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Amorphous nickel hydroxide nanospheres with ultrahigh capacitance and energy density as electrochemical pseudocapacitor materials

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  • H. B. Li

    (State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University)

  • M. H. Yu

    (MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University)

  • F. X. Wang

    (MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University)

  • P. Liu

    (State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University)

  • Y. Liang

    (State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University)

  • J. Xiao

    (State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University)

  • C. X. Wang

    (State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University)

  • Y. X. Tong

    (MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University)

  • G. W. Yang

    (State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Physics and Engineering, Sun Yat-sen University)

Abstract

Among numerous active electrode materials, nickel hydroxide is a promising electrode in electrochemical capacitors. Nickel hydroxide research has thus far focused on the crystalline rather than the amorphous phase, despite the impressive electrochemical properties of the latter, which includes an improved electrochemical efficiency due to disorder. Here we demonstrate high-performance electrochemical supercapacitors prepared from amorphous nickel hydroxide nanospheres synthesized via simple, green electrochemistry. The amorphous nickel hydroxide electrode exhibits high capacitance (2,188 F g−1), and the asymmetric pseudocapacitors of the amorphous nickel hydroxide exhibit high capacitance (153 F g−1), high energy density (35.7 W h kg−1 at a power density of 490 W kg−1) and super-long cycle life (97% and 81% charge retentions after 5,000 and 10,000 cycles, respectively). The integrated electrochemical performance of the amorphous nickel hydroxide is commensurate with crystalline materials in supercapacitors. These findings promote the application of amorphous nanostructures as advanced electrochemical pseudocapacitor materials.

Suggested Citation

  • H. B. Li & M. H. Yu & F. X. Wang & P. Liu & Y. Liang & J. Xiao & C. X. Wang & Y. X. Tong & G. W. Yang, 2013. "Amorphous nickel hydroxide nanospheres with ultrahigh capacitance and energy density as electrochemical pseudocapacitor materials," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2932
    DOI: 10.1038/ncomms2932
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    Cited by:

    1. Sun, Zhao & Han, Zhaoteng & Liu, Huan & Wu, Dezhen & Wang, Xiaodong, 2021. "Nanoflaky nickel-hydroxide-decorated phase-change microcapsules as smart electrode materials with thermal self-regulation function for supercapacitor application," Renewable Energy, Elsevier, vol. 174(C), pages 557-572.
    2. Tang, YanRu & Cheng, Baohai, 2016. "3D self-supported hierarchical NiCo architectures with integrated capacitive performance and enhanced electronic conductivity for supercapacitors," Energy, Elsevier, vol. 112(C), pages 755-761.
    3. Rong, Qing & Long, Lu-Lu & Zhang, Xing & Huang, Yu-Xi & Yu, Han-Qing, 2015. "Layered cobalt nickel silicate hollow spheres as a highly-stable supercapacitor material," Applied Energy, Elsevier, vol. 153(C), pages 63-69.
    4. Parveen, Shama & Kavyashree, & Sharma, Suneel Kumar & Pandey, S.N., 2021. "High performance solid state symmetric supercapacitor based on reindeer moss-like structured Al(OH)3/MnO2/FeOOH composite electrode for energy storage applications," Energy, Elsevier, vol. 224(C).

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