Synthesis of NiCo2S4-based nanostructured electrodes supported on nickel foams with superior electrochemical performance

Zhu, Tao; Zhang, Guoxiong; Hu, Tao; He, Zhenni; Lu, Yisheng; Wang, Guiqing; Guo, Haibo; Luo, Jian; Lin, Cheng-Ju; Chen, Yigang

doi:10.1007/s10853-015-9497-8

Cited by 85 publications

(22 citation statements)

References 46 publications

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“…These redox peaks mainly originate from the Faradaic redox reactions related to Co 2+ /Co 3+ and Ni 2+ /Ni 3+ redox couples, which were probably mediated by the OH· ions in the alkaline electrolyte 27 28 . The reversible redox reaction can be expressed by the following reaction equations 7 29 :…”

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confidence: 99%

Facile synthesis of hybrid CNTs/NiCo2S4 composite for high performance supercapacitors

Gong

Pan

2016

Sci Rep

115

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In this work, a novel carbon nanotubes (CNTs)/NiCo 2 S 4 composite for high performance supercapacitors was prepared via a simple chemical bath deposition combined with a post-anion exchange reaction. The morphologies and phase structures of the composites were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy (Raman), X-ray photoelectron spectroscopy (XPS) and low-temperature sorption of nitrogen (BET). The electro-chemical tests revealed that the CNT/NiCo 2 S 4 composite exhibited high electrochemical performance, because the CNTs were used as a conductive network for the NiCo 2 S 4 hexagonal nanoplates. Compared with pure NiCo 2 S 4 and the mechanically mixed CNTs/NiCo 2 S 4 composite, the CNTs/NiCo 2 S 4 composite electrode material exhibited excellent supercapacitive performance, such as a high specific capacitance up to 1537 F/g (discharge current density of 1 A/g) and an outstanding rate capability of 78.1% retention as the discharge current density increased to 100 A/g. It is therefore expected to be a promising alternative material in the area of energy storage.Supercapacitors have attracted considerable attentions because of their fast recharge capability, higher power density, and long cycling lifespan, all of which make them an essential power source for various energy storage applications 1-3 . In general, the electrode materials applied in supercapacitors can be divided into two categories based on their energy storage mechanisms: electrical double layer capacitors (EDLCs) and pseudo-capacitors (PCs) 3 . The performance of supercapacitors mainly depends on the electrochemical properties of the electrode materials. In fact, PCs usually exhibit much higher capacitances than EDLCs, because PCs electrode materials provide energy by fast and reversible redox reactions 4 .Transition metal sulphide (or oxide) exhibits ultra-high pseudoactive capacitance among the various electrode materials 5,6 , and has a much higher specific capacitance due to its multiple oxidation states. However, the poor electrical conductivity and low energy density of these materials restrict their applications 7 . Therefore, it is imperative to develop high performance alternative materials for supercapacitors.Recently, a type of ternary nickel cobalt sulphide (NiCo 2 S 4 ) has been demonstrated as a promising electrode material for supercapacitors. NiCo 2 S 4 has possess richer redox reactions than the corresponding binary nickel sulphide and cobalt sulphide 8 . Compared with NiCo 2 O 4 , NiCo 2 S 4 shows a narrower band gap and higher conductivity, which indicate better electrochemical performance 7,8 . Park et al. 9 . determined that the replacement of oxygen (O) with sulphur (S) creates a more flexible structure because the electronegativity of Sis lower than that of oxygen (O), which prevents the disintegration of the structure by the elongation between the layers followed by the enchancement of the electron transport efficiency in the structure. These advantages make NiCo 2...

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confidence: 99%

Facile synthesis of hybrid CNTs/NiCo2S4 composite for high performance supercapacitors

Gong

Pan

2016

Sci Rep

115

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“…The synthesis of spinel-structured NCS nanomaterials with tunable sulfur vacancyc oncentrationsa nd impuritiesa s ar esult of controlling the sulfurization process was presented by Lu et al [141] Also, Zhu et al reported the SDS-assisted preparation of NCS nanostructured films on nickelf oam through at wo-step hydrothermal method. [118] The results showed that the surfactant (SDS) significantly influenced the crystal structure and morphology,w hich, in turn, induced substantial im-provement in the electrochemical properties of NCS electrodes. The NCS-SDS electrodes deliver as pecific capacitance of 2519 Fg À1 at 0.5 Ag À1 .…”

Section: Three-dimensional Ncsmentioning

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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“…The adsorption isotherms shown in Fig. 9 are classified as type IV hysteresis loops that hold to the mesoporous structure [10] of the sample. It can be further confirmed by the Barett-Joyner-Halenda (inset of Fig.…”

Section: Surface Area and Pore Size Analysismentioning

confidence: 99%

Electrochemical investigation of hydrothermally induced MnCo2S4 nanoparticles as an electrode material for high performance supercapacitors

Dakshana¹,

Meyvel²,

Malarvizhi³

et al. 2020

Nanosystems: Phys. Chem. Math.

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Ternary spinel MnCo 2 S 4 spherical nanoparticles are prepared through a simple one step hydrothermal approach with precursors followed by an ion exchange reaction. The obtained spherical nanoparticles offers a high specific surface area with mesoporous structure, this aids in providing outstanding electrochemical performance with a specific capacitance of 707.77 F/g at 2 A/g and a good cyclic stability (initial capacitance of 95.15% after 10000 cycles). It offers a high energy density of 78.17 W h Kg −1 to satisfy the commercial needs. By the utilization of structural and electrochemical benefits, MnCo 2 S 4 electrode establishes its significant potential in the field of energy storage system.

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Synthesis of NiCo2S4-based nanostructured electrodes supported on nickel foams with superior electrochemical performance

Cited by 85 publications

References 46 publications

Facile synthesis of hybrid CNTs/NiCo2S4 composite for high performance supercapacitors

Facile synthesis of hybrid CNTs/NiCo2S4 composite for high performance supercapacitors

NiCo₂S₄ Materials for Supercapacitor Applications

Electrochemical investigation of hydrothermally induced MnCo2S4 nanoparticles as an electrode material for high performance supercapacitors

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Synthesis of NiCo2S4-based nanostructured electrodes supported on nickel foams with superior electrochemical performance

Cited by 85 publications

References 46 publications

Facile synthesis of hybrid CNTs/NiCo2S4 composite for high performance supercapacitors

Facile synthesis of hybrid CNTs/NiCo2S4 composite for high performance supercapacitors

NiCo2S4 Materials for Supercapacitor Applications

Electrochemical investigation of hydrothermally induced MnCo2S4 nanoparticles as an electrode material for high performance supercapacitors

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Product

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NiCo₂S₄ Materials for Supercapacitor Applications