Comparative investigation of hollow mesoporous NiCo2S4 ellipsoids with enhanced pseudo-capacitances towards high-performance asymmetric supercapacitors

Hou, Linrui; Bao, Ruiqi; Chen, Zhiyi; Rehan, Muhammad; Tong, Liuniu; Pang, Gang; Cheng, Yuan

doi:10.1016/j.electacta.2016.08.038

Cited by 119 publications

(48 citation statements)

References 33 publications

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“…Figure 9a, are nearly symmetric with respect to the zero-current baseline in a stable electrochemical window with a upper potential limit of 1.5 V, where no oxygen evolution can be observed. Furthermore, with the SPD increasing up to ≈2336 W kg −1 (discharging time ≈47 s), a SED as high as ≈30.2 Wh kg −1 still can be remained with a sixfold increase in discharging current, which is better than other NCS-based hybrid ESs reported in the literature, [18,19,31,[49][50][51][52][53] as selectively marked in Figure 10. Figure 9b depicts the typical CP plots of the hybrid supercapacitor at various current rates ranging from 0.5 to 10.0 A g −1 .…”

Section: Electrochemical Performance Of the Ncs-mds//ac Hybrid Supercmentioning

confidence: 85%

Uniform Hollow Mesoporous Nickel Cobalt Sulfide Microdumbbells: A Competitive Electrode with Exceptional Gravimetric/Volumetric Pseudocapacitance for High‐Energy‐Density Hybrid Superapacitors

Hou

Bao

Rehan

et al. 2017

Adv Elect Materials

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In this contribution, a facile two‐step hydrothermal protocol to prepare hierarchical uniform hollow mesoporous NiCo2S4 microdumbbells (NCS‐MDs) for advanced supercapacitors is developed. Physicochemical investigations reveal that the as‐obtained NCS‐MDs with mesoporous channels in nanoshells possess high‐content Co(III) and Ni(III) species, large surface area (≈80 m2 g−1)/pore volume (≈0.12 m3 g−1), and high tap density (≈0.8 g cm−3). When evaluated as an attractive pseudocapacitive electrode, the unique NCS‐MDs with mass loading of 7 mg cm−2 exhibit remarkable gravimetric/volumetric specific capacitances of ≈912 F g−1 (≈729 F cm−3) at 3 A g−1, and even ≈767 F g−1 (≈613 F cm−3) at high current density of 10 A g−1. Additionally, capacitive degradations of ≈13% and ≈18% are observed over 5000 continous cycles at current rates of 6 and 10 A g−1, respectively. Furthermore, a high‐energy‐density hybrid device is fabricated by using hollow NCS‐MDs and biomass‐derived activated carbon as positive and negative electrodes, respectively, and delivers striking energy density of ≈35.4 Wh kg−1 at power density of ≈381.2 W kg−1, and excellent electrochemical stability at various rates over 11 000 consecutive cycles. These fascinating features strongly highlight that the as‐resulted hollow mesoporous NCS‐MDs could be highly anticipated as a promising electrode platform for next‐generation hybrid supercapacitors.

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Section: Electrochemical Performance Of the Ncs-mds//ac Hybrid Supercmentioning

confidence: 85%

Uniform Hollow Mesoporous Nickel Cobalt Sulfide Microdumbbells: A Competitive Electrode with Exceptional Gravimetric/Volumetric Pseudocapacitance for High‐Energy‐Density Hybrid Superapacitors

Hou

Bao

Rehan

et al. 2017

Adv Elect Materials

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Section: Synthesis and Novel Properties Of Ncs Nanostructures In Scsmentioning

confidence: 99%

NiCo₂S₄ Materials for Supercapacitor Applications

Gao

Huang

2017

Chemistry An Asian Journal

132

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Cobalt-nickel sulfide (NiCo S ) shows extensive potential for innovative photoelectronic and energetic materials owing to distinctive physical and chemical properties. In this review, representative strategies for the fabrication and application of NiCo S and composite nanostructures are outlined for supercapacitors, with the aim of promoting the development of NiCo S and their composites in the supercapacitor field through an analysis and comparison of diverse nanostructures. A brief introduction into the structures, properties, and morphologies are presented. Further prospects and promising developments of the materials in the supercapacitor field are also proposed.

