| 학회 |
한국공업화학회 |
| 학술대회 |
2012년 봄 (05/09 ~ 05/11, 김대중컨벤션센터) |
| 권호 |
16권 1호 |
| 발표분야 |
촉매 |
| 제목 |
First Principles Study on the Electrochemical Dissolution Processes of Pt Nanocatalysts |
| 초록 |
To understand electrochemical degradation mechanisms of fuel cell catalysts, we ab-initio calculate dissolution potentials of nano-scale Pt particles as function of size and morphology. We investigate electrochemical stability of each symmetrically inequivalent site to identify thermodynamically the most plausible dissolution way. Our results indicate that Pt nanocatalysts of less than 3nm degrade through shell by shell dissolutions into acidic aqueous solution, but the electrochemical durability enhances as particle size increases. |
| 저자 |
서준교, 한병찬
|
| 소속 |
DGIST |
| 키워드 |
Ab-initio; Catalyst; Platinum; Dissolution; Degradation; Fuel Cell;
|
| E-Mail |
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