【作者】 师红丽； 王瑞英； 孙志鹏；

【Author】 Hong-Li Shi;Rui-Ying Wang;Zhi-Peng Sun;Key Laboratory of Energy Materials Chemistry,Ministry of Education,Key Laboratory of Advanced Functional Materials,Autonomous Region,Institute of Applied Chemistry,Xinjiang University;Physical and Chemical Analysis Center,Xinjiang University;

【机构】 新疆大学应用化学研究所能源材料化学教育部重点实验室先进功能材料新疆维吾尔自治区重点实验室； 新疆大学理化测试中心；

【摘要】 直接甲醇燃料电池（DMFC）是新能源材料研究开发的热点领域^[1]。Pt基催化剂是DMFC的重要阳极催化剂^[2],但Pt储量少,价格昂贵,且在催化过程中易受CO中毒而降低其催化活性。因此,如何提高Pt基催化剂的电催化性能及抗CO中毒能力,是DMFC发展的关键。本文将具有高比表面积、优异电子传递性能的石墨烯（GN）作为载体以及有助于将中间产物CO转化为CO₂的多金属氧酸盐（POM）同时引入直接甲醇燃料电池阳极催化剂,采用热回流法和微波法制备Pt/POM/GN复合材料。通过XRD、EDS、TEM等表征复合材料的组成、结构与形貌,采用CV法测定复合材料的电化学性能。研究结果表明,催化剂载体GN和POM的引入有效提高了催化剂的电催化活性和抗CO中毒能力。更多还原

【Abstract】 Direct methanol fuel cell（DMFC） has become hot spots in the research and development of new energy materials. Pt based catalysts are known as superior anode catalysts for DMCF. However, Pt is less, expensive, and easy to be poisoned by CO in the catalytic process which lead to its catalytic activity is reduced. Therefore, it’s vital to improving the electrocatalytic properties and avoiding CO poisoning of Pt base catalysts for DMFC. Hence, graphene（GN） which has the high specific surface area and outstanding electron transport serves as a supporter, and the polyoxometalate（POM） which has ability to convert intermediate CO into CO₂ are introduced into DMFC anode catalysts to prepare Pt/POM/GN composite materials by thermal reflow and microwave method. The compositions, structures, morphologies and electrochemical properties of composite materials have been characterized by XRD, EDS, TEM and CV. The results reveal that GN and POM effectively improved electrocayalytic properties and the abilities to resist CO poisoning.更多还原