Carbon-supported Pt-Co alloy nanoparticles for oxygen reduction reaction
Carbon-supported Pt-Co alloy nanoparticles for oxygen reduction reaction
复制标题
用于氧还原反应的碳载Pt-Co合金纳米颗粒
DOI：
10.1016/j.elecom.2006.05.027
复制
发表时间：
2006-08-01
影响因子：
5.4
通讯作者：
Akins, Daniel L.
中科院分区：
文献类型：
--
作者：
Huang, Qinghong;Yang, Hui;Akins, Daniel L.
研究了碳载Pt-Co合金纳米颗粒的氧还原反应。制备的铂钴合金纳米颗粒呈单相无序结构，粒径非常小。与Pt/C催化剂相比，这种合金催化剂的Pt质量活性提高了约1.3-3.2倍，ORR的比活性提高了约1.2-2.2倍。电催化活性的增强是由于合金化使Pt-Pt平均原子间距离增大和合金催化剂的高分散性所致。(c) 2006 Elsevier B.V.版权所有
The oxygen reduction reaction (ORR) on carbon-supported Pt-Co alloy nanoparticles has been investigated. As-prepared Pt-Co alloy nanoparticles exhibit a single-phase disordered structure and have a very small particle size. Such alloy catalysts exhibit an enhancement of a factor of ca. 1.3-3.2 in Pt mass activity and of a factor of ca. 1.2-2.2 in the specific activity for the ORR when compared to Pt/C catalyst. The enhanced electrocatalytic activity is attributed to the favorable Pt-Pt mean interatomic distance caused by alloying and to the high dispersion of the alloy catalysts. (c) 2006 Elsevier B.V. All rights reserved.