Advances in graphene-based supercapacitor electrodes

Bokhari, Syeda Wishal; Siddique, Ahmad Hassan; Sherrell, Peter C.; Yue, Xiaoyu; Karumbaiah, Kariappa Maletira; Wei, Shanghai; Ellis, Amanda; Gao, Wei

doi:10.1016/j.egyr.2020.10.001

Cited by 129 publications

(67 citation statements)

References 171 publications

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“…16,17 Moreover, MOFs are conventionally synthesized in powder form, making it challenging to assemble them into lms without a polymeric binder. 18 This, together with the MOFs' poor conductivity, has, to a large extent, limited their use for electrochemical and energy storage applications, 19 including supercapacitors-high power-density, long-lifespan, fastcharging energy storage devices, 20,21 which stand to benet from the tailorable and processable nature of the MOF, particularly where exibility in the material is desired. 22 Consequently, these limitations have necessitated the combination of the MOF with conductive materials, although we note that other factors beyond the conductivity alone are important considerations, particularly for electrochemical applications.…”

Section: Introductionmentioning

confidence: 99%

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

et al. 2022

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“…An excellent power density, faster charge-discharge rate, long shelf life, broad operating temperature, and very long cycle life offered by supercapacitors in contrast to batteries make them highly promising. [1][2][3][4][5][6] A lot of attention was grabbed by 2D metal dichalcogenides (MX 2 , M¼ Mo/W and X ¼ S/Se) nanomaterials as a potent energy storage material. [6][7][8][9][10][11][12][13][14][15] Owing to distinct structural and electrical properties, WS 2 has been considered as a potential candidate among the various 2D transition metal dichalcogenides for next-generation electrochemical energy storage devices.…”

Section: Introductionmentioning

confidence: 99%

WS₂ Nanoflowers as Efficient Electrode Materials for Supercapacitors

Mohan¹,

Manuraj

Anjana³

et al. 2021

Energy Tech

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Supercapacitors are considered as the next‐generation energy storage devices due to their unique performance features. Properties such as large surface areas, high theoretical capacitance, and occurrence of efficient redox reactions at their surfaces make 2D WS2 transition metal dichalcogenides propitious constituents in energy storage devices. Herein, the synthesis of WS2 nanoflowers by a facile hydrothermal technique is reported. Free‐standing flexible supecapacitor electrodes are fabricated by the deposition of the WS2 nanoflowers over flexible conducting carbon fabric substrate. The electrochemical performance of the as‐prepared material is evaluated in a symmetric two‐electrode configuration. The WS2 symmetric capacitor delivers a significant specific capacitance of 119 F g−1 at 1 A g−1 current density. The device exhibits outstanding stability and nearly 100% capacitance retention after 10 000 charge–discharge cycles.

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“…During the last decade graphene [ 1 ] has been among the most studied materials due to its extraordinary properties. Graphene is a two-dimensional carbon allotrope with zero bandgap [ 2 ], while its unique mechanical, chemical, and opto-electronic properties render it a highly attractive material for a plethora of emerging applications, related with solar cells [ 3 ], photonic sensors [ 4 ], supercapacitors [ 5 , 6 ], flexible electronics [ 7 , 8 ], field-effect transistors [ 9 ] and several others.…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Nonlinear Optical Response of Some Graphene Derivatives by Ultraviolet (UV) Irradiation

et al. 2022

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In the present work the impact of in situ photoreduction, by means of ultraviolet (UV) irradiation, on the nonlinear optical response (NLO) of some graphene oxide (GO), fluorographene (GF), hydrogenated fluorographene (GFH) and graphene (G) dispersions is studied. In situ UV photoreduction allowed for the extended modification of the degree of functionalization (i.e., oxidization, fluorination and hydrogenation), leading to the effective tuning of the corresponding sp2/sp3 hybridization ratios. The nonlinear optical properties of the studied samples prior to and after UV irradiation were determined by means of the Z-scan technique using visible (532 nm), 4 ns laser excitation, and were found to change significantly. More specifically, while GO’s nonlinear optical response increases with irradiation time, GF and GFH present a monotonic decrease. The graphene dispersions’ nonlinear optical response remains unaffected after prolonged UV irradiation for more than an hour. The present findings demonstrate that UV photoreduction can be an effective and simple strategy for tuning the nonlinear optical response of these graphene derivatives in a controllable way, resulting in derivatives with custom-made responses, thus more suitable for different photonic and optoelectronic applications.

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Advances in graphene-based supercapacitor electrodes

Cited by 129 publications

References 171 publications

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

WS₂ Nanoflowers as Efficient Electrode Materials for Supercapacitors

Tailoring the Nonlinear Optical Response of Some Graphene Derivatives by Ultraviolet (UV) Irradiation

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Advances in graphene-based supercapacitor electrodes

Cited by 129 publications

References 171 publications

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

Acoustotemplating: rapid synthesis of freestanding quasi-2D MOF/graphene oxide heterostructures for supercapacitor applications

WS2 Nanoflowers as Efficient Electrode Materials for Supercapacitors

Tailoring the Nonlinear Optical Response of Some Graphene Derivatives by Ultraviolet (UV) Irradiation

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WS₂ Nanoflowers as Efficient Electrode Materials for Supercapacitors