Preparation and Characterization for Carbon Composite Gas Diffusion Layer on Polymer Electrolyte Membrane Fuel Cells

고분자 전해질 연료전지에서 탄소복합 기체확산층의 제조와 특성분석

  • Shim, Joong-Pyo (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • Han, Choon-Soo (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • Sun, Ho-Jung (Department of Material Science & Engineering, Kunsan National University) ;
  • Park, Gyung-Se (Department of Chemistry, Kunsan National University) ;
  • Lee, Ji-Jung (Fuel Cell Regional Innovation Center, Woosuk University) ;
  • Lee, Hong-Ki (Fuel Cell Regional Innovation Center, Woosuk University)
  • 심중표 (군산대학교 나노화학공학과) ;
  • 한춘수 (군산대학교 나노화학공학과) ;
  • 선호정 (군산대학교 신소재공학과) ;
  • 박경세 (군산대학교 화학과) ;
  • 이지정 (우석대학교 수소연료전지 및 응용부품기술 지역혁신센터) ;
  • 이홍기 (우석대학교 수소연료전지 및 응용부품기술 지역혁신센터)
  • Received : 2012.01.27
  • Accepted : 2012.02.24
  • Published : 2012.02.28


Gas diffusion layers (GDLs) of carbon composite type in polymer electrolyte fuel cells were prepared by simple and cheap manufacturing process. To obtain the carbon composite GDLs, carbon black with polymer binder was mixed in solvent, rolled to make sheet, and finally heat-treated at $340^{\circ}C$. The performance of fuel cell using composite GDLs was changed by PTFE content. The physical properties of composite GDLs for pore, conductivity and air permeability were analyzed to compare with the variation of fuel cell performance. The conductivity of composite GDLs was very similar to carbon paper as commercial GDL but pore properties and air flux were considerably different. The porosity, PTFE content and conductivity for composite GDLs did not have an influence on the cell performance much. The increase of pore diameter and air flux led to enhance cell performance.


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