CoTETA/MWCNT氧还原电催化剂的制备及活性评价

Study on Performance and Preparation of CoTETA/MWCNT ORR Electro-catalysts

氧还原催化剂的开发和研究一直影响着燃料电池和空气电池的发展。文章利用配位络合法制备了多壁碳纳米管负载的三乙烯四胺钴催化剂,并对催化剂进行了电化学测试,利用旋转环盘对表观电子转移数和双氧水生成率进行了研究,最后进行了单电池的测试。从结果来看,该催化剂最佳制备条件为:最佳焙烧温度为800℃,最佳Co含量为30%(wt%)。从单电池性能来看,碳纳米管载体体现出良好的扩散性能。

The development and research of oxygen reduction reaction catalyst have been affecting the development of fuel cells and air batteries. In the paper, the Cobalt Triethlene Tetraamine supported on multi-walled carbon nanotubes has been preapared by ligand complexation method. All of catalysts have been tested by electrochemical testing, then the apparent number of electron transfer and hydrogen peroxide generation rate was studied by rotating ring-disk and rotating disk, and finally a single fuel cell test was performed. From the results, the optimal preparation conditions of the catalysts are as following： the optimum calcination temperature was 800 ℃, the optimum Co content was 30 % （wt%）. From single fuel cell performance, the CNTs support reflects the good performance of diffusion.