H2S Poisoning Effect and Recovery Methods of Polymer Electrolyte Membrane Fuel Cell

황화수소 피독이 고분자전해질 연료전지에 미치는 영향과 회복기법

  • Chun, Byungdo (School of Chemical Engineering, University of Ulsan) ;
  • Kim, Junbom (School of Chemical Engineering, University of Ulsan)
  • 천병도 (울산대학교 화학공학부) ;
  • 김준범 (울산대학교 화학공학부)
  • Received : 2016.11.28
  • Accepted : 2017.01.19
  • Published : 2017.02.01


The performance of polymer electrolyte membrane fuel cell (PEMFC) could be deteriorated when fuel contains contaminants such as carbon monoxide (CO) or hydrogen sulfide ($H_2S$). Generally, $H_2S$ is introduced in hydrogen by steam reforming of hydrocarbon which has mercaptan as odorant. $H_2S$ poisoning effect on PEMFC performance was examined on this study. Pure hydrogen injection, voltage cycling and water circulation methods were compared as performance recovery methods. The PEMFC performance was analyzed using electrochemical methods such as polarization curve, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). Pure hydrogen injection and voltage cycling methods showed low recovery ratio, however, water circulation method showed high recovery ratio over 95%. Because anode was directly poisoned by $H_2S$, anode water circulation showed higher recovery ratio compared to the other methods. Water circulation method was developed to recover PEMFC performance from $H_2S$ poisoning. This method could contribute to PEMFC durability and commercialization.


Polymer electrolyte membrane fuel cell;Hydrogen sulfide;Poisoning;Recovery


Supported by : 울산대학교


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