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http://dx.doi.org/10.5229/JKES.2019.22.4.164

The Electrochemical Properties of SnO2 as Cathodes for Lithium Air Batteries  

Lee, Yoon-Ho (Department of Chemical Engineering, Keimyung University)
Park, Heai-Ku (Department of Chemical Engineering, Keimyung University)
Publication Information
Journal of the Korean Electrochemical Society / v.22, no.4, 2019 , pp. 164-171 More about this Journal
Abstract
Nano-sized $SnO_2$ powders were synthesized via a solvent thermal reaction using $SnClO_4$, NaOH, and ethylene glycol at $150^{\circ}C$. TGA, SEM, FT-IR, XRD, and Potentiostat/Galvanostat were employed to investigate the chemical and electrochemical characteristics of the synthesized $SnO_2$. The structure of $SnO_2$ was amorphous, and when heat treated at $500^{\circ}C$, it was transformed into a crystalline structure. The morphology obtained by SEM micrographs of the as-synthesized $SnO_2$ showed powder features that had diameters ranging 100 to 200 nm. The electrochemical performance of the crystalline $SnO_2$ as a Li-air battery cathode was better than that of the amorphous $SnO_2$. The specific capacity of the crystalline $SnO_2$ was at least 350 mAh/g at 10 mA/g discharge rate. However, there was some capacity loss of all the cells during the consecutive cycles. Keywords : Lithium-Air Battery.
Keywords
Lithium-Air Battery Cathode; Lithium-Air Battery; Tin Oxides;
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