，碳纸表面有-COOH官能团生成，其电化学活性增强。酸处理后的碳纸电极组装成的电池在电流密度20 mA·cm-2时有良好充放电性能，平均电流和电压效率达到95%和82%。 |
| 关键词: 钒液流电池 碳纸 酸处理 |
| 基金项目: |
| Abstract: The commercial accessible carbon paper (CP) treated in sulfuric acid solution were characterized by FTIR spectroscopy and SEM, and at the same time, their electrochemical behaviors were investigated by cyclic voltammograms, Impedance spectroscopy and charge-discharge techniques. The results show that -COOH functional groups come into being during acidification treatment, and CP electrode erod by sulfuric acid solution. The VRB with modified CP electrode exhibits excellent performance under a current density of 20 mA·cm-2. The average current efficiency reaches 95% and average voltage efficiency reaches 82%. The improvement of electrochemical performance for the electrode is ascribed to the -COOH group and the special surface of CP. |
| Keywords: vanadium redox battery carbon paper acidification |
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| 刘素琴,史小虎,黄可龙,李晓刚,李亚娟,吴雄伟.钒液流电池用碳纸电极改性的研究[J].无机化学学报,2008,24(7):1079-1083. |
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