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제125회 대한화학회 학술발표회 및 총회 Room-temperature prepared iron-doped nickel pyrophosphate with high chemical stability for improved oxygen evolution reaction catalyst and high-performance supercapacitor

등록일
2020년 2월 6일 13시 53분 11초
접수번호
0852
발표코드
ELEC.P-914 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
온라인 PDF 제출
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Yuanzhe Piao*, Dongwon Kim
Graduate School of Convergence Science and Technology, Seoul National University, Korea
Transition metal-phosphates have been studied for electrochemical energy conversion and energy storage applications in recent years. The preparation of transition metal-phosphorous composites usually demands a high energy consumption and toxic precursors that postponing the real applications. In this study, we report room-temperature preparation of iron-doped nickel pyrophosphate with high chemical stability for improved oxygen evolution reaction catalyst and high-performance supercapacitor. The iron-doped nickel pyrophosphate nanoparticle is synthesized via stirring of the precursor (Ni, Fe, and pyrophosphate) in room temperature. The introduction of pyrophosphate promotes the facile Ni oxidation and high chemical stability, overall beneficial to electrochemical applications and the environment. The oxygen evolution reaction performance of NFPy exhibits promising outcome that only required the overpotential of 0.210 V to reach 10 mA·cm-2. With the help of carbon nanotubes, supercapacitor using NFPy exhibits a good electrochemical performance with the capacity of 517 C·g-1 at 1 A·g-1. The synthesized NFPy owns an exceptional long-term chemical stability that maintained its chemical valence state and electrochemical performance for over 8 months despite the exposure of air.

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