Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Effect of Gas Diffusion Layer on La0.8Sr0.2CoO3 Bifunctional Electrode for Oxygen Reduction and Evolution Reactions in an Alkaline Solution

알칼리용액에서 산소환원 및 발생반응에 대한 La0.8Sr0.2CoO3 전극의 기체확산층 영향

  • LOPEZ, KAREEN J. (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • YANG, JIN-HYUN (Department of Nano & Chemical Engineering, Kunsan National University) ;
  • SUN, HO-JUNG (Department of Material Science & Engineering, Kunsan National University) ;
  • PARK, GYUNGSE (Department of Chemistry, Kunsan National University) ;
  • EOM, SEUNGWOOK (Battery Research Center Korea Electrotechnology Research Institute) ;
  • RIM, HYUNG-RYUL (Fuel Cell Regional Innovation Center, Woosuk University) ;
  • LEE, HONG-KI (Fuel Cell Regional Innovation Center, Woosuk University) ;
  • SHIM, JOONGPYO (Department of Nano & Chemical Engineering, Kunsan National University)
  • 로페즈 카린 (군산대학교 나노화학공학과) ;
  • 양진현 (군산대학교 나노화학공학과) ;
  • 선호정 (군산대학교 신소재공학과) ;
  • 박경세 (군산대학교 화학과) ;
  • 엄승욱 (한국전기연구원 전지연구센터) ;
  • 임형렬 (우석대학교 수소연료전지 지역혁신센터) ;
  • 이홍기 (우석대학교 수소연료전지 지역혁신센터) ;
  • 심중표 (군산대학교 나노화학공학과)
  • Received : 2016.10.19
  • Accepted : 2016.12.30
  • Published : 2016.12.30
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Abstract

Various commercially available gas diffusion layers (GDLs) from different manufacturers were used to prepare an air electrode using $La_{0.8}Sr_{0.2}CoO_3$ perovskite (LSCP) as the catalyst for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in an alkaline solution. Various GDLs have different physical properties, such as porosity, conductivity, hydrophobicity, etc. The ORR and OER of the resulting cathode were electrochemically evaluated in an alkaline solution. The electrochemical properties of the resulting cathodes were slightly different when compared to the physical properties of GDLs. Pore structure and conductivity of GDLs had a prominent effect and their hydrophobicities had a minor effect on the electrochemical performances of cathodes for ORR and OER.

Keywords

References

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