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제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis of Carbon-supported Pt-Ni Alloy Nanoparticles by Ultrasound and Their Enhanced Electrocatalytic ORR Activity

등록일
2011년 8월 1일 14시 38분 09초
접수번호
1131
발표코드
Ⅱ-MAT.P-277 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅱ>
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
이은직, 장지훈1, 권영욱1
성균관대학교 나노과학기술협동학부, Korea
1성균관대학교 화학과, Korea
Ultrasound-assistant polyol reduction method has been used to synthesize carbon-supported Pt-Ni NPs (denoted as Pt-Ni/C) as a cathode electrocatalyst for oxygen oxidation reaction. The obtained materials are characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), high angle annular dark field scanning transmission electron microscopy (HAADF-STEM). Based on physical characterization results, the particle size was in the range of 3~5 nm and Pt-rich composition was estimated. The electrocatalytic activity of catalyst for oxygen reduction reaction was measured by linear sweep voltammetry (LSV) with rotating disk electrode (RDE) which showed larger mass activity and specific activity than commercial Pt/C (E-TEK). Therefore, Pt-Ni NPs were highly efficient electrocatalyst and could reduce Pt usage while the same electrocatalytic activity was kept for ORR in polymer electrolyte membrane fuel cells (PEMFCs).

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