One‐Step Solvothermal Synthesis of 3D Hierarchical NixCo9‐xS8 Structures for High‐Performance Supercapacitors

Chen, Rongna; Liu, Lei; Hou, Li; Zhou, Jianqiu; Gao, Faming

doi:10.1002/celc.201700394

Cited by 5 publications

(5 citation statements)

References 45 publications

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“…The AC@SSM exhibited the characteristics of an electric double-layer capacitor in a KOH aqueous solution electrolyte within a potential window of −1.0 and 0 V, as reported in previous studies. [51][52][53] The NiCo 2 S 4 /CoS 2 @SSM exhibited a remarkable electrochemical reversibility within the range of 0-0.6 V (Figure 9b). Thus, the voltage window of the supercapacitor can be extended to 1.6 V. Figure 9c presents a representative CV curve for the NiCo 2 S 4 /CoS 2 @SSM//AC@SSM supercapacitor device within a potential window of 0-1.6 V at scan rates ranging from 10 to 100 mV s −1 .…”

Section: Assembly and Application Of Hybrid Stretchable Supercapacitorsmentioning

confidence: 99%

“…Accordingly, the NiCo 2 S 4 /CoS 2 @SSM electrode is superior to electrodes composed of CoS 2 , NiCo 2 S 4 , and other metal sulfide composites (Table S1, Supporting Information). [51,52] There are two reasons for the excellent electrochemical performance. On the one hand, the NiCo 2 S 4 nanosheets directly grown on SSM with robust adhesion ensure direct contact and effective electron transport between the charge-collecting substrates of the SSM and the electrochemical-active NiCo 2 S 4 nanosheets.…”

Section: Fabrication Of Stretchable Nanocomposite Ssm Textile Electrodementioning

confidence: 99%

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Making Stretchable Hybrid Supercapacitors by Knitting Non‐Stretchable Metal Fibers

Shao

Zhang

et al. 2020

Adv Funct Materials

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To obtain supercapacitors for wearable electronic devices, highly conductive stretchable electrode substrates with excellent tensile recovery are required. However, the simultaneous realization of the above mentioned characteristics is difficult. In this study, tough stainless‐steel fibers (SSFs) are employed as the substrates for knitting into stainless‐steel meshes (SSMs), for the fabrication of textile electrodes with typical 2D‐interconnected networks. The obtained knitted networks can transform the angular elasticity of SSFs into the stretchability of the textile electrodes. The electrodes based on the SSM substrates can be obtained via the in situ growth of NiCo2S4 nanosheets covered by CoS2 nanowires, which exhibit a high specific capacity, high rate capability, and excellent cycling stability. Moreover, the first stretchable solid‐state hybrid supercapacitors based on SSM display excellent performances with respect to a high energy density (60.2 Wh kg−1 at 800 W kg−1), remarkable tensile recovery (≤40% elongation), and high stability (≈76.4% capacity retention at 30% strain for 1000 stretching cycles). The highly stretchable supercapacitor is sewn on the elbow of a garment to drive a light‐emitting diode, and it maintains a high performance with respect to the repetitive process of bending and straightening, thus demonstrating the high applicability of the designed SSMs to wearable electronics.

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Section: Assembly and Application Of Hybrid Stretchable Supercapacitorsmentioning

confidence: 99%

Section: Fabrication Of Stretchable Nanocomposite Ssm Textile Electrodementioning

confidence: 99%

Making Stretchable Hybrid Supercapacitors by Knitting Non‐Stretchable Metal Fibers

Shao

Zhang

et al. 2020

Adv Funct Materials

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“…Using a simple solvothermal method, we created hierarchical Ni x Co 9– x S 8 nanosheets . Typically, 1.8 mmol of PVP, 2.0 mmol of Co(CH 3 COO) 2 ·4H 2 O, and 1.0 mmol of Ni(CH 3 COO) 2 ·4H 2 O were dissolved into 35 mL of ethanolamine (ETA).…”

