高等学校化学学报Issue(10)：1961-1968,8.DOI:10.7503/cjcu20150303
高载量 PtNi 金属间化合物的氧还原电催化性能
Electrocatalytic Performance of Highly Loaded PtNi Intermetallic Nanoparticles for Oxygen Reduction†
摘要
Abstract
PtNi/ C disordered alloy nanoparticles, synthesized in ethylene glycol solution, were annealed and converted into ordered PtNi/ C intermetallic nanoparticles. Such an ordered intermetallic PtNi/ C catalyst showed enhanced specific activity and mass activity, which were about 2. 3 and 1. 66 times those of Pt/ C for the oxygen reduction reaction( ORR), in comparison with the Pt/ C catalyst. After accelerated stress tests (ASTs), the ORR mass activity of the Pt/ C and PtNi/ C intermetallic nanoparticles decreased to 88. 92% and 36. 95% of the initial values, respectively; and the mass activity of PtNi/ C intermetallic nanoparticles after ASTs was equivalent to the initial one of the Pt/ C catalyst. The enhanced ORR activity and durability of the PtNi/ C intermetallic nanoparticles could be attributed to the ordered atomic configuration and the increased content of zero valence metal on the surface of nanoparticles. Moreover, the ordered PtNi/ C intermetallic nanoparticles exhibited higher methanol tolerance during the ORR than the Pt/ C catalyst.关键词
氧还原/PtNi 金属间化合物/电催化剂/高稳定性Key words
Oxygen reduction/PtNi intermetallic nanoparticles/Electrocatalyst/High durability分类
化学化工引用本文复制引用
黄庆红,邹亮亮,周毅,邹志青,张校刚,杨辉..高载量 PtNi 金属间化合物的氧还原电催化性能[J].高等学校化学学报,2015,(10):1961-1968,8.基金项目
国家“九七三”计划项目(批准号:2012CB932800)和国家自然科学基金(批准号:21073219)资助.? Supported by the National Key Basic Research Program of China(No.2012CB932800) and the National Natural Science Foundation of China (No.21073219) （批准号:2012CB932800）
