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Microspherical ZnO synthesized from a metal-organic precursor for supercapacitors

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Abstract

In this paper, ZnO microspheres, which are composed of irregular nanoparticles, have been synthesized successfully from a metal-organic precursor. The average diameter is about 3.5 μm and the specific surface area is 7.53 m2 g−1. Measured by electrochemical tests as electrode materials for supercapacitors, the ZnO powders show high specific capacitances (1017.5 Fg−1 at 5 Ag−1 and 562.5 Fg−1 at 50 Ag−1, respectively) and excellent cycling stability (the specific capacitance was kept at 631.2 Fg−1 and 89.2 % retention after 3000 cycles at 18 Ag−1). These results show that the microspherical ZnO could be a potential electrode material for supercapacitors.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51274130 and 51074096) and the Program for Changjiang Scholars and Innovative Research Team in University (IRT13026).

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, 410083, China

    Guoyong Huang

  2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China

    Guoyong Huang, Wenjing Zhang, Shengming Xu & Yue Yang

  3. Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing, 102249, China

    Wenjing Zhang & Yujing Li

  4. Beijing Key Lab of Fine Ceramics, Tsinghua University, Beijing, 100084, China

    Shengming Xu

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  1. Guoyong Huang
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  2. Wenjing Zhang
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  5. Yue Yang
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Correspondence to Shengming Xu or Yujing Li.

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Huang, G., Zhang, W., Xu, S. et al. Microspherical ZnO synthesized from a metal-organic precursor for supercapacitors. Ionics 22, 2169–2174 (2016). https://doi.org/10.1007/s11581-016-1745-7

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  • DOI: https://doi.org/10.1007/s11581-016-1745-7

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