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  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Electrofibrous Nickel-Rhodium Oxide Nanocomposites for Efficient Electrocatalytic Oxygen Evolution Reaction.

2019년 8월 19일 16시 49분 19초
ELEC.P-403 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 17일 (목요일) 11:00~12:30
저자 및
Dasol Jin, Areum Yu, Youngmi Lee*, Myung Hwa Kim*, Chongmok Lee*
Department of Chemistry and Nano Science, Ewha Womans University, Korea
In the fuel cell systems, the numerous OER catalysts have been synthesized, but noble metal-based electrocatalysts (NMEs) have become the most practical electrocatalysts in terms of durability despite their high cost. It is thus necessary to synthesize catalysts by mixing the cheaper metals with noble metals. The activity of the catalysts is also influenced by the crystallinity whether crystalline or amorphous. It is often reported that amorphous form has more unsaturated sites than crystalline structure. In this study, we have synthesized mixed Ni-Rh oxide nanocomposites, NixRh1-xOy (0 < x < 1), for cost-effective OER NMEs through electrospinning and calcination process by controlling the metal molar ratio. The morphology and catalytic activity have been varied depending on mixing ratio and crystallinity. The morphology and composition of NixRh1-xOy have been characterized by a field emission scanning electron microscope (FESEM) equipped with an energy dispersive X-ray spectrometer (EDS), high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). Electrochemical measurements for OER have been performed using electrochemical analyzer with RDE in N2-saturated 1 M NaOH aqueous solution. The support by the National Research Foundation of Korea (NRF), NRF-2019R1F1A1059969 for CL and NRF-2018R1A6A1A03025340 for YL and KMH, is gratefully acknowledged.