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Stable zinc anodes by in situ polymerization of conducting polymer to conformally coat zinc oxide particles

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Abstract

Polypyrrole (PPy) was directly synthesized on the surface of zinc oxide (ZnO) particles by in situ polymerization, resulting in a composite material which avoids direct contact with electrolyte and restricts the diffusion of discharge products. The microstructure of polymer-coated ZnO was observed by scanning electron microscopy and transmission electron microscopy (TEM) tests, and TEM image clearly confirms the existence of a thin layer of polymer film (about 10 nm) around ZnO particles. Anodic polarization curves and impedance spectra measurements indicate that PPy-coated ZnO possesses higher electrochemical activity compared with pure ZnO. The electrodes prepared from PPy-coated ZnO exhibit remarkably superior cycle stability, while the blank electrodes without polymer coating suffer from rapid capacity fading.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Central South University, South Lushan Road, Changsha, 410083, China

    Wengang Gan, Debi Zhou, Jing Zhao & Liang Zhou

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  1. Wengang Gan
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  2. Debi Zhou
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  3. Jing Zhao
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  4. Liang Zhou
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Correspondence to Debi Zhou.

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Gan, W., Zhou, D., Zhao, J. et al. Stable zinc anodes by in situ polymerization of conducting polymer to conformally coat zinc oxide particles. J Appl Electrochem 45, 913–919 (2015). https://doi.org/10.1007/s10800-015-0833-0

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  • DOI: https://doi.org/10.1007/s10800-015-0833-0

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