| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.2355 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Generalized Route to Fe-N/C Electrocatalysts with Preferentially Generated Fe-Nx Active Sites for Efficient Oxygen Reduction Reaction |
| 초록 |
Iron-nitrogen on carbon (Fe-N/C) catalysts with Fe-Nx active sites have emerged as promising non-precious metal catalysts (NPMCs) for oxygen reduction reaction (ORR) in energy conversion and storage devices. However, rational design of Fe-N/C catalysts with abundant Fe-Nx species represents a challenge. In this talk, a general “silica-protective-layer-assisted” approach that enables the preferential generation of active Fe-Nx sites while suppressing the formation of less active large Fe-based particles is presented. The resulting catalyst comprised of carbon nanotube wrapped with thin porphyrinic carbon layer (CNT/PC) showed high ORR activity and remarkable stability in alkaline media. Importantly, a CNT/PC-based cathode exhibited record high current and power densities in an alkaline anion exchange membrane fuel cell (AEMFC) among NPMC-based AEMFCs, and also showed excellent performances in acidic proton exchange membrane fuel cells. We further demonstrated the generality of this synthetic strategy to other carbon supports including reduced graphene oxides and carbon blacks. |
| 저자 |
사영진1, 우진우2, 김민규3, 김태영4, 주상훈5
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| 소속 |
1울산과학기술원 화학과, 2울산과학기술원 에너지및화학공학부, 3포항가속기(연), 4한국에너지기술(연), 5울산과학기술원 에너지및화학공학부 / 울산과학기술원 화학과 |
| 키워드 |
비균질촉매; 기타 촉매분야
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
