Specific Capacitance and Cyclic Stability of Graphene Based Metal/Metal Oxide Nanocomposites: A Review

Anwar, Abdul Waheed; Majeed, Abdul; Iqbal, Nadeem; Ullah, Waseem; Shuaib, Ahmad; Ilyas, Usman; Bibi, Fozia; Rafique, Hummera

doi:10.1016/j.jmst.2014.12.012

Cited by 68 publications

(21 citation statements)

References 104 publications

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“…Recently, graphene-based nanocomposites have captured considerable attention due to their unique properties and the large variety of possible applications, ranging from sensing and energy storage to heterogeneous, electro-, and photocatalysis [1][2][3][4][5][6]. Thanks to the striking combination of high specific surface area [7], chemical inertness [8], great mechanical strength [9], and excellent electrical and thermal conductivities [10], the utilization of graphene as an active support framework for functional nanoparticles (NPs) has open promising research areas. Various methods have been developed for the synthesis of graphene, through either chemical or physical routes [3,[11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties

Modafferi

Santangelo

Fiore

et al. 2019

Journal of Nanomaterials

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Transition metal oxides on reduced graphene oxide (TMO@rGO) nanocomposites were successfully prepared via a very simple one-step solvothermal process, involving the simultaneous (thermal) reduction of graphene oxide to graphene and the deposition of TMO nanoparticles over its surface. Texture and morphology, microstructure, and chemical and surface compositions of the nanocomposites were investigated via scanning electron microscopy, X-ray diffraction, micro-Raman spectroscopy, and X-ray photoelectron spectroscopy, respectively. The results prove that Fe2O3@rGO, CoFe2O4@rGO, and CoO@rGO are obtained by using Fe and/or Co acetates as oxide precursors, with the TMO nanoparticles uniformly anchored onto the surface of graphene sheets. The electrochemical performance of the most promising nanocomposite was evaluated as anode material for sodium ion batteries. The preliminary results of galvanostatic cycling prove that Fe2O3@rGO nanocomposite exhibits better rate capability and stability than both bare Fe2O3 and Fe2O3+rGO physical mixture.

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Section: Introductionmentioning

confidence: 99%

Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties

Modafferi

Santangelo

Fiore

et al. 2019

Journal of Nanomaterials

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“…Pseudocapacitors utilize fast and reversible redox reactions near the surface and on the surface of the electrodes to store the charge whereas electrochemical double-layer capacitors utilize electrostatic adsorption at the electrode and electrolyte interface to store energy [6]. Nanoporous carbonaceous materials are investigated as the unique electrode materials for EDLC's owing to their high specific surface area, higher conductivity, and high mechanical stability [7]. Transition metal oxides and conducting polymers are promising electrodes for Pseudocapacitors.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

et al. 2019

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Well-defined 1D molybdenum oxide nanostructures were synthesized using the hydrothermal method with sodium dodecyl sulfate as a capping agent with water as a solvent for the supercapacitor application at very low electrolyte concentration. The structural, morphological and optical properties of the as-prepared nanoparticles were characterized using X-ray diffraction, Field Emission Scanning Electron Microscope, and UV-visible spectroscopy. X-ray diffraction and FESEM studies revealed the formation of '1D Molybdenum Oxide nanorods with an average crystallite size of 31 nm. UV-visible spectroscopic analysis showed that the optical bandgap of molybdenum oxide nanorods to be 3.01 eV. The electrochemical performance of as synthesized nanorods was performed by using cyclic voltammetry, galavanostatic charge-discharge, and electrochemical impedance spectroscopy. The maximum specific capacitance obtained was 411 F g −1 in 0.1M NaOH electrolyte solution with excellent rate capability even at higher scan rates. Cyclic retention of 82.4% was observed even after 1000 cycles making it suitable electrode material for high-performance supercapacitor applications.

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“…, relevant mechanical strength, excellent conductivity (5000 W m −1 K −1 ), high optical transmittance (∼97.7%), large theoretical specific surface area (2630 m 2 g −1 ), and superior mechanical strength which make graphene a suitable anode material for LIBs [105][106][107][108][109][110][111]. Besides, the rich functional groups on the surface of graphene make it an appealing 2D substrate for the anisotropic growth of different kinds of active materials [112,113].…”

Section: Combining Tio 2 With Carbon Nanotubes (Cnts)mentioning

confidence: 99%

Recent Progress of TiO₂-Based Anodes for Li Ion Batteries

Liu

Yang

2016

Journal of Nanomaterials

100

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TiO2-based materials have been widely studied in the field of photocatalysis, sensors, and solar cells. Besides that, TiO2-based materials are of great interest for energy storage and conversion devices, in particular rechargeable lithium ion batteries (LIBs). TiO2has significant advantage due to its low volume change (<4%) during Li ion insertion/desertions process, short paths for fast lithium ion diffusion, and large exposed surface offering more lithium insertion channels. However, the relatively low theoretical capacity and electrical conductivity of TiO2greatly hampered its practical application. Various strategies have been developed to solve these problems, such as designing different nanostructured TiO2to improve electronic conductivity, coating or combining TiO2with carbonaceous materials, incorporating metal oxides to enhance its capacity, and doping with cationic or anionic dopants to form more open channels and active sites for Li ion transport. This review is devoted to the recent progress in enhancing the LIBs performance of TiO2with various synthetic strategies and architectures control. Based on the lithium storage mechanism, we will also bring forward the existing challenges for future exploitation and development of TiO2-based anodes in energy storage, which would guide the development for rationally and efficiently designing more efficient TiO2-based LIBs anodes.

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Specific Capacitance and Cyclic Stability of Graphene Based Metal/Metal Oxide Nanocomposites: A Review

Cited by 68 publications

References 104 publications

Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties

Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

Recent Progress of