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电化学  2013 

O-掺杂石墨电极VO2+/VO2+电对反应活性研究

, PP. 120-124

Keywords: 全钒电池正极,氧气等离子体,电化学活性

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Abstract:

采用氧气等离子体处理石墨电极表面,实现氧及含氧官能团的掺杂,以改善VO2+/VO2+电对的反应活性.FT-IR和EDS测试结果表明,氧气等离子体处理石墨表面引入了含氧官能团,从而提高了VO2+/VO2+电对的电化学活性.在本文实验条件下20min等离子体处理的电极活性最好,8mAcm-2电流密度恒流充放电,石墨电极VO2+/VO2+电对库仑效率达到91%,比未处理电极的库仑效率提高了19%.

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