Pt-W-Ru-Se簇合物用于DMFC氧还原性能的研究  

Investigation on Oxygen Reduction of Pt-W-Ru-Se Cluster Used for Direct Methanol Fuel Cells

作　　者：牛秀红[1] 刘世斌[2] 

机构地区：[1]宁夏职业技术学院,宁夏银川750002 [2]太原理工大学,山西太原030024

出　　处：《稀有金属材料与工程》2010年第4期647-651,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(20476067);山西省自然科学基金(20041021)

摘　　要：用低温合成法制备出不同Pt掺杂量的Pt-W-Ru-Se催化剂,应用旋转圆盘电极电位扫描法测试其对氧还原反应的催化作用,采用XRD、EDS、XPS技术表征结构及表面组成。结果表明,Pt能够显著增强W-Ru-Se对氧还原反应的催化活性,尤其以含5%Pt(质量分数,下同)的Pt-W-Ru-Se催化剂最为明显,在0.5mol·L-1H2SO4中其对氧还原反应的电催化活性超过了W-Ru-Se和Pt;甲醇存在时,其稳定性和抗甲醇性也都超过了Pt。Pt-W-Ru-Se catalysts with different Pt contents were fabricated by low-temperature synthesis and their catalysis effect on the oxygen reduction reaction was tested by the rotating-disk-electrode potential sweep method. The microstructure and surface composition of the obtained catalysts were characterized by XRD, EDS and XPS. Results show that Pt can greatly enhance the catalysis activity of W-Ru-Se to oxygen reduction. In particular, Pt-W-Ru-Se with 5% Pt （mass fraction, similarly hereinafter） is the most obvious one, whose catalysis activity to oxygen reduction is superior to that of W-Ru-Se and Pt in 0.5 mol·L^-1 H2SO4. Its stability and resistance-methanol is better than that of Pt when there is methanol.

关 键 词：氧还原 Pt-W—Ru—Se 性能 抗甲醇性 

分 类 号：TM911.4[电气工程—电力电子与电力传动]