氮掺杂石墨烯负载尖晶石钴铁氧化物氧还原催化剂的制备及性能研究  

Synthesis and Properties of Spinel Cobalt Iron Oxide Supported on N-doped Graphene Catalysts for Qxygen Reduction Reaction

作　　者：张廷尉 李铁纯 刁全平 罗维巍 ZHANG Tingwei;LI Tiechun;DIAO Quanping;LUO Weiwei(School of Chemistry and Life Science,Anshan Normal University,Anshan Liaoning 114007,China;Liaoning Key Laboratory of Development and Utilization for Natural Products Active Molecules,Anshan Liaoning 114007,China)

机构地区：[1]鞍山师范学院化学与生命科学学院,辽宁鞍山114007 [2]辽宁省天然产物活性分子开发及利用重点实验室,辽宁鞍山114007

出　　处：《鞍山师范学院学报》2024年第6期37-42,共6页Journal of Anshan Normal University

基　　金：辽宁省博士科研启动基金计划项目(2022-BS-346);鞍山师范学院校级科研项目(22KYXM044).

摘　　要：以聚苯并咪唑(PBI)为氮源和碳源,通过高温热解合成具有高含氮量的氮掺杂石墨烯,随后经水热反应制备氮掺杂石墨烯负载尖晶石CoFe_(2)O_(4)-NG#400催化剂.电化学测试表明,CoFe_(2)O_(4)-NG#400的起始电位为0.123 V、半波电位为-0.044 V,催化活性接近商用20%Pt/C催化剂.同时,CoFe_(2)O_(4)-NG#400的耐久性优于商用20%Pt/C催化剂.实验结果表明,CoFe_(2)O_(4)-NG#400具有良好的催化氧还原性能,可以作为一种非贵金属氧还原催化剂应用在燃料电池领域.N-doped graphene(NG)with high N content is prepared by high temperature pyrolysis using poly(2,5-benzimidazole)(PBI)as nitrogen and carbon sources.Spinel CoFe_(2)O_(4)supported on NG is prepared by hydrothermal method.The electrochemical tests exhibit that the onset potential of CoFe_(2)O_(4)-NG#400 is 0.12 V,and the half-wave potential of CoFe_(2)O_(4)-NG#400 is-0.044 V.The catalytic activity is close to that of commercial 20%Pt/C catalyst.In addition,CoFe_(2)O_(4)-NG#400 has better durability than commercial 20%Pt/C catalyst.The experimental results show that CoFe_(2)O_(4)-NG#400 has good catalytic oxygen reduction reaction performance and can be used as a non-precious metal oxygen reduction reaction catalyst in the field of fuel cells.

关 键 词：氮掺杂石墨烯 尖晶石 钴铁氧化物 氧还原催化剂 

分 类 号：O646[理学—物理化学]