磷钼酸(PMA)修饰炭载Pd催化剂对甲酸氧化的电催化性能  

Electrocatalytic performance of phosphomolybdic acid modified and carbon supported Pd catalyst for oxidation of formic acid

作　　者：洪玉洁[1] 杨改秀[2] 唐亚文[1] 陆天虹[1] 

机构地区：[1]江苏省新型动力电池重点实验室,南京师范大学化学与材料科学学院,南京210097 [2]中国科学院可再生能源与天然气水合物重点实验室,中国科学院广州能源研究所,广州510640

出　　处：《中国科学：化学》2011年第12期1811-1816,共6页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(20873065和21073094);江苏高校优势学科建设工程项目的资助

摘　　要：为了提高直接甲酸燃料电池(DFAFC)中炭载Pd(Pd/C)催化剂对甲酸氧化的电催化性能,用回流法制备了磷钼酸(PMA)修饰的炭载Pd(PMA-Pd/C)催化剂.并用谱学技术和电化学技术表征了催化剂的组分和结构,发现PMA通过化学作用而牢固地固定在Pd表面.由于PMA-Pd/C催化剂能抑制甲酸的自分解,因此,PMA-Pd/C催化剂对甲酸氧化的电催化性能优于Pd/C催化剂.In order to increase the electrocatalytic performance of the Pd/C catalyst for the oxidation of formic acid in DFAFC,the PMA-Pd/C catalyst was prepared with the reflux method.The composition and structure of the PMA-Pd/C catalyst was characterized with spectroscopic and electrochemical techniques.It was found that PMA is tightly fixed on Pd surface through the chemical interaction.Because the PMA-Pd/C catalyst can inhibit the decomposition of formic acid,The electrocatalytic performance of the PMA-Pd/C catalyst for the oxidation of formic acid is better than that of the Pd/C catalyst.

关 键 词：磷钼酸 甲酸 直接甲酸燃料电池 炭载Pd催化剂 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O643.3[理学—物理化学]