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“…For instance, Yuan et al. prepared hollow mesoporous NiCo 2 S 4 ellipsoid, which exhibited a specific capacitance of 495 F g −1 , higher than that of NiCo 2 O 4 counterpart (185 F g −1 ) at a current density of 10 A g −1 . The superior electrochemical performance can be ascribed to the high specific surface area, facile electrolyte penetration and rich accessible electroactive sites.…”

Section: Introductionmentioning

confidence: 99%

Construction of NiCo₂S₄@NiMoO₄ Core‐Shell Nanosheet Arrays with Superior Electrochemical Performance for Asymmetric Supercapacitors

et al. 2018

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In this work, we develop hierarchical NiCo2S4@NiMoO4 nanosheet arrays directly anchored on nickel foam by a hydrothermal method. The self‐supported core‐shell architecture take advantage of high electroactive surface area, rapid channels for ion diffusion and electron transport, and the synergistic contributions from both the NiCo2S4 core and NiMoO4 shell. Remarkably, the NiCo2S4@NiMoO4 electrode showed high specific capacitance of 1487.6 F g−1 at a current density of 1 A g−1 and superior cycling stability (89.7 % capacitance retention after 8000 charge‐discharge cycles). An asymmetric supercapacitor (ASC) with an optimized cell voltage of 1.6 V was assembled by using activated carbon (AC) as the negative electrode and NiCo2S4@NiMoO4 electrode as the positive electrode, achieving an extraordinary energy density of 53.2 Wh kg−1 at a power density of 560 W kg−1, and remained 34.8 Wh kg−1 at a maximum power density of 11.2 kW kg−1. The outstanding electrochemical behavior indicate that the NiCo2S4@NiMoO4 nanosheet arrays hold great promise for high‐performance energy storage devices.

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Comparative investigation of hollow mesoporous NiCo2S4 ellipsoids with enhanced pseudo-capacitances towards high-performance asymmetric supercapacitors

Cited by 119 publications

References 33 publications

Uniform Hollow Mesoporous Nickel Cobalt Sulfide Microdumbbells: A Competitive Electrode with Exceptional Gravimetric/Volumetric Pseudocapacitance for High‐Energy‐Density Hybrid Superapacitors

Uniform Hollow Mesoporous Nickel Cobalt Sulfide Microdumbbells: A Competitive Electrode with Exceptional Gravimetric/Volumetric Pseudocapacitance for High‐Energy‐Density Hybrid Superapacitors

NiCo₂S₄ Materials for Supercapacitor Applications

Construction of NiCo₂S₄@NiMoO₄ Core‐Shell Nanosheet Arrays with Superior Electrochemical Performance for Asymmetric Supercapacitors

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Comparative investigation of hollow mesoporous NiCo2S4 ellipsoids with enhanced pseudo-capacitances towards high-performance asymmetric supercapacitors

Cited by 119 publications

References 33 publications

Uniform Hollow Mesoporous Nickel Cobalt Sulfide Microdumbbells: A Competitive Electrode with Exceptional Gravimetric/Volumetric Pseudocapacitance for High‐Energy‐Density Hybrid Superapacitors

Uniform Hollow Mesoporous Nickel Cobalt Sulfide Microdumbbells: A Competitive Electrode with Exceptional Gravimetric/Volumetric Pseudocapacitance for High‐Energy‐Density Hybrid Superapacitors

NiCo2S4 Materials for Supercapacitor Applications

Construction of NiCo2S4@NiMoO4 Core‐Shell Nanosheet Arrays with Superior Electrochemical Performance for Asymmetric Supercapacitors

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Product

Resources

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NiCo₂S₄ Materials for Supercapacitor Applications

Construction of NiCo₂S₄@NiMoO₄ Core‐Shell Nanosheet Arrays with Superior Electrochemical Performance for Asymmetric Supercapacitors