由钴配位聚合物得到的氮掺杂碳材料的制备及性能研究

Co-N/C Derived From Cobalt Based Coordination Polymer for Oxygen Reduction Reaction

采用溶剂反应合成钴与苯并咪唑的配位聚合物Co-BIM,并在高温条件下热解得到氮掺杂碳材料Co-N/C。通过探究不同热处理温度以及酸处理对该材料的催化氧还原性能的影响,得到催化氧还原性能最优的材料Co-N/C-800。电化学测试发现,Co-N/C-800在O_2饱和的碱性溶液中有较正的氧还原起始电位(0.92V)和半波电位(0.83V),接近于商业20%Pt/C,具有良好的氧还原催化性能。

Co-N/C was obtained by pyrolyzing the cobalt coordination polymer （Co-BIM） through solvent reaction of cobalt acetate and organic ligand （benzimidazole）. The influence of thermal treatment and acid treatment were studied and superior electrocatlyst Co-N/C-800 was obtained. The Co-N-C-800 exhibited good electrocatalytic activity in O2-saturated alkaline solution with higher onset potential （0.92V） and half-wave potential （0.83V）,which was close to Pt/C.