| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-에너지저장·변환 |
| 제목 |
Precursor Engineering for Active and Durable Ordered Intermetallic L10-PtFe Nanoparticles as Superior Oxygen Reduction Electrocatalyst |
| 초록 |
Minimized use of Pt in the cathode of polymer electrolyte membrane fuel cell has been a long goal for fuel cell economy. However, both activity and stability of Pt-M (M=Transition metals) alloy nanocatalysts are insufficient for practical application to PEMFC, especially because of poor stability of transition metals. One of the important concepts to resolve this problem is ordered intermetallic system, where the maximized activity and minimized dissolution can be achieved. Nevertheless, there has been only limited approaches to mitigate severe nanoparticle agglomeration during high-temperature annealing. To tackle this problem, we propose a new synthetic concept of bimetallic precursor for obtaining uniform ordered intermetallic PtFe nanocrystals under the protection of in situ formed N-doped carbon shell. The efficacy of the new approach is confirmed by both superior oxygen reduction activity and durable stability during the long-term accelerated degradation test. |
| 저자 |
유지문, 유태용, Arun Kumar Sinha, 현택환, 성영은
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| 소속 |
서울대 |
| 키워드 |
백금 나노촉매; 산소환원반응; 금속간 합금; 연료전지
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| E-Mail |
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