화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Materials Research, Vol.19, No.12, 667-673, December, 2009
DOI10.3740/MRSK.2009.19.12.667  Export Citation
다중벽 탄소 나노 튜브에 담지한 PtxM(1-x)(M = Co, Cu, Ni) 합금촉매의 제조 및 고분자 전해질 연료전지에서 산소환원 특성
Synthesis and Oxygen Reduction Reaction Characteristics of Multi-Walled Carbon Nanotubes Supported PtxM(1-x)(M = Co, Cu, Ni) Alloy Catalysts for Polymer Electrolyte Membrane Fuel Cell
정동원, 박순†, 안치영1, 최성호1, 김준범1
  • 울산대학교 첨단소재공학부
  • 1울산대학교 생명화학공학부
Dong-Won Jung,, Soon Park†, Chi-Yeong Ahn1, Seong-Ho Choi1, and Junbom Kim1
  • School of Materials Science and Engineering, Ulsan University, Ulsan, 680-749, Korea
  • 1School of Chemical engineering & Bioengineering, Ulsan University, Ulsan, 680-749, Korea
E-mail:
The electrocatalytic characteristics of oxygen reduction reaction of the PtxM(1-x)(M = Co, Cu, Ni) supported on multi-walled carbon nanotubes (MWNTs) have been evaluated in a Polymer Electrolyte Membrane Fuel Cell (PEMFC). The PtxM(1-x)/MWNTs catalysts with a Pt : M atomic ratio of about 3 : 1 were synthesized and applied to the cathode of PEMFC. The crystalline structure and morphology images of the PtxM(1-x) particles were characterized by X-ray diffraction and transmission electron microscopy, respectively. The results showed that the crystalline structure of the Pt alloy particles in Pt/MWNTs and PtxM(1-x)/MWNTs catalysts are seen as FCC, and synthesized PtxM(1-x) crystals have lattice parameters smaller than the pure Pt crystal. According to the electrochemical surface area (ESA) calculated with cyclic voltammetry analysis, Pt0.77Co0.23/ MWNTs catalyst has higher ESA than the other catalysts. The evaluation of a unit cell test using Pt/MWNTs or PtxM(1-x)/MWNTs as the cathode catalysts demonstrated higher cell performance than did a commercial Pt/ C catalyst. Among the MWNTs-supported Pt and PtxM(1-x)(M = Co, Cu, Ni) catalysts, the Pt0.77Co0.23/MWNTs shows the highest performance with the cathode catalyst of PEMFC because they had the largest ESA.
Keywords:Pt alloy catalyst;carbon nanotubes;polymer electrolyte membrane fuel cell;oxygen reduction reaction
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