Coating on Zinc Surface to Improve the Electrochemical Behavior of Zinc Anodes for Zinc‐Air Fuel Cells |
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Authors: | Hong Shin Kim Yong Nam Jo Won Jong Lee Ki Jae Kim Chang Woo Lee |
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Affiliation: | Department of Chemical Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong‐daero, Giheung, Yongin, Gyeonggi 446‐701, Republic of Korea |
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Abstract: | The corrosion of Zn anode, associated with corrosion current and hydrogen evolution reaction, is a major reason for capacity loss and safety problems. As a way of improving the current issue, a newly coating method using difference of melting points has been attempted to synthesize anode materials and found to be highly effective. Effects of corrosion inhibitors are also investigated by diverse electrochemical techniques. The Tafel extrapolation shows the reduced corrosion current compared with that of pure Zn. ZnNi‐2 (Zn:Ni, 95 : 5 wt.%) demonstrates the hydrogen overpotential is shifted to the most negative value as ?1.7 V vs. Hg/HgO. |
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Keywords: | Corrosion Zn‐air Hydrogen evolution reaction Tafel extrapolation |
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