전처리가 그래핀을 코팅한 고체고분자 연료전지분리판의 전기화학적 특성에 미치는 영향
Effect of Pretreatments on Graphene Coated Bipolar Plate of PEMFC on Electrochemical
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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/cm2~220N/cm2). ICR ofgraphene coated bipolar plate was higher than that of bare 316L stainless steel. However, Potentiodynamic measurementresults showed that the corrosion resistance of graphene coated bipolar plate was higher than that of bare316L stainless steel. H2SO4 acid pretreatment was the most effective among various pretreatments. The lowestICR and the corrosion current density were obtained when using H2SO4 solution pretreatment.
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/cm2~220N/cm2). ICR ofgraphene coated bipolar plate was higher than that of bare 316L stainless steel. However, Potentiodynamic measurementresults showed that the corrosion resistance of graphene coated bipolar plate was higher than that of bare316L stainless steel. H2SO4 acid pretreatment was the most effective among various pretreatments. The lowestICR and the corrosion current density were obtained when using H2SO4 solution pretreatment.
참고문헌 (11)
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