Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Effect of Pretreatments on Graphene Coated Bipolar Plate of PEMFC on Electrochemical

전처리가 그래핀을 코팅한 고체고분자 연료전지 분리판의 전기화학적 특성에 미치는 영향

  • Cha, Seong-Yun (School of Advanced Materials Engineering, Kookmin University) ;
  • Lee, Jae-Bong (School of Advanced Materials Engineering, Kookmin University)
  • 차성윤 (국민대학교 공과대학 신소재 공학부) ;
  • 이재봉 (국민대학교 공과대학 신소재 공학부)
  • Received : 2014.12.03
  • Accepted : 2014.12.26
  • Published : 2014.12.31
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Abstract

Effect of pretreatments on the graphene coated bipolar plate of proton exchange membrane fuel cell(PEMFC) was investigated in simulated environments for PEMFC by using electrochemical measurement techniques. Interfacial contact resistance(ICR) between the graphene coated bipolar plate and the gas diffusion layer(GDL) was measured. The value of ICR decreased with an increase in compaction stress($20N/cm^2{\sim}220N/cm^2$). ICR of graphene coated bipolar plate was higher than that of bare 316L stainless steel. However, Potentiodynamic measurement results showed that the corrosion resistance of graphene coated bipolar plate was higher than that of bare 316L stainless steel. $H_2SO_4$ acid pretreatment was the most effective among various pretreatments. The lowest ICR and the corrosion current density were obtained when using $H_2SO_4$ solution pretreatment.

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References

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Cited by

  1. Evaluation of Electrochemical Characteristics on Graphene Coated Austenitic and Martensitic Stainless Steels for Metallic Bipolar Plates in PEMFC Fabricated with Hydrazine Reduction Methods vol.15, pp.2, 2016, https://doi.org/10.14773/cst.2016.15.2.92