Nanosized Pt
By Sung Jong Yoo and Yung-Eun Sung
Published in Surface Science
2015
Abstract
Although alloying with late transition metals such as Ni, Co, and Fe significantly enhances the oxygen reduction reaction (ORR) activity, stability issues have inhibited further performance improvements of fuel cells. Acidic media (pH < 1) at high electrochemical potential (> 0.7 VRHE) induced metal dissolution and also affected the catalytic activity. In terms of the stability issues of alloy nanoparticles, we focused on the early-transition-metal alloy system (Pt