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NixCo1-x(OH)2 nanosheets on carbon nanofoam paper as high areal capacity electrodes for hybrid supercapacitors

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  • Nguyen, Tuyen
  • Boudard, Michel
  • João Carmezim, M.
  • Fátima Montemor, M.

Abstract

This work reports the charge storage ability of NixCo1-x(OH)2 nanosheet-carbon nanofoam paper (CNFP) composites prepared by electrodeposition for high areal capacity supercapacitor electrodes. The NixCo1-x(OH)2 film grew through instantaneous nucleation, uniformly covered CNFP, and displayed a porous morphology composed of a nanosheet percolation network. The electrochemical response of the NixCo1-x(OH)2 films was tuned by varying the Co to Ni ratios. The optimized NixCo1-x(OH)2 stoichiometry resulted in Ni0.33Co0.67(OH)2-CNFP electrodes displaying areal capacity/capacitance values of 1.52 C cm−2/2.03 F cm−2 at 2.1 mA cm−2, resulting from the contribution of the double layer capacity of CNFP with the redox capacity of NixCo1-x(OH)2. A two electrode cell composed of CNFP as negative electrode and NixCo1-x(OH)2-CNFP as positive electrode presented a high areal capacity value of 0.73 C cm−2 at 7.2 mA cm−2.

Suggested Citation

  • Nguyen, Tuyen & Boudard, Michel & João Carmezim, M. & Fátima Montemor, M., 2017. "NixCo1-x(OH)2 nanosheets on carbon nanofoam paper as high areal capacity electrodes for hybrid supercapacitors," Energy, Elsevier, vol. 126(C), pages 208-216.
    • Handle: RePEc:eee:energy:v:126:y:2017:i:c:p:208-216
    DOI: 10.1016/j.energy.2017.03.024
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    References listed on IDEAS

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    1. 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.
    2. Hong, Wei & Wang, Jinqing & Li, Zhangpeng & Yang, Shengrong, 2015. "Fabrication of Co3O4@Co–Ni sulfides core/shell nanowire arrays as binder-free electrode for electrochemical energy storage," Energy, Elsevier, vol. 93(P1), pages 435-441.
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    Cited by:

    1. Patil, Bebi & Ahn, Suhyun & Park, Changyong & Song, Hyeonjun & Jeong, Youngjin & Ahn, Heejoon, 2018. "Simple and novel strategy to fabricate ultra-thin, lightweight, stackable solid-state supercapacitors based on MnO2-incorporated CNT-web paper," Energy, Elsevier, vol. 142(C), pages 608-616.
    2. Lamiel, Charmaine & Nguyen, Van Hoa & Hussain, Iftikhar & Shim, Jae-Jin, 2017. "Enhancement of electrochemical performance of nickel cobalt layered double hydroxide@nickel foam with potassium ferricyanide auxiliary electrolyte," Energy, Elsevier, vol. 140(P1), pages 901-911.
    3. Mei, Junfeng & Fu, Wenbin & Zhang, Zemin & Jiang, Xiao & Bu, Han & Jiang, Changjun & Xie, Erqing & Han, Weihua, 2017. "Vertically-aligned Co3O4 nanowires interconnected with Co(OH)2 nanosheets as supercapacitor electrode," Energy, Elsevier, vol. 139(C), pages 1153-1158.

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