Construction of desirable NiCo2S4 nanotube arrays on nickel foam substrate for pseudocapacitors with enhanced performance

Cai, Daoping; Wang, Dandan; Wang, Chenxia; Liu, Bin; Wang, Lingling; Liu, Yuan; Li, Qiuhong; Wang, Taihong

doi:10.1016/j.electacta.2014.11.040

Cited by 215 publications

(89 citation statements)

References 37 publications

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“…The four major peaks at 31.5°, 38.3°, 50.4° and 55.3° can be respectively identified as (311), (400), (511) and (440) planes of the NiCo 2 S 4 phase (JCPDS card No. 20–0782)27282930. Moreover, the diffraction peaks at 37.2°, 43.3°, 62.9° coincide with (111) (200) (220) plane respectively in the standard NiO spectrum (JCPDS card No.…”

Section: Resultsmentioning

confidence: 89%

“…The thin NiO nanosheets can enlarge the effective contact surface area, which enables the full exposure of the active materials to the electrolyte. The core-shell structure could provide short pathways for the ion diffusion and rapid charge collection/transfer, and the enlarged surface area make more sufficient contact between the electrolyte and the electrode172930. Therefore, the maximum harvest of pseudocapacitance can be achieved from the NiCo 2 S 4 @NiO core-shell nanostructure36373839.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

Huang

Shi

Jiang

et al. 2016

Sci Rep

126

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As a new class of pseudocapacitive material, metal sulfides possess high electrochemical performance. However, their cycling performance as conventional electrodes is rather poor for practical applications. In this article, we report an original composite electrode based on NiCo2S4@NiO core-shell nanowire arrays (NWAs) with enhanced cycling stability. This three-dimensional electrode also has a high specific capacitance of 12.2 F cm−2 at the current density of 1 mA cm−2 and excellent cycling stability (about 89% retention after 10,000 cycles). Moreover, an all-solid-state asymmetric supercapacitor (ASC) device has been assembled with NiCo2S4@NiO NWAs as the positive electrode and active carbon (AC) as the negative electrode, delivering a high energy density of 30.38 W h kg−1 at 0.288 KW kg−1 and good cycling stability (about 109% retention after 5000 cycles). The results show that NiCo2S4@NiO NWAs are promising for high-performance supercapacitors with stable cycling based on the unique core-shell structure and well-designed combinations.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

Huang

Shi

Jiang

et al. 2016

Sci Rep

126

View full text Add to dashboard Cite

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“…Especially ternary nickel cobalt sulfides (NiCo 2 S 4 ) not only can provide much higher electrochemical activity and specific capacitances than mono-metal sulfides, but also possess an electric conductivity ∼100 times of NiCo 2 O 4 , while NiCo 2 O 4 conducts 2 orders of magnitude as high as nickel oxides and cobalt oxides [13,14]. In this sense, nanostructured NiCo 2 S 4 is deemed to be a promising candidate as electroactive materials for energy storage [15,16].…”

Section: Introductionmentioning

confidence: 99%

In suit growth of ultradispersed NiCo2S4 nanoparticles on graphene for asymmetric supercapacitors

Xiao

Wang

et al. 2015

Electrochimica Acta

100

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“…[29] However,s tructural instability of NiCo 2 S 4 leads to poor cycling stability. [30] Therefore, different types of NiCo 2 S 4 nanostructures were designed to overcome such drawbacks and improve the electrochemical performance;t hese nanostructures include sheets, [31] hollow nanoplates, [32] nanotubes, [33] and wires, [34] and others. [35][36][37][38][39] Nonetheless, the addition of conductive additives and binders leads to energy loss.…”

Section: Introductionmentioning

confidence: 99%

A Hollow Tube‐on‐Tube Architecture of Carbon‐Tube‐Supported Nickel Cobalt Sulfide Nanotubes for Advanced Supercapacitors

Wang

Cui

et al. 2017

ChemNanoMat

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The nanotube structure has unique advantages, such as a large electroactive surface area and shorter diffusion pathway for ions/electrons for energy storage. In this paper, we fabricated a novel supercapacitor electrode material based on a composite material with a hollow tube‐on‐tube architecture. This architecture, which was derived from the sustainable Juncus roemerianus, consisted of nickel cobalt sulfide nanotubes coating the exterior and interior of carbon tubes. The obtained hollow tube‐on‐tube structure is similar to a reservoir, in which ions/electrons can diffuse via a bi‐directional method and supply and transfer to the carbon tube interface. Consequently, this structure can probably provide more electrochemically active sites for its application in high‐performance asymmetric supercapacitors (ASCs). The assembled ASC device also presents superior specific capacitance (83 F g−1 at the current density of 0.5 A g−1), high energy density (27.7 Wh kg−1 at a power density of 263.6 W kg−1), and good cycling stability (72.23 % capacitance retention after 3000 cycles). Therefore, the NiCo2S4/bio‐carbon electrode with hollow tube‐on‐tube structure is not only a promising electrode material, but also can be applicable to energy storage and conversion devices.

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Construction of desirable NiCo2S4 nanotube arrays on nickel foam substrate for pseudocapacitors with enhanced performance

Cited by 215 publications

References 37 publications

Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

Enhanced cycling stability of NiCo2S4@NiO core-shell nanowire arrays for all-solid-state asymmetric supercapacitors

In suit growth of ultradispersed NiCo2S4 nanoparticles on graphene for asymmetric supercapacitors

A Hollow Tube‐on‐Tube Architecture of Carbon‐Tube‐Supported Nickel Cobalt Sulfide Nanotubes for Advanced Supercapacitors

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