Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

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  • ReceivedAug 24, 2017
  • AcceptedSep 26, 2017
  • PublishedNov 16, 2017


本文通过简便的溶剂热法成功制备了在碳纤维布上原位生长的镍铜层状双金属氢氧化物纳米片阵列. 与纯的氢氧化镍材料相比, 铜的引入极大地增强了其在超级电容器应用方面的各项电化学性能, 包括超过50%的比电容容量的提高(在充放电电流密度为0.5 A g–1时其比电容达到1953.5 F g–1)和更高的倍率性能(在充放电电流密度为5 A g–1时比电容的保持率为75%). 这些优异的性能是因为镍铜双金属层状氢氧化物具有更高的导电性和更快的界面电荷迁移率. 本文的研究工作为有效利用地球含量丰富的材料进一步增强基于层状双金属氢氧化物的超级电容器电极性能提供了新的研究思路和方法.

Funded by

Queensland University of Technology(QUT)


This work was supported by Queensland University of Technology (QUT) for Postgraduate Research Award scholarships (QUTPRA). The data were obtained at the Central Analytical Research Facility (CARF) operated by the Institute for Future Environments, QUT. Access to CARF is supported by generous funding from the Science and Engineering Faculty (QUT).

Interest statement

The authors declare that they have no conflict of interest.

Contributions statement

Wang T and Wang H designed the project and the experiments. Wang T and Zhang S performed the experiments. Wang T wrote the paper with support from Wang H. All authors contributed to the general discussion.

Author information

Teng Wang is a PhD candidate at the School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Australia, under the supervision of A/Prof. Hongxia Wang. His current research focuses on the fabrication of high performance nanomaterials for renewable energy conversion and storage devices.

Hongxia Wang is an associate professor and ARC Future Fellow at Queensland University of Technology, Australia. Her main research interest is on development of new routes for low cost solar cells and energy storage devices- work that includes perovskite solar cells, thin film solar cells using earth abundant materials and supercapacitors.


Supplementary information

Experimental detail and supplementary data are available in the online version of the paper.


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  • Figure 1

    (a) FESEM image of bare CFC; FESEM images (b, c), TEM images (d), and STEM element distribution images for Cu (e) and Ni (f) of NiCuLDH(10-10); the inset of (c) is the enlarged FESEM image and the inset in (d) is the SAED pattern of NiCuLDH(10-10).

  • Figure 2

    (a) XRD patterns of bare CFC, NiLDH, and NiCuLDH (10-10); HRXPS plots of Ni 2p (b) and O 1s (c) of NiLDH and NiCuLDH(10-10); and HRXPS plot of Cu 2p (d) of NiCuLDH(10-10).

  • Figure 3

    CV (a) and CDC plots (b) of NiLDH and NiCuLDH with different Ni/Cu ratios; CV at different scan rates (c) and GCD plots at different current densities (d) of NiCuLDH(7-10); capacitance (e) and EIS (f) comparison between NiLDH and NiCuLDH with different Ni/Cu ratios; the inset in (f) is the equivalent circuit.

  • Table 1   Comparison of electrochemical performance of as-prepared NiCuLDH with the materials reported in literature

    Active materials

    Voltage window (V)

    Specific capacitance

    Rate capability

    Cyclic stability




    602 F g−1 at 0.2 A g−1 in1 mol L−1 KOH

    53% at 10 A g−1

    89% at 5 A g−1after 5000 cycles


    Cu(OH)2 nanorods


    1.747 F cm−2 at 2 mA cm−2 in5 mol L−1 NaOH

    88.3% at 20 mA cm−2

    97.3% after 5000cycles


    Cu(OH)2 nanobelt arrays


    217 mF cm−2 at 0.5 mA cm−2 in 1 mol L−1 NaOH

    61 % at 2 mA cm−2

    90% after 3000cycles at 2 mA cm−2


    Cu(OH)2CO3 nanowires


    971 F g−1 at 1 A g−1 in6 mol L−1 KOH

    69.5% at 10 A g−1

    91.5% after 3000cycles at 5 A g−1


    Cl intercalated α-Ni(OH)2


    1494 F g−1 at 1 A g−1 in1 mol L−1 KOH

    30% at 8 A g−1

    81.9% after 500cycles at 4 A g−1




    880 F g−1 at 2 A g−1 in1 mol L−1 NaOH

    54% at 20 A g−1

    60% after 500cycles at 5 A g−1




    1953.5 F g−1 at 0.5 A g−1 in2 mol L−1 KOH

    75% at 5 A g−1

    35% after 500cycles at 5 A g−1

    This work

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