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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Facile synthesis of carbon-supported porous manganese–iron nanocomposites as bifunctional electrocatalysts

2017년 8월 23일 16시 42분 46초
ELEC.P-461 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 20일 (금요일) 13:00~14:30
저자 및
Nhan Duy Pham, JUN HO SHIM*
Department of Chemistry, Daegu University, Korea
Efficient low-cost electrocatalysts are indispensable for electrochemical oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). Typically, Pt-based nanoparticles are widely used as efficient catalysts to provide complete four-electron transport pathways with remarkably reduced overpotentials during ORR processes. However, the high cost and poor stability of Pt has led to the search for active non-precious metal/metal oxide catalysts that can replace Pt. On the other hand, OER plays a critical role in water splitting processes during solar fuel production or charge-discharge processes in rechargeable fuel cells and batteries. Unlike the ORR systems, transition metal oxides or perovskites are typically considered as excellent catalytic candidates for OER on account of their high activities and good stability. In this study, carbon-supported manganese-iron nanoparticles are successfully synthesized in various stoichiometries by using the reflux method followed by calcination at different temperatures for different times in the air. A combination of characterization techniques including transmission electron microscopy, scanning electron microscope, and the electrochemical analyzer was utilized to evaluate the structural, morphological and characterization of catalysts. This research was also supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1B03930895).