Facile preparation of reduced graphene oxide/copper sulfide composite as electrode materials for supercapacitors with high energy density

Zhao, Tingkai; Yang, Wenbo; Zhao, Xin; Peng, Xiarong; Hu, Jingtian; Tang, Chen; Li, Tiehu

doi:10.1016/j.compositesb.2018.05.058

Cited by 63 publications

(17 citation statements)

References 54 publications

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“…RGO/CuS composite shows high capacitance values of 946 Fg −1 at 10 Mvs −1 and 906 Fg −1 at 1 Ag −1 , respectively. The cycling stability was also super it maintains 89% after 5000 cycles at current density of 5 Ag −1 [115]. A three-dimensional graphene oxide aerogel/copper oxide (3DGOA/CuO) cylindrical composite substance has been effectively manufactured as a super-capacitor electrode material using a comfortable one-step self-assembly hydrothermal procedure.…”

Section: Transition Metal Oxides-graphene Compositesmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

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Two-dimensional (2D) graphene and its outstanding properties such as, enormous conductivities, mechanical strength, optical and electrical properties brought it one of the most studied materials for the production of energy using renewable resources. The composites of graphene with the same morphological materials such as layered transition metal oxides will be the most aspiring combination to boost their conducting, optoelectronic and mechanical properties. Furthermore, the transition metal chalcogenides materials attracted significant attention due to their atomically thin layers and enormous optical, conducting and electrical properties. The layered materials offer mostly atomically thin 2D plane to the charge carrier with superior conducting properties. The thickness at atomic level, band gap, spin orbit coupling electronic and optoelectronics properties of transition metal dichalcogenides makes them one of the promising entities in energy harvesting technologies. The review suggests some strategies to improve the transition metals-composites stability conducting properties to be tailored in various applications.

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Section: Transition Metal Oxides-graphene Compositesmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

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“…The RGO/CuS composite prepared by solvothermal methods exhibited a maximum specific capacitance of 906 F g −1 at 1 A g −1 , excellent cycling stability (89% retention after 5000 cycles at 5 A g −1 ), and a high energy density of 105.6 W h kg −1 (at 2.5 kW kg −1 ). 24 Flower-like copper sulfide/reduced graphene oxide (31.7 wt %) delivered a maximum specific capacitance of 368.3 F g −1 at a current density of 1 A g −1 . 25 Chen et al 26 also reported specific capacitance of GN/CuS microspheres corresponding to 379 F g −1 at 1 A g −1 .…”

Section: ■ Introductionmentioning

confidence: 99%

“…Poor electrical conductivity, low specific capacitance, poor rate capability, cyclic stability, and low energy density were significant challenges in the development of CuS-based SCs . To overcome this, current research is focused on developing nanocomposites of CuS. ,− According to Zhu et al, CuS microspheres coated with thermally reduced graphene oxide (TRGO) exhibited a high specific capacitance of 1222.5 F g –1 with excellent cycling stability. Li et al observed a specific capacitance of 497.8 F g –1 at a current density of 0.2 A g –1 in CuS nanoplate arrays/graphene and concluded strong dependence of the electrochemical performance on morphologies and nanostructural properties of the electrode material.…”

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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“…In the XRD curve of PET/CuS (0.09 M) electrode, the diffraction peaks at 27.8, 29.5, 31.9, 32.9, 47.9, 52.7, and 59.3° are ascribed to the crystal planes of (101), (102), (103), (006), (110), (108), and (116) planes of CuS, respectively (JCPDS card no. 06-0464). , Meanwhile, the diffraction peaks of PET decrease, indicating that CuS is successfully coated on the PET fabric. Afterward, the electrodeposition of PPy only produces a broad diffraction peak around 25°, which overlaps with the broad PET peaks.…”

Section: Results and Discussionmentioning

confidence: 96%

“…06-0464). 20,39 Meanwhile, the diffraction peaks of PET decrease, indicating that CuS is successfully coated on the PET fabric. Afterward, the electrodeposition of PPy only produces a broad diffraction peak around 25°, which overlaps with the broad PET peaks.…”

Section: Energy and Fuelsmentioning

confidence: 99%

Synchronous Dual Roles of Copper Sulfide on the Insulating PET Fabric for High-Performance Portable Flexible Supercapacitors

et al. 2021

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In recent years, low-cost wearable energy storage devices attract much more attention. In this work, the PET/CuS/ PPy composite electrodes are fabricated for portable flexible solidstate supercapacitors (FSSC), originating from the insulating PET fabric substrate. In this occasion, the functional layer of copper sulfide (CuS) are designed and chemically deposited on the insulating PET fabric to synchronously develop its dual functions such as high electrical conductivity and large capacitance. As a result, the PET/CuS/PPy electrode shows a high specific capacitance of 5410 mF cm −2 at 2 mA cm −2 and good cyclic stability (retaining 84.1% after 2000 cycles). This excellent recyclable specific capacitance is ascribed to the outstanding homogenous binder-free conductive morphologies of CuS and PPy, forming the rapid electronic and ionic transfer channels. Especially, the synchronous dual functions of CuS including high electrical conductivity and large capacitance play a more important role in the large specific capacitance. The flexible solid state supercapacitor (FSSC) also bears a superior specific capacitance of 1335 mF cm −2 (10.1 F cm −3 ) at 2 mA cm −2 and an outstanding energy density of 1.4 mW h cm −3 at the power density of 8.4 mW cm −3 , together with fine flexibility and cyclic stability. Four serially connected FSSC devices can easily supply the electric power for LED indicator lights, calculators, and electric fans, indicating the prospective practical applications in portable flexible energy storage devices. This work provides a facile approach to develop the synchronous dual roles of CuS, which will have the extensive applications in wearable flexible E-textiles.

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Facile preparation of reduced graphene oxide/copper sulfide composite as electrode materials for supercapacitors with high energy density

Cited by 63 publications

References 54 publications

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

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

Synchronous Dual Roles of Copper Sulfide on the Insulating PET Fabric for High-Performance Portable Flexible Supercapacitors

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