| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 |
12권 2호, p.1901 |
| 발표분야 |
에너지/환경 |
| 제목 |
Performance Improvement of Direct Methanol Fuel Cells by Anodic Treatment |
| 초록 |
Anodic treatment of DMFC single cells was carried out at anode potentials of 0.1, 0.4, 0.7 and 1.0 V (vs DHE). The anodic treatment was performed flowing 1.0 M sulfuric acid (anode) and hydrogen (cathode) at 55 oC for 30 min. Increase of maximum power density by 48 % was achieved after anodic treatment at 0.7 V. Electrochemical impedance spectroscopic study showed that methanol electro-oxidation activity of PtRu catalyst was promoted by the anodic treatment. Oxidation states of Ru changed from Ru metal (43 %) and RuO2 (57 %) to RuO2 (33 %) and RuOxHy (67 %) after anodic treatment at 0.7 V, which were studied by X-ray photoelectron spectroscopy. The results showed that formation of RuOxHy was occurred at a potential range of 0.4 ~ 0.7 V. |
| 저자 |
전민구, 원정연, 이기락, 우성일
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| 소속 |
한국과학기술원 생명화학공학과 & 초미세 화학공정 시스템 연구센터 |
| 키워드 |
direct methanol fuel cell; membrane-electrode assembly; methanol electro-oxidation; anodic treatment
|
| E-Mail |
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| 원문파일 |
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