Preparation and performance of carbon dot decorated copper sulphide/carbon nanotubes hybrid composite as supercapacitor electrode materials

Zhao, Tingkai; Peng, Xiarong; Zhao, Xin; Hu, Jingtian; Jiang, Tao; Lu, Xiaofeng; Zhang, Heng; Li, Tiehu; Ahmad, Ishaq

doi:10.1016/j.jallcom.2019.153057

Cited by 43 publications

(13 citation statements)

References 30 publications

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“…CDs can also improve the electrochemical behavior of metal–sulfide electrode materials. For example, Zhao et al 113 used a simple one‐step hydrothermal method for synthesizing a copper sulfide/carbon nanotube composite material with a unique 3D grape string structure while applying CDs as modifiers (Figure 8A). From the TEM and HRTEM images in Figure 8B,C, it can be seen that the material consists of interwound carbon nanotubes and CuS nanospheres with CDs embedded in the interior.…”

Section: Applications Of Cds In Scsmentioning

confidence: 99%

“…(A) Schematic illustration of the synthesis process of CuS@CD–CNTs; (B) TEM and (C) HRTEM images of CuS@CD–CNTs; (D) rate performances of different materials at different current densities; (E) GCD curves of CuS@CD–CNTs; and (F) long cycle stability of CuS@CD–CNTs. Reproduced with permission: Copyright 2020 Elsevier 113 . GCD, galvanostatic charge–discharge; HRTEM, high‐resolution transmission electron microscopy; TEM, transmission electron microscopy…”

Section: Applications Of Cds In Scsmentioning

confidence: 99%

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A review of carbon dots and their composite materials for electrochemical energy technologies

et al. 2021

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Carbon dots (CDs) and their composites as energy storage materials and electrocatalysts have emerged as new types of quasi‐zero‐dimensional carbon materials. CDs can provide a large specific surface area, numerous electron–electron hole pairs, adjustable heteroatom doping, rich surface functional groups, and so on. However, the roles and functional mechanisms of CDs and their composite materials in the enhancement of electrochemical performance remain unclear and need to be understood in depth. Based on the most recent literature, this paper comprehensively reviews the synthesis methods and applications of various categories of CDs and their composites as electrode materials of supercapacitors, lithium‐ion batteries, sodium‐ion batteries, and potassium‐ion batteries, and as electrocatalysts for hydrogen evolution, oxygen evolution, and oxygen reduction reactions in metal–air batteries, fuel cells, and water electrolysis. To facilitate further research and development, several important aspects related to CDs and their composite materials are summarized with analysis of the technical challenges in practical applications and discussion of the possible development perspectives.

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Section: Applications Of Cds In Scsmentioning

confidence: 99%

Section: Applications Of Cds In Scsmentioning

confidence: 99%

A review of carbon dots and their composite materials for electrochemical energy technologies

et al. 2021

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“…Sharma et al showed total EMI shielding effectiveness of PVDF/RGO/CuS from −20 to −18 dB in the frequency range of 12–18 GHz . The microwave absorption performance has also been studied for hierarchical nanostructured CuS, CuS nanoplatelets/PVDF, MoS 2 /RGO, “wool-ball”-like hollow CuS (30 wt %)/PVDF, CuS nanoflakes (20 wt %) (on magnetically decorated graphene), CuS nanoneedles supported on a CNT backbone, CuS/MWCNT, carbon dot-decorated CuS/CNT, core–shell CuS@C quantum dots@C (hollow), hierarchical porous CuS microspheres integrated with carbon nanotubes, and CuS nanostructures. − Therefore, further scope of improvement is recommended to apply CuS for its application in EMI shielding in view of current developments.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Supercapacitor Performance and Electromagnetic Interference Shielding Effectiveness of CuS Quantum Dots Grown on Reduced Graphene Oxide Sheets

Ghosh

Srivastava

2021

ACS Omega

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This study is focused on the preparation of the CuS/RGO nanocomposite via the hydrothermal method using GO and Cu–DTO complex as precursors. X-ray diffraction, Fourier-transform infrared spectroscopy, and Raman and X-ray photoelectron spectroscopy study revealed the formation of the CuS/RGO nanocomposite with improved crystallinity, defective nanostructure, and the presence of the residual functional group in the RGO sheet. The morphological study displayed the transformation of CuS from nanowire to quantum dots with the incorporation of RGO. The galvanostatic charge/discharge curve showed that the CuS/RGO nanocomposite (12 wt % Cu–DTO complex) has tremendous and outperforming specific capacitance of 3058 F g–1 at 1 A g–1 current density with moderate cycling stability (∼60.3% after 1000 cycles at 10 A g–1). The as-prepared nanocomposite revealed excellent improvement in specific capacitance, cycling stability, Warburg impedance, and interfacial charge transfer resistance compared to neat CuS. The fabricated nanocomposites were also investigated for their bulk DC electrical conductivity and EMI shielding ability. It was observed that the CuS/RGO nanocomposite (9 wt % Cu–DTO) exhibited a total electromagnetic shielding efficiency of 64 dB at 2.3 GHz following absorption as a dominant shielding mechanism. Such a performance is ascribed to the presence of interconnected networks and synergistic effects.

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“…long lifetime. [3][4][5] However, compared to lithium-ion batteries, 6 the low energy density of carbon-based SCs restricts the wide practical applications. In order to cope with this issue, a number of carbon-based electrode materials including carbon nanofibers (CNFs), carbon nanotubes (CNTs), graphene, and biomass-derived carbons, 7,8 have been explored to enhance the energy density for carbon-based SCs.…”

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confidence: 99%

Ultrahigh‐areal‐capacitance aqueous supercapacitors enabled by soft biomass‐derived porous carbon membrane

Cui

Wang

Zhang

et al. 2021

Intl J of Energy Research

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Preparation and performance of carbon dot decorated copper sulphide/carbon nanotubes hybrid composite as supercapacitor electrode materials

Cited by 43 publications

References 30 publications

A review of carbon dots and their composite materials for electrochemical energy technologies

A review of carbon dots and their composite materials for electrochemical energy technologies

Enhanced Supercapacitor Performance and Electromagnetic Interference Shielding Effectiveness of CuS Quantum Dots Grown on Reduced Graphene Oxide Sheets

Ultrahigh‐areal‐capacitance aqueous supercapacitors enabled by soft biomass‐derived porous carbon membrane

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