Promoting effects of La for improved oxygen reduction activity and high stability of Pt on Pt–La alloy electrodes
SCIE
SCOPUS
- Title
- Promoting effects of La for improved oxygen reduction activity and high stability of Pt on Pt–La alloy electrodes
- Authors
- YOO, SUNG JONG; HWANG, SEUNG JUN; LEE, JUNE-GUNN; LEE, SEUNG-CHEOL; LIM, TAE-HOON; SUNG, YUNG-EUN; WIECKOWSKI, ANDRZEJ; KIM, SOO-KIL
- Date Issued
- 2012-06
- Publisher
- Royal Society of Chemistry
- Abstract
- The design of polymer electrolyte fuel cell electrocatalysts depends on two equally important fundamental principles: the optimization of electrocatalytic activities as well as the long-term stability under operating conditions (e.g., pH < 1 and E > 0.8 V). Pt-based alloys with transition metals (i.e., Pt–La) address both of these key issues. The oxygen reduction kinetics depends on the alloy composition which, in turn, is related to the d-band center position. The stability of the oxygen reduction reaction is predictable by correlation of the d-band fillings and vacancies of Pt–M (M = Ti, Fe, Zr and La).
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/99962
- DOI
- 10.1039/c2ee02691k
- ISSN
- 1754-5692
- Article Type
- Article
- Citation
- Energy and Environmental Sciences, vol. 5, no. 6, page. 7521 - 7525, 2012-06
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