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Ni(OH)2/RGO nanosheets constituted 3D structure for high-performance supercapacitors

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Abstract

Ni(OH)2/reduced graphene oxide (RGO) nanosheets constituted 3D structure have been successfully prepared via a facile two-step method. Through this method, Ni(OH)2 can uniformly grow on both side of RGO nanosheets and the RGO nanosheets are partially overlapped, thereby forming a 3D structure. The Ni(OH)2/RGO composite delivers much higher specific capacitance and improved rate capability than the pure Ni(OH)2 sample and the Ni(OH)2–RGO mixture. A specific capacitance up to 1143 F g−1 at 1 A g−1 is attained, 64 % of which can still be retained after 20 times increase in current density. In addition, excellent cycling stability can also be obtained, and 97 % of the capacitance can still be retained after 1500 charge and discharge cycles.

Graphical Abstract

Ni(OH)2/RGO nanosheets constituted 3D structure have been successfully prepared, which show superior specific capacitance with improved rate capability and long cycling stability.

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Authors and Affiliations

  1. College of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, China

    Lan Xu, Haichao Chen & Kangying Shu

  2. Hangzhou Academy of Machinery Science and Technology, Hangzhou, 310001, China

    Lan Xu

Authors
  1. Lan Xu
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  2. Haichao Chen
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  3. Kangying Shu
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Correspondence to Haichao Chen.

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Xu, L., Chen, H. & Shu, K. Ni(OH)2/RGO nanosheets constituted 3D structure for high-performance supercapacitors. J Sol-Gel Sci Technol 77, 463–469 (2016). https://doi.org/10.1007/s10971-015-3876-0

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  • DOI: https://doi.org/10.1007/s10971-015-3876-0

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