Controllable synthesis of hierarchical NiCo2S4@Ni3S2 core–shell nanotube arrays with excellent electrochemical performance for aqueous asymmetric supercapacitors

He, Taobin; Wang, Senlin; Lu, Fengxia; Zhang, Mucan; Zhang, Xiao; Xu, Lin

doi:10.1039/c6ra21284k

Cited by 48 publications

(14 citation statements)

References 63 publications

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“…Figure g showed the power density and energy density characteristics of a pair of ZNCN//FeOOH. It can be seen from the figure that when the power density was 0.75 kW kg −1 , the energy density reaches 66 Wh kg −1 , which has been reported to have a great advantage (active carbon//NiCo 2 S 4 /Co 9 S 8 at 0.15 kW kg −1 , its energy density of 33.5 Wh kg −1 ; NiCo 2 S 4 @Ni 3 S 2 at 0.361 kW kg −1 , the energy density of 32.75 Wh kg −1 ; NiCo 2 S 4 @PPy//active carbon at 0.12 kW kg −1 , its energy density of 34.6 Wh kg −1 ; NiCo 2 S 4 nanotube arrays//active carbon at 0.451 kW kg −1 , its energy density of 40.1 Wh kg −1 ; NiCo 2 S@Ni 3 S 2 //active carbon at 0.31 kW kg −1 , its energy density of 70 Wh kg −1 ). The negative electrode lights up in series and maintains brightness for 5 min.…”

Section: Resultsmentioning

confidence: 93%

“…The resulting mesoporous heterogeneous NCCS electrode with a mass loading of 5 mg cm −2 provides a good pseudocapacity of ≈749 F g −1 at the current rate of 4 A g −1 . Additionaly, there are also some other composites materials, such as NiCo 2 S 4 @Ni 3 S 2 core–shell nanotube arrays, NiCo 2 S 4 @NiO core–shell nanowire arrays, NiCo 2 S 4 @Ni(OH) 2 core–shell nanosheet arrays, NiCo 2 S 4 /Ni‐Co layered double hydroxide . It has been found in the literature that a single metal sulfide, oxide, or hydroxide can produce a uniform morphology, but after a number of cycles, the volume changes greatly, resulting in poor life.…”

Section: Introductionmentioning

confidence: 99%

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High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo₂S₄/Co₉S₈ Nanotube Composites Materials

Sui

Zhang

et al. 2018

Adv Materials Inter

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a high level of technology. However, the demand for new energy had broken the position of traditional energy in social development. [1][2][3][4][5] In the early stage of the development of new energy, rechargeable batteries were considered to be electric vehicles (EV) as efficient power equipment for sustainable energy storage devices. However, the charge storage of the current charge of the rechargeable battery (for example, Ni-MH battery and nonaqueous lithium ion battery) was mainly dependent on the structure of the intercalated electrode material of the intercalation/crystallization cation (H + or Li + ), and thus controlled cation. The diffusion within the crystal frame limited the charge/discharge rate (or power density). [6] However, the anode material properties, synthesis, and theoretical capacity determined the lithium battery technology. [7] Supercapacitors, also known as electrochemical capacitors, are highly charged due to their high power density, excellent rate capability, fast charge/discharge, long cycle life, fast propulsion of charge propagation, and low maintenance costs, triggering great industry and academia attention. Promote the growing use of consumer portable devices, electrical/hybrid electric vehicles, and other equipment. [8,9] Supercapacitors mainly include two categories: one is based on the surface of the capacitor material adsorption and desorption of the electric double layer capacitor, such as carbon nanotubes, [10] active carbon, [11] graphene; [12][13][14] the other is based on the surface and the internal redox reaction of the pseudocapacitor, such as metal oxides, [15] sulfides, [16] hydroxides, [17] which have a common goal: to prepare a variety of nanomorphology of the material or multiphase material composite, in order to improve the performance of the material electrode. [18][19][20][21] Metal sulfide have attracted excessive attention as electrode materials due to its excellent performance. In order to achieve excellent performance of the electrode materials, many research regulate the shape of materials or synthesize other composite materials. one of the representative material is NiCo 2 S 4 , which have much lower optical band gap energy and much higher electric conductivity than that of corresponding metal oxide NiCo 2 O 4 . Additionally, NiCo 2 S 4 , as a binary metal sulfide, are able to provide more redox reaction than a single metal sulfide. [22] Wang and co-workers [23] first synthesized NiCo 2 S 4 @Fe 2 O 3 nanoneedle array anode with a larger specific capacitance (342 F g −1 , at 5 mV s −1 ) and MnO 2 nanosheet array cathode operating in a wide potential window for high energy Flexible energy storage devices are leading to many researches owing to the huge development prospects, especially the energy storage materials. Recently, ZnS/NiCo 2 S 4 /Co 9 S 8 nanotube (ZNCN) is synthesized by adding rod-like ZnO during hydrothermal process, differing from previous reports. The capacitance of ZNCN electrode is 1618.1 F g −1 at the current density of 1 A g −1 in 2 m K...

