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http://dx.doi.org/10.7316/KHNES.2016.27.3.276

Effect of Conductive Additives in La0.8Sr0.2MnO3 Perovskite Electrodes for Oxygen Reduction and Evolution in Alkaline Solution  

SHIM, JOONGPYO (Dpartment of Nano & Chemical Engineering, Kunsan National University)
LOPEZ, KAREEN J. (Dpartment of Nano & Chemical Engineering, Kunsan National University)
YANG, JIN-HYUN (Dpartment of Nano & Chemical Engineering, Kunsan National University)
SUN, HO-JUNG (Dpartment of Material Science & Engineering, Kunsan National University)
PARK, GYUNGSE (Dpartment of Chemistry, Kunsan National University)
EOM, SEUNGWOOK (Battery Research Center Korea Electrotechnology Research Institute)
LEE, HONG-KI (Fuel Cell Regional Innovation Center, Woosuk University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.27, no.3, 2016 , pp. 276-282 More about this Journal
Abstract
The effects of conductive additives in a $La_{0.8}Sr_{0.2}MnO_3$ perovskite bifunctional electrode for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) were investigated in an alkaline solution. Highly porous carbon black (CB) and Ni powder were added to the bifunctional electrodes as conductive additives. The surface morphologies of electrodes containing CB and Ni were observed by scanning electron microscopy (SEM). The current densities for both ORR and OER were changed by the addition of CB. The conductive additive changed physical properties of bifunctional electrodes such as the sheet conductance, gas permeability and contact angle. It was observed that the air permeability of electrode was most effective to enhance the currents for ORR and OER.
Keywords
Perovskite; $La_{0.8}Sr_{0.2}MnO_3$; electrode; conductive additive; oxygen reduction; oxygen evolution;
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Times Cited By KSCI : 3  (Citation Analysis)
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