摘要
用循环伏安方法制备了二氧化锰/多壁碳纳米管(MnO2/MWCNTs)复合材料,分别在中性和弱碱性的硫酸钠溶液中对其进行氧还原电化学测试。结果显示,在合适条件下,MnO2/MWCNTs复合材料的电催化还原氧气的电流值明显大于单独MWCNTs和单独MnO2电催化还原电流值,说明MnO2/MWCNTs复合材料具有良好的催化还原活性;在弱碱性的环境下,随着碱性的增强,MnO2/MWCNTs复合材料的电催化还原活性逐渐增强,同时显示出稳定的电催化还原活性。
MnO2/MWCNTs-modified graphite electrode was prepared by cyclic voltammetry （CV）, and its catalysis for oxygen reduction reaction in neutral and alkaline medium was investigated respectively by the electrochemical technique. It is shown that the higher electrocatalysis of MnO2/MWCNTs for ORR is exhibited when compared to the MWCNTs-modified electrode and MnO2-modified graphite electrode; electrocatalysis of MnO2/MWCNTs for ORR is increased when the content of OH-in solution enhanced, and higher stable catalysis for ORR is also exhibited by MnO2/MWCNTs.
出处
《河北科技大学学报》
CAS
北大核心
2009年第1期30-34,共5页
Journal of Hebei University of Science and Technology
基金
河北省留学回国人员择优资助项目(106115)
河北省教育厅重点项目(ZH2007106)
河北师范大学博士基金资助项目(L2003B10)
