Core-shell nanostructured ZnO@CoS arrays as advanced electrode materials for high-performance supercapacitors

Ding, Shixiang; Li, Xiaoyan; Jiang, Xiaoli; Hu, Qiang; Yan, Yuqi; Zheng, Qiaoji; Lin, Dunmin

doi:10.1016/j.electacta.2020.136711

Cited by 38 publications

(15 citation statements)

References 59 publications

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“…In cell voltage of 1.5 V, the asymmetric supercapacitor exhibits maximum energy density of 62.57 W h kg −1 at a power density of 71 1.28 W kg −1 and, at 16,985.55 W kg −1 (maximum power density), it delivers an energy density of 16.04 W h kg −1 . Ding et al [ 157 ] anchored binder-free tin oxide nanosheets on nickel foam by a one-step hydrothermal method, and then CoS was deposited on the ZnO surface by electrodeposition. At a current density of 3 mA cm −2 , ZnO@CoS shows a high specific capacity of 898.9 C g −1 , while specific capacity of pristine ZnO and ZnO precursor are 614.4 C g −1 and 530.6 C g −1 , respectively.…”

Section: Tmos-based Electrode Materialsmentioning

confidence: 99%

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

et al. 2021

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In the past decades, the energy consumption of nonrenewable fossil fuels has been increasing, which severely threatens human life. Thus, it is very urgent to develop renewable and reliable energy storage devices with features of environmental harmlessness and low cost. High power density, excellent cycle stability, and a fast charge/discharge process make supercapacitors a promising energy device. However, the energy density of supercapacitors is still less than that of ordinary batteries. As is known to all, the electrochemical performance of supercapacitors is largely dependent on electrode materials. In this review, we firstly introduced six typical transition metal oxides (TMOs) for supercapacitor electrodes, including RuO2, Co3O4, MnO2, ZnO, XCo2O4 (X = Mn, Cu, Ni), and AMoO4 (A = Co, Mn, Ni, Zn). Secondly, the problems of these TMOs in practical application are presented and the corresponding feasible solutions are clarified. Then, we summarize the latest developments of the six TMOs for supercapacitor electrodes. Finally, we discuss the developing trend of supercapacitors and give some recommendations for the future of supercapacitors.

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Section: Tmos-based Electrode Materialsmentioning

confidence: 99%

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

et al. 2021

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“…Transition metal oxides, as one class of typical pseudocapacitor materials, such as RuO 2 , [ 11‐12 ] NiO, [ 13 ] Cu 2 O, [ 14 ] MnO 2 , [ 15 ] Co 3 O 4 , [ 16 ] ZnO, [ 17‐19 ] NiCoO 2 , [ 20 ] etc ., have attracted tremendous attentions. Among the various transition metal oxides, ZnO exhibits direct band gap, which may promote a quicker electrochemical response and a higher power density.…”

Section: Background and Originality Contentmentioning

confidence: 99%

A Novel Strategy of Multi‐element Nanocomposite Synthesis for High Performance ZnO‐CoSe₂ Supercapacitor Material Development

Chen

et al. 2021

Chin. J. Chem.

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Main observation and conclusion Developing multi‐element composites is a promising way for high performance supercapacitor material development, and simplifying the synthesis steps is critical for reducing the preparation costs and successful promotion of the materials. A novel one‐step selective reaction strategy is developed, and successfully used to prepare four‐element ZnO‐CoSe2 (ZOCS) nano‐spherical composites, to be used as supercapacitor materials. Started form nano‐spherical glycerate templates, under the optimal synthesis condition, the obtained ZOCS‐0.125 electrode material exhibits a specific capacitance of 450.7 F/g at 1 A/g and a good rate performance by keeping 76.8% capacitance at 20 A/g. Moreover, the ZOCS‐0.125 electrode exhibits excellent cycle stability of 114.9% capacitance retention after 5000 cycles at 10 A/g. An asymmetric supercapacitor assembled by ZOCS‐0.125 and activated carbon electrodes delivers an energy density of 22.35 Wh/kg at 825 W/kg, and a cycle stability of 105.6% capacitance retention after 5000 cycles. This work not only shows the good potential of the facilely prepared ZnO‐CoSe2 composite electrode material, but also demonstrates a new strategy for low cost and high performance multielement composite material development, that can be used in a wide range of applications.

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“…The electrolyte employed was a 3 M KOH homogeneous solution. Cyclic voltammetry measurements were performed at various scan rates (10,20,30,40,50,60,70,80,90, and 100 mV•s −1 ) in a potential range between −0.5 and 0.6 V. Equation (1) from galvanostatic charge-discharge analysis was used to calibrate the specific capacity of the synthesized nanocomposite, where C S is the specific capacity in C•g −1 , I denotes the discharge current in A, ∆t is the discharge time difference in s, and m denotes the mass of the electroactive material in g.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…Moreover, to benefit from the desirable thermal stability and electrochemical conductivities of CoS 2 and the excellent capacity of ZnO, researchers have turned to promising composite materials for SCs [20]. There are some drawbacks of ZnO such as poor electronic conductivity and inadequate active sites, which reduce the electrode capacity; this can also be addressed by combining ZnO with CoS 2 .…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Coral Reef-Like ZnO/CoS2 Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors

et al. 2021

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Nanocomposite electrodes receive much attention because of their excellent energy storage nature. Electrodes for supercapacitors have come a major source of interest. In this pursuit, the current work elucidates binder-free coral reefs resembling ZnO/CoS2 nanoarchitectures synthesized on the surface of Ni foams employing the cost-effective hydrothermal route. The Zno/CoS2 nanocomposite demonstrated excellent battery-type behavior, which can be employed for supercapcitor application. Various analyses were carried out in the current study, such as X-ray diffraction and high-resolution scanning electron microscopy, which allowed defining the crystalline nature and morphology of surface with ZnO/CoS2 nanoarchitectures. Electrochemical measures such as cyclic voltammetry, galvanostatic charge discharge, and potentiostatic impedance spectroscopy confirmed the battery-type behavior of the material. The synthesized precursors of binder-free ZnO/CoS2 nanostructures depicted an excellent specific capacity of 400.25 C·g−1 at 1 A·g−1, with a predominant cycling capacity of 88. 2% and retention holding of 68% at 10 A·g−1 and 2 A·g−1, even after 4000 cycles, representing an improvement compared to the pristine ZnO and CoS2 electroactive materials. Therefore, the electrochemical and morphological analyses suggest the excellent behavior of the ZnO/CoS2 nanoarchitectures, making them promising for supercapacitors.

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Core-shell nanostructured ZnO@CoS arrays as advanced electrode materials for high-performance supercapacitors

Cited by 38 publications

References 59 publications

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

A Novel Strategy of Multi‐element Nanocomposite Synthesis for High Performance ZnO‐CoSe₂ Supercapacitor Material Development

Facile Synthesis of Coral Reef-Like ZnO/CoS2 Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors

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Core-shell nanostructured ZnO@CoS arrays as advanced electrode materials for high-performance supercapacitors

Cited by 38 publications

References 59 publications

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

A Novel Strategy of Multi‐element Nanocomposite Synthesis for High Performance ZnO‐CoSe2 Supercapacitor Material Development

Facile Synthesis of Coral Reef-Like ZnO/CoS2 Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors

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A Novel Strategy of Multi‐element Nanocomposite Synthesis for High Performance ZnO‐CoSe₂ Supercapacitor Material Development