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http://dx.doi.org/10.7316/KHNES.2016.27.6.677

Effect of Gas Diffusion Layer on La0.8Sr0.2CoO3 Bifunctional Electrode for Oxygen Reduction and Evolution Reactions in an Alkaline Solution  

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)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.27, no.6, 2016 , pp. 677-684 More about this Journal
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
Perovskite; $La_{0.8}Sr_{0.2}CoO_3$; catalys; gas diffusion layer; oxygen reduction; oxygen evolution;
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