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학술발표회초록보기

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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Iron-polypyrrole electrocatalyst with high activity and stability for the oxygen reduction reaction in both alkaline and acidic conditions

등록일
2015년 8월 27일 16시 47분 14초
접수번호
1050
발표코드
ELEC.P-542 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
전기화학
저자 및
공동저자
TRAN THANH NHAN, 송민영1, SINGHKIRANPAL2, 양대수1, 유종성1,*
대구경북과학기술원(DGIST) 에너지시스템공학전공, Vietnam
1대구경북과학기술원(DGIST) 에너지시스템공학과, Korea
2대구경북과학기술원(DGIST) 에너지시스템공학, India

Herein we present a facile template-free method to synthesize a new non-noble metal carbon catalyst for oxygen reduction reaction (ORR) by pyrolizing polypyrrole in presence of ferric source, which interestingly serves dual purpose of an oxidant for pyrrole polymerization and an iron source. It is found that as-prepared catalyst exhibits high catalytic activity for ORR in both alkaline and acidic conditions. The catalyst prepared at pyrolysis temperature of 900 oC (FePPy-900) shows exceptionally high ORR activity with onset potential of -14 mV, which is similar to that of Pt/C, whereas the half-wave potential (E1/2) of FePPy-900 is -98 mV, which is more positive than that of Pt/C at the same catalyst loading amount in alkaline condition. Furthermore, the FePPy-900 catalyst also illustrates exceptionally high ORR activity in acidic condition with onset potential and haft wave potential of 606 mV and 523 mV, respectively, which are almost comparable with those (610 mV and 503mV) of state of the art Pt/C catalyst, demonstrating remarkable high ORR activity in both alkaline and acid media despite relatively low surface area. In addition, the FePPy-900 catalyst displays much better stability and methanol tolerance than Pt/C and exhibits four electron transfer pathway in both alkaline and acidic conditions.


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