KEPCO Journal on Electric Power and Energy

Korea Electric Power Corporation (한국전력공사)
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The Effect of sGO Content in sPEEK/sGO Composite Membrane for Unitized Regenerative Fuel Cell

일체형 재생연료전지 적용을 위한 sGO 함량 변화에 따른 sGO/sPEEK 복합막의 특성 평가

  • Jung, Ho-Young (Department of Environment and Energy Eng., Chonnam National Univ.) ;
  • Kim, Min-Woo (Department of Environment and Energy Eng., Chonnam National Univ.) ;
  • Lim, Ji-Hun (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Choi, Jin H. (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Roh, Sung-Hee (College of General Education, Chosun University)
  • Received : 2016.02.03
  • Accepted : 2016.03.14
  • Published : 2016.03.30
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Abstract

Polymer electrolyte membrane for unitized regenerative fuel cells requires high proton conductivity, high dimensional stability, low permeability, and low cost. However, DuPont's Nafion which is a commercial polymer electrolyte membrane has high permeability, high cost, and decreasing proton conductivity and dimensional stability over $80^{\circ}C$. To address these problems, sulfonated poly ether ether ketone (sPEEK) which is a low cost hydrocarbon polymer is selected as matrix polymer for the preparation of polymer electrolyte membrane. In addition, composite membrane with improved proton conductivity and dimensional stability is prepared by introducing sulfonated graphene oxide (sGO). The fundamental properties of polymer electrolyte membranes are analyzed by investigating membrane's water content, dimensional stability, proton conductivity, and morphology. The cell test is conducted to consider the possibility of application of sPEEK/sGO composite membrane for an unitized regenerative fuel cell.

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References

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  1. Synthesis and Characterization of Sulfonated Graphene Oxide Reinforced Sulfonated Poly (Ether Ether Ketone) (SPEEK) Composites for Proton Exchange Membrane Materials vol.11, pp.4, 2018, https://doi.org/10.3390/ma11040516