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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Enhanced Electrochemical Stability of Electrolyte and Corrosion Suppression on GO Coated Current Collectors in Grignard Reagent-Based Electrolytes (APC) for Magnesium Ion Battery

등록일
2017년 8월 24일 10시 47분 49초
접수번호
1463
발표코드
ELEC.P-472 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 20일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Prabakar Richard, myoungho pyo*
Department of Printed Electronics Engineering, Suncheon National University, Korea
The electrochemical stabilities of some non-noble metal current collector electrodes in a magnesium ion battery (MIB) using Grignard reagent type electrolyte (APC) were investigated, wherein the chloride ions were responsible, which eventually lowered the corrosion resistance and electrolyte stability. In this investigation, we explore the possibilities of graphene oxide (GO) coatings on the non-noble metal current collector electrodes (Al, Cu and SS) via electrophoretic deposition. The GO-coated substrates displayed significantly large improvement in corrosion resistance, predominantly with a notable suppression of electrolyte decomposition at high potentials (4.0V), without the reversible deposition/stripping of Mg being affected. Studies showed a variance in the corrosion resistance which was dependent on the functional groups on graphene, coating effectiveness and thickness. We address that such a remarkable improvement by GO-coating is associated with electrostatic charge interaction between ion charges of electrolytes and surface-functional groups of GO. In addition, GO-coating does not aggravate the cathode performance of Mo6S8, allowing the use of non-noble metals as current collectors as replacement to expensive Pt current collector electrode.

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