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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 One-pot Synthesis of PdFePt Ternary Electrocatalyst with Synergetic Effect and Their Electrocatalytic Properties for Oxygen Reduction Reaction

등록일
2017년 8월 3일 09시 49분 29초
접수번호
0190
발표코드
ELEC.P-450 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 20일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Hyun-Uk Park, Wenjuan Shi, Ah-Hyeon Park, Jongun Jung, Young-Uk Kwon*
Department of Chemistry, Sungkyunkwan University, Korea
In this work, we have studied synergetic effect of PdFePt nanoparticles (NPs) supported on carbon support (PdFePt/C) along with different Pd precursors (Pd(acac)2 and PdO) and investigated their electrocatalytic performance for oxygen reduction reaction (ORR). PdFePt/C_Pd(acac)2 and PdFePt/C_PdO samples showed 4.5 and 2.8 nm sized PdFePt NPs respectively, and were synthesized by a one-step ultrasound-assisted polyol synthesis (UPS). For the preparation of PdFePt/C samples, Pt(acac)2, Fe(acac)3, Pd(acac)2 (or PdO) and carbon support were dispersed in ethylene glycol and irradiated by ultrasound for 3 h. Based on the structural characterization, we found that PdFePt/C_Pd(acac)2 sample have wide particle size distribution because of such big nanoparticles, whereas PdFePt/C_PdO sample show relatively well-dispersed and uniform sized PdFePt NPs on carbon support. It assumed that there might be difference pathway for particle growth during the synthetic process arose from different Pd precursors. Electrocatalytic properties of samples were investigated by rotating disk electrode (RDE) measurement. Compared with commercial Pt/C, PdFePt_Pd(acac)2 and PdFePt/C_PdO samples showed the enhanced ORR activity and durability in acid media. In conclusion, we observed that the synergetic effect of PdFePt ternary electrocatalyst along with types of Pd precursors and it can play a important role in elelectrocatalytic performance and durability.

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