2D V2O5 nanoflakes as a binder-free electrode material for high-performance pseudocapacitor

Javed, Muhammad Sufyan; Najim, Tayyba; Hussain, Iftikhar; Batool, Saima; Idrees, Muhammd; Mehmood, Ayaz; Imran, Muhammad; Assiri, Mohammad A.; Ahmad, Awais; Shah, Syed Shoaib Ahmad

doi:10.1016/j.ceramint.2021.05.181

Cited by 57 publications

(28 citation statements)

References 5 publications

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“…Due to their special properties such as cost-effective fabrication procedure, good chemical stability, eco-friendliness, high theoretical specific capacity, and abundant availability, transition metal oxides (TMOs) including Fe 2 O 3 , Co 3 O 4 , NiO and CuO have at-tracted considerable attention for use in various applications, including solar cells, photocatalysts, electrode materials, and gas sensors [11][12][13][14][15][16][17]. However, TMOs have some drawbacks such as low conductivity, pulverization, and aggregation caused by large volume expansion [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

et al. 2021

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In this work, a simple hydrothermal method was employed to prepare a pristine sample of copper oxide (CuO) and three samples of copper oxide–graphene nanocomposites (CuO-xG) with x = 2.5, 5, and 10 mg of graphene. The synthesized samples were characterized using X-ray powder diffractometry (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR) and ultraviolet–visible (UV-Vis) spectroscopy. The XRD patterns of CuO-xG nanocomposites exhibited the diffraction peaks related to the crystal planes of monoclinic CuO and hexagonal graphite. The surface morphology of the prepared samples was investigated using FESEM images. EDX analysis was used to investigate the chemical composition of the synthesized samples. FTIR spectroscopy identified the vibrational modes of the covalent bonds present in the samples. The allowed direct optical bandgap energy was calculated for all prepared samples using UV-Vis absorption spectra. The small bandgap of CuO-xG nanocomposites indicates their potential use as an effective photocatalyst in the presence of visible light. Photocatalytic activity of the samples was explored for the degradation of methylene blue (MB) dye contaminant under visible light irradiation. The results showed that the CuO-5G sample has the highest photodegradation efficiency (~56%).

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

et al. 2021

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“…17,18 Scientic studies of electrode materials such as carbon nanotubes, graphene oxide (GO), metal chalcogenides, metalorganic frameworks (MOFs), metal phosphides, high-entropy alloys, and layered hydroxides, and their progress in transiting towards hybrid materials and oriented structures have been signicant and well investigated throughout the years. [19][20][21][22][23][24][25][26][27] For example, transition metal oxides, [28][29][30][31][32] suldes, [33][34][35][36] porous carbon, 37 GO, 38 and reduced GO (rGO) are well-known 2D materials which have been utilized and evaluated in various applications. [39][40][41] 2D structures are desirable as they can act as protective shells or coatings, and also act as substrates to further grow nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

MXene in core–shell structures: research progress and future prospects

et al. 2022

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“…RuO 2 , on the other hand, is quite rare and expensive. For PCs electrodes, RuO 2 is often replaced with a variety of different transition metal oxides, including manganese oxide (MnO 2 ) [ 9 ], indium oxide (In 2 O 3 ) [ 10 ], cobalt oxide (Co 3 O 4 ) [ 11 ], iron oxide (Fe 3 O 4 ) [ 12 ], and vanadium oxide (V 2 O 5 ) [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Binder-Free Porous 3D-ZnO Hexagonal-Cubes for Electrochemical Energy Storage Applications

et al. 2022

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Considerable efforts are underway to rationally design and synthesize novel electrode materials for high-performance supercapacitors (SCs). However, the creation of suitable materials with high capacitance remains a big challenge for energy storage devices. Herein, unique three-dimensional (3D) ZnO hexagonal cubes on carbon cloth (ZnO@CC) were synthesized by invoking a facile and economical hydrothermal method. The mesoporous ZnO@CC electrode, by virtue of its high surface area, offers rich electroactive sites for the fast diffusion of electrolyte ions, resulting in the enhancement of the SC’s performance. The ZnO@CC electrode demonstrated a high specific capacitance of 352.5 and 250 F g−1 at 2 and 20 A g−1, respectively. The ZnO@CC electrode revealed a decent stability of 84% over 5000 cycles at 20 A g−1 and an outstanding rate-capability of 71% at a 10-fold high current density with respect to 2 A g−1. Thus, the ZnO@CC electrode demonstrated improved electrochemical performance, signifying that ZnO as is promising candidate for SCs applications.

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2D V2O5 nanoflakes as a binder-free electrode material for high-performance pseudocapacitor

Cited by 57 publications

References 5 publications

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

RETRACTED: Synthesis, Characterization and Photodegradation Studies of Copper Oxide–Graphene Nanocomposites

MXene in core–shell structures: research progress and future prospects

Binder-Free Porous 3D-ZnO Hexagonal-Cubes for Electrochemical Energy Storage Applications

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