高等学校化学学报2018，Vol.39Issue(2)：343-350,8.DOI:10.7503/cjcu20170288
钴/氮掺杂碳纳米管/石墨烯复合材料的构筑 及氧还原催化性能
Co / N Co-doped Carbon Nanotube / Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction
摘要
Abstract
Cobalt/ nitrogen co-doped carbon nanotube / graphene composites(Co / N-CNT/ Gr-X, X represents the calcination temperature) were prepared by high temperature nitrogen doping with homemade graphene /N-methylpyrrolidone(NMP) dispersion and Co(NO3 ) 2 as precursors. The results show that the solvent NMP in the graphene dispersion as a carbon source forms high-density carbon nanotubes on the surface of graphene with cobalt salt as catalysts, which provided a three-dimensional porous structure favorable for massive transfer of electrolyte ions. In addition, some cobalt ions were oxidized to form cobalt oxide and the others reacted with N to form a Co—N active site, thus leading to a markedly enhanced oxygen reduction reaction ( ORR) performance. Among them, Co / N-CNT/ Gr-800 exhibits a good performance in electrocatalytic activity, stabili-ty, and immunity towards methanol comparing with commercial carbon platinum(Pt/ C) catalyst, the reduction potential and limiting current density of which were -0. 137 V( vs. SCE) and 4. 24 mA/ cm2 , respectively. And the electron transfer number was 3. 34.关键词
电催化剂/氧还原反应/碳纳米管/石墨烯/杂原子掺杂Key words
Electrocatalyst/Oxygen reduction reaction/Carbon nanotubes/Graphene/Heteroatom doping分类
化学化工引用本文复制引用
狄沐昕,肖国正,黄鹏,曹翊寰,朱英..钴/氮掺杂碳纳米管/石墨烯复合材料的构筑 及氧还原催化性能[J].高等学校化学学报,2018,39(2):343-350,8.基金项目
国家自然科学基金(批准号:51473008, 73028701)资助.Supported by the National Natural Science Foundation of China(Nos.51473008, 73028701). （批准号:51473008, 73028701）
