Pt/炭黑改性对石墨电极乙醇电催化的影响Influence of surface modification on electro-catalytic properties of graphite electrode by depositing Pt and carbon black
楼白杨,陈茂军,余科尔,徐斌
摘要(Abstract)：
采用真空离子镀和乙醇催化燃烧方法对燃料电池石墨电极进行纳米Pt和炭黑复合表面改性,用扫描电镜(SEM)、透射电镜(TEM)、电化学工作站等手段研究电极表面改性前后的组织形貌和电催化性能,并探讨了纳米Pt和炭黑对电极电催化性能的影响。研究表明,石墨电极经过纳米Pt/炭黑复合表面改性后,其循环伏安曲线上出现了三个氧化峰并具有更大的背景电流。与纳米Pt单一表面改性相比,纳米Pt/炭黑复合表面改性后的电极对乙醇的电催化性更好。纳米炭黑表面改性获得的高比表面积以及催化材料Pt的协同作用有效提高了电极对乙醇的电催化性能。
关键词(KeyWords)： 直接乙醇燃料电池;纳米Pt;炭黑;电催化
基金项目(Foundation): 浙江省“新材料和加工技术”重中之重学科开放基金
作者(Author): 楼白杨,陈茂军,余科尔,徐斌
DOI: 10.13289/j.issn.1009-6264.2011.04.005
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