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo₂S₄/Co₉S₈ Nanotube Composites Materials

Sui

Zhang

et al. 2018

Adv Materials Inter

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“…The combination of NiCo2S4 with other materials to construct hierarchical architectures can produce rich pore (micro or meso) and induce the so-called synergistic effect among different components, [52] which can finally affect the electrochemical performance. Up to now, various NiCo2S4-based nanocomposites have been fabricated, such as NiCo2S4@Ni(OH)2, [53,54] carbon@NiCo2S4, [55] NiCo2S4@CoSx, [56] NiCo2S4@Co9S8, [6] CoS@NiCo2S4, [57] NiCo2S4@PPy, [58] MWCNT-COOH@NiCo2S4, [59] NiCo2S4@Ni3S2, [60] NiCo2S4/Ni0.96S, [27] Nix-Co3-xS4/Ni3S2, [61] NiCo2S4@MnO2, [62][63][64] NiCo2S4@ NiMoO4, [65] Ni-Co2S4@NiO, [66] NiCo2S4@NiFe LDH, [67] NiCo2O4/NiCo2S4, [68] NixCo3-xS4@NiCo2O4 [69] , etc.…”

Section: Structurementioning

confidence: 99%

NiCo2S4-Based Materials for Electrochemical Applications

Sun¹,

Tie²,

Li³

et al. 2017

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NiCo2S4 has attracted worldwide attention in the field of energy storage/conversion. In this paper, we summarize the up-to-date progress on the preparation strategies, the applications as electrode materials for supercapacitors, lithium-ion batteries and dye sensitized solar cells, as well as electrocatalysts for the hydrogen evolution reaction, oxygen reduction reaction and oxygen evolution reaction. We also discuss the strategies to improve the electrochemical performance, and future trends of the NiCo2S4-based materials.

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“…In recent years, transition metal sulfides have been widely explored and researched as the candidate of electrode materials [37][38][39][40][41][42][43]. Transition metal sulfides exhibit much smaller band gap compared with transition metal oxides, resulting in higher conductivity [44,45].…”

Section: Introductionmentioning

confidence: 99%

One-step electrodeposition fabrication of Ni3S2 nanosheet arrays on Ni foam as an advanced electrode for asymmetric supercapacitors

Sun

et al. 2018

Sci. China Mater.

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Ni 3 S 2 nanosheet (NS) arrays on Ni foam were fabricated by a simple one-step electrodeposition strategy, and used as a kind of electrode material for asymmetric supercapacitors. The Ni 3 S 2 NS arrays are interconnected, which can be regarded as bridges between these individual nanoparticle units. The electrochemical performances were evaluated by cyclic voltammetry and chronopotentiometry techniques in a three-electrode system. The Ni 3 S 2 NS arrays display a specific capacitance of 773.6 F g −1 at 1 A g −1 , and excellent rate property of 84.3% at 10 A g −1. The performance of the Ni 3 S 2 NS arrays was further investigated in an asymmetric supercapacitor for potential practical application. The asymmetric supercapacitor using the Ni 3 S 2 electrode and reduced graphene oxide electrode as positive and negative electrodes, respectively, exhibits an energy density of 41.2 W h kg −1 at 1.6 kW kg −1. When up to 16 kW kg −1 , it holds 25.3 W h kg −1. These excellent electrochemical performances are attributed to the improved electronic conductivity and rich redox reaction sites from Ni 3 S 2 NS arrays. Our results indicate that the Ni 3 S 2 NS arrays have great potential for supercapacitors.

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Controllable synthesis of hierarchical NiCo₂S₄@Ni₃S₂ core–shell nanotube arrays with excellent electrochemical performance for aqueous asymmetric supercapacitors

Abstract: Unique NiCo2S4@Ni3S2 core–shell nanotube arrays with a hierarchical structure, as promising positive electrodes for supercapacitors, were designed and synthesized on the surface of Ni foam via a hydrothermal reaction and electrodeposition method.

Cited by 48 publications

References 63 publications

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo₂S₄/Co₉S₈ Nanotube Composites Materials

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo₂S₄/Co₉S₈ Nanotube Composites Materials

NiCo2S4-Based Materials for Electrochemical Applications

One-step electrodeposition fabrication of Ni3S2 nanosheet arrays on Ni foam as an advanced electrode for asymmetric supercapacitors

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Controllable synthesis of hierarchical NiCo2S4@Ni3S2 core–shell nanotube arrays with excellent electrochemical performance for aqueous asymmetric supercapacitors

Abstract: Unique NiCo2S4@Ni3S2 core–shell nanotube arrays with a hierarchical structure, as promising positive electrodes for supercapacitors, were designed and synthesized on the surface of Ni foam via a hydrothermal reaction and electrodeposition method.

Cited by 48 publications

References 63 publications

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo2S4/Co9S8 Nanotube Composites Materials

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo2S4/Co9S8 Nanotube Composites Materials

NiCo2S4-Based Materials for Electrochemical Applications

One-step electrodeposition fabrication of Ni3S2 nanosheet arrays on Ni foam as an advanced electrode for asymmetric supercapacitors

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Controllable synthesis of hierarchical NiCo₂S₄@Ni₃S₂ core–shell nanotube arrays with excellent electrochemical performance for aqueous asymmetric supercapacitors

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo₂S₄/Co₉S₈ Nanotube Composites Materials

High Energy Density Asymmetric Supercapacitor Based ZnS/NiCo₂S₄/Co₉S₈ Nanotube Composites Materials