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Materials 2019, 12(7), 1193; https://doi.org/10.3390/ma12071193

Ordered ZnO/Ni Hollow Microsphere Arrays as Anode Materials for Lithium Ion Batteries

Department of Materials Engineering, Taizhou University, Taizhou 318000, China
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Received: 27 March 2019 / Revised: 9 April 2019 / Accepted: 10 April 2019 / Published: 11 April 2019
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Abstract

Well-designed nanostructures are very important for the electrochemical performance of lithium-ion electrode materials. In order to improve the electrochemical performance of ZnO-based anode materials, ZnO/Ni composite film, assembled by ordered hollow microsphere arrays, is designed and fabricated by means of magnetron sputtering technique using a colloidal crystal template composed of a monolayer of ordered polystyrene (PS) microspheres. The ordered hollow microsphere structure as well as the constituent Ni component of the ZnO/Ni film show major advantages of homogenizing electrode reactions, enhancing electrode reaction kinetics and accommodating volume change of active materials, so they can reduce electrode polarization and stabilize electrode structure. Consequently, the resulting ordered ZnO/Ni hollow microspheres arrays deliver an initial charge capacity of 685 mAh g−1, an initial coulombic efficiency of 68%, and a capacity retention rate of 69% after 100 cycles, all of which are higher than those of the pure ZnO film. These results show progress in developing more stable ZnO-based anode materials for lithium ion batteries. View Full-Text
Keywords: Zinc oxide; hollow microsphere; nanocomposite; anode materials; lithium ion battery Zinc oxide; hollow microsphere; nanocomposite; anode materials; lithium ion battery
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Shen, S.; Zhong, W.; Huang, X.; Lin, Y.; Wang, T. Ordered ZnO/Ni Hollow Microsphere Arrays as Anode Materials for Lithium Ion Batteries. Materials 2019, 12, 1193.

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