Advances in Energy Research

  • 제8권4호
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  • Pages.253-264
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  • 2022
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  • 2287-6316(pISSN)
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  • 2287-6324(eISSN)
테크노프레스 (Techno-Press)
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Analysis of activation, ohmic, and concentration losses in hydrogen fuelled PEM fuel cell

  • Rohan Kumar (Department of Energy Science and Engineering, Indian Institute of Technology Delhi) ;
  • K.A Subramanian (Department of Energy Science and Engineering, Indian Institute of Technology Delhi)
  • 투고 : 2022.08.17
  • 심사 : 2022.09.07
  • 발행 : 2022.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper deals with the effects of design (active area, current density, membrane conductivity) and operating parameters (temperature, relative humidity) on the performance of hydrogen-fuelled proton exchange membrane (PEM) fuel cell. The design parameter of a PEM fuel cell with the active area of the single cell considered in this study is 25 cm2 (5 × 5). The operating voltage and current density of the fuel cell were 0.7 V and 0.5 A/cm2 respectively. The variations of activation voltage, ohmic voltage, and concentration voltage with respect to current density are analyzed in detail. The membrane conductivity with variable relative humidity is also analyzed. The results show that the maximum activation overpotential of the fuel cell was 0.4358 V at 0.21 A/cm2 due to slow reaction kinetics. The calculated ohmic and concentrated overpotential in the fuel cell was 0.01395 V at 0.76 A/cm2 and 0.027 V at 1.46 A/cm2 respectively.

키워드

참고문헌

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