Hierarchical Ni–Co–Mn hydroxide hollow architectures as high-performance electrodes for electrochemical energy storage

Wei, Chengzhen; Cheng, Cheng; Wang, Kaimin; Li, Xiaochong; Xiao, Hecong; Yao, Qiaofei

doi:10.1039/d0ra10377b

Cited by 14 publications

(1 citation statement)

References 47 publications

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“…For example, Wei et al fabricated CNT/Co 3 S 4 @NiCo LDH composites for hybrid supercapacitors [8]. In most instances, hybrid supercapacitors combine a supercapacitor-type electrode (such as carbon materials) with a battery-type electrode (such as transition metal oxides/hydroxides) into a single device [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CNTs/CoNiFe-LDH Nanocomposite with High Specific Surface Area for Asymmetric Supercapacitor

et al. 2021

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Ternary layered double hydroxide (LDH) materials have shown promising application in hybrid supercapacitors. However, the low electrical conductivity of LDHs is still a restriction to their performance. Herein, carbon nanotubes/cobalt–nickel–iron LDH (CNTs/CoNiFe-LDH) hybrid material was prepared by a one-step hydrothermal approach for the first time. The presence of CNTs improved the conductivity and surface area of the electrode, leading to an enhanced electrochemical performance. The CNTs/CoNiFe-LDH hybrid electrode exhibited high specific capacity 170.6 mAh g−1 at a current density of 1 A g−1, with a capacity retention of 75% at 10 A g−1. CNTs/CoNiFe-LDH//AC asymmetric supercapacitor (ASC) was also assembled, which had high specific capacitance (96.1 F g−1 at the current density of 1 A g−1), good cycling stability (85.0% after 3000 cycles at 15 A g−1) and high energy density (29.9 W h kg−1 at the power density of 750.5 W kg−1). Therefore, the CNTs/CoNiFe-LDH material could be used for hybrid supercapacitor electrodes.

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