钴铁双金属有机骨架及其衍生碳材料的制备与电化学性能研究

Preparation and Electrochemical Properties of Cobalt-Iron Bimetallic Organic Framework and its Derived Carbon Materials

为应对能源危机和环境污染问题,推动新能源的开发利用迫在眉睫,研究开发电化学性能优越的新型催化剂材料具有重要意义。金属有机骨架材料凭借其优异的结构特点,展现出很好的电催化潜能。通过溶剂热法合成不同金属比例的双金属有机骨架材料及其衍生碳材料,通过物理化学表征以及电池性能分析,研究其微观组成、结构和电催化性能。结果表明,钴铁金属比例为2.1的双金属有机骨架衍生碳材料具有最优的电化学催化活性,其单电池功率密度达到135 mW/cm^(2),高于商业Pt/C催化剂电池(131 mW/cm^(2))。高效的双金属有机骨架衍生碳材料将作为可替代贵金属的新型电催化剂,在众多能源转换系统中均具有潜在应用价值。

In order to cope with the energy crisis and environmental pollution,it is extremely urgent to promote the development and utilization of new energy.It is of great significance to study and develop new catalyst materials with excellent electrochemical performance.Metal-organic framework materials exhibit excellent electrocatalytic potential due to their excellent structural characteristics.In this paper,bimetallic organic framework materials with different metal ratios and their derived carbon materials were synthesized by solvothermal method,and their microscopic composition,structure and electrocatalytic performance were studied by physical and chemical characterization and battery performance analysis.The results show that the bimetallic organic framework-derived carbon material with a cobalt-iron-metal ratio of 2.1 has the best electrochemical catalytic activity,and the power density of the single cell reaches 135 mW/cm^(2),which is higher than that of the commercial Pt/C catalyst cell(131 mw/cm^(2)).High efficiency bimetallic organic framework derived carbon materials will be used as new electrocatalysts to replace precious metals and have potential application value in many energy conversion systems.