Section: Methodsmentioning

confidence: 99%

Efficient Hydrogen Evolution Catalysts Based on Hierarchical Flowerlike Ni_xCo_9–xS₈ Nanosheets

et al. 2023

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In terms of the need for a low-carbon economy and alleviating the need for energy security, hydrogen (H 2 ) plays a key role in promoting a sustainable economy because it is clean and efficient. The bottleneck of the hydrogen evolution reaction (HER) can be overcome by developing high-efficiency electrocatalysts. Using a simple solvothermal method, p-Ni x Co 9−x S 8 with polyvinylpyrrolidone (PVP) compounds are successfully prepared with synergistic effects between bimetallic sulfides. The resulting p-Ni x Co 9−x S 8 catalyst shows a hierarchical flowerlike nanosheet shape based on physical representations. An ultrathin and porous nanosheet surface facilitates rapid electrolyte injection and provides abundant active sites for H + adsorption, thus giving p-Ni x Co 9−x S 8 nanosheets outstanding HER performance. Furthermore, the synergistic effect of a bimetallic electrocatalyst is helpful to improve HER activity. In comparison to Ni x Co 9−x S 8 nanosheets without PVP, individual Co 9 S 8 particles, and individual Ni 9 S 8 nanosheets, p-Ni x Co 9−x S 8 nanosheets have a lower overpotential (137 mV to 10 mA cm −2 ), Tafel slope (109 mV dec −1 ), and 95.7% retention of current after 1000 cycles in the HER process.

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“…With the continuous development of sodium ion battery technology, its application prospects in the field of energy storage have also received attention, and Table 1 summarizes some relevant materials reported at present [176–178] . The potential applications of sodium ion batteries mainly include electric vehicles, energy storage systems, and other fields.…”

Section: Insight For the Challenge And Developmental Direction Of Ele...mentioning

confidence: 99%

Research Progress and Modification Measures of Anode and Cathode Materials for Sodium‐Ion Batteries

Wang,

Tian,

Yao

et al. 2023

ChemElectroChem

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Sodium‐ion batteries (SIBs) work similarly to lithium‐ion batteries, but they cost less and are safer. However, the battery has some shortcomings, such as low energy density and poor stability, which hinder its development and application. The development of electrode materials with low cost and high‐performance characteristics is a hot and difficult point in the research of SIBs. In this paper, the existing sodium ion cathode and anode materials are systematically reviewed. Firstly, the electrochemical structures and properties of various cathode and anode materials were introduced, and the limitations of cathode and anode materials of SIBs were analyzed. Based this, the current modification methods were summarized, such as surface coating of materials, doping of heteroatoms and metal elements to improve the electrochemical performance. In this paper, the research progress and modification measures of SIBs are summarized and prospected. It is helpful to further improve its comprehensive performance and lay a foundation for the future application of cathode and anode materials for SIBs.

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One‐Step Solvothermal Synthesis of 3D Hierarchical Ni_xCo_9‐xS₈ Structures for High‐Performance Supercapacitors

Cited by 5 publications

References 45 publications

Making Stretchable Hybrid Supercapacitors by Knitting Non‐Stretchable Metal Fibers

Making Stretchable Hybrid Supercapacitors by Knitting Non‐Stretchable Metal Fibers

Efficient Hydrogen Evolution Catalysts Based on Hierarchical Flowerlike Ni_xCo_9–xS₈ Nanosheets

Research Progress and Modification Measures of Anode and Cathode Materials for Sodium‐Ion Batteries

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One‐Step Solvothermal Synthesis of 3D Hierarchical NixCo9‐xS8 Structures for High‐Performance Supercapacitors

Cited by 5 publications

References 45 publications

Making Stretchable Hybrid Supercapacitors by Knitting Non‐Stretchable Metal Fibers

Making Stretchable Hybrid Supercapacitors by Knitting Non‐Stretchable Metal Fibers

Efficient Hydrogen Evolution Catalysts Based on Hierarchical Flowerlike NixCo9–xS8 Nanosheets

Research Progress and Modification Measures of Anode and Cathode Materials for Sodium‐Ion Batteries

Contact Info

Product

Resources

About

One‐Step Solvothermal Synthesis of 3D Hierarchical Ni_xCo_9‐xS₈ Structures for High‐Performance Supercapacitors

Efficient Hydrogen Evolution Catalysts Based on Hierarchical Flowerlike Ni_xCo_9–xS₈ Nanosheets