期刊
ELECTROCHEMICAL AND SOLID STATE LETTERS
卷 15, 期 5, 页码 B72-B74出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.004206esl
关键词
-
资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
- National Science Foundation [CBET 1118294, DMR-0703940]
- Toyota Motor Engineering & Manufacturing North America Inc.
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1118294] Funding Source: National Science Foundation
An in-situ method to measure changes in catalyst particle size at the cathode of a proton exchange membrane fuel cell is demonstrated. Synchrotron X-rays, 58 keV, were used to measure the pair distribution function on an operating fuel cell and observe the growth of catalyst particles under accelerated degradation conditions. The stability of Pt/C and PtCo/C with different initial particle sizes was monitored over 3000 potential cycles. The increase in particle size was fit to a linear trend as a function of cycles. The most stable electrocatalyst was found to be the alloyed PtCo with the larger initial particle size. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.004206esl] All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据