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Performance and stability characteristics of MEAs with carbon-supported Pt and Pt1Ni1 nanoparticles as cathode catalysts in PEM fuel cell
- Cho, Yong-Hun;
- Jeon, Tae-Yeol;
- Lim, Ju Wan;
- Cho, Yoon-Hwan;
- Ahnb, Minjeh;
- 외 4명
WEB OF SCIENCE
17SCOPUS
20초록
Polarization curves of membrane electrode assemblies (MEAs) containing carbon-supported platinum (Pt/C) and platinum-nickel alloy (Pt1Ni1/C) as cathode catalysts were obtained for durability test as a function of time over 1100 h at constant current. Charge transfer resistance was measured using electrochemical impedance spectroscopy and postmortem analysis such as X-ray diffraction and high-resolution transmission electron microscopy was conducted in order to elucidate the degradation factors of each MEA. Our results demonstrate that the reduced performance of MEAs containing Pt1Ni1/C as a cathode catalyst was due to decreased oxygen reduction reaction caused by the corrosion of Ni, whereas that of MEAs containing Pt/C was because of reduced electrochemical surface area induced by increased Pt particle size. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
키워드
- 제목
- Performance and stability characteristics of MEAs with carbon-supported Pt and Pt1Ni1 nanoparticles as cathode catalysts in PEM fuel cell
- 저자
- Cho, Yong-Hun; Jeon, Tae-Yeol; Lim, Ju Wan; Cho, Yoon-Hwan; Ahnb, Minjeh; Jung, Namgee; Yoo, Sung Jong; Yoon, Won-Sub; Sung, Yung-Eun
- 발행일
- 2011-04
- 유형
- Article
- 권
- 36
- 호
- 7
- 페이지
- 4394 ~ 4399