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http://dx.doi.org/10.5229/JKES.2009.12.4.342

Preparation and Electrochemical Properties of Pr1-x (Sr, Ca)xCoO3 Cathode Materials for Zinc Air Batteries  

Heo, Sang-Hun (Korea Electrotechnology Research Institute)
Eom, Seung-Wook (Korea Electrotechnology Research Institute)
Kim, Hyun-Soo (Korea Electrotechnology Research Institute)
Publication Information
Journal of the Korean Electrochemical Society / v.12, no.4, 2009 , pp. 342-348 More about this Journal
Abstract
Zn/Air secondary batteries are high energy density type and environment-friendly. Also, they have safer properties than batteries of other type by low manufacturing cost and using the electrolyte solution. But, they have a weak concerning large output discharge. Oxygen evolution reaction(OER) and oxgen reduction reaction(ORR) in aqueous solution make a result of a decrease of cell efficiency and life span. Therefore, to minimize the voltage drop from between OCV and charge/discharge voltage is key point. The problem should be solved through developing catalysts of high efficiency. In this study, we synthesized $Pr_{1-x}(Sr,\;Ca)_x\;CoO_3$ powders by citric method and then measured physical characteristics of each powder by XRD, SEM, TGA etc. We examined its electrochemical properties by the cathodic polarization, anodic polarization and cyclic voltammogram. We achieved results that new catalysts showed better performances than existing $La_{1-x}Sr_xCoO_3$, $La_{1-x}Ca_xCoO_3$, ect. catalysts prepared in our lab.
Keywords
Praseodymium; Catalyst; Cathode; Perovskite; Zinc air battery;
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Times Cited By KSCI : 2  (Citation Analysis)
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