赵东江,马松艳,尹鸽平.简单一步法合成Co9S8氧还原反应电催化剂[J].稀有金属材料与工程,2017,46(12):3577~3582.[Zhao Dongjiang,Ma Songyan,Yin Geping.A Facile One-step Synthesis of Co9S8 Electrocatalyst for Oxygen Reduction Reaction[J].Rare Metal Materials and Engineering,2017,46(12):3577~3582.]
简单一步法合成Co9S8氧还原反应电催化剂
投稿时间:2015-12-17  修订日期:2016-01-07
中文关键词:  氧还原  非贵金属催化剂  钴硫化合物  聚合物电解质膜燃料电池
基金项目:黑龙江省自然科学基金资助项目(B201423)
中文摘要:
      采用低温回流技术,以Co4(CO)12和S粉为原料,在1, 6-己二醇溶剂中一步合成了钴硫化物催化剂。用X射线衍射仪和扫描电子显微镜对合成的化合物进行了表征。XRD分析表明合成样品为立方结构的Co9S8化合物,其SEM图片显示了花椰菜状的表面形貌。Co9S8化合物表现出良好的氧还原催化活性,开路电位为0.75 V(vs. NHE)。在电荷转移控制电位区,电极反应传递系数和塔菲尔斜率分别为0.50和119 mV。同时,将催化剂的催化活性和电化学稳定性与商业铂催化剂进行了比较。
A Facile One-step Synthesis of Co9S8 Electrocatalyst for Oxygen Reduction Reaction
英文关键词:oxygen reduction  non-noble metal catalyst  cobalt sulfide  polymer electrolyte membrane fuel cells
英文摘要:
      A Co-based chalcogenide electrocatalyst has been synthesized by a facile one-step reaction of dodecacarbonyltetracobalt [Co4(CO)12] and elemental sulfur in 1, 6-hexanediol solvent under refluxing conditions. The characterizations of the synthesized compound are performed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD shows the formation of cubic structure Co9S8 and SEM micrograph displays cauliflower-like surface morphologies. The catalyst has an open circuit potential (OCP) of 0.75 V (vs. NHE) and shows a promising catalytic activity for the oxygen reduction. The transfer coefficient and Tafel slope are calculated to be 0.50 and 119 mV in the potential region limited by charge transfer kinetics, respectively. The catalytic activity and the electrochemical stability of the catalyst have also been compared with a commercial Pt catalyst.
作者单位E-mail
赵东江 哈尔滨工业大学化工学院, 绥化学院食品与制药工程学院 zhaodongjiang1965@163.com 
马松艳 绥化学院食品与制药工程学院  
尹鸽平 哈尔滨工业大学化工学院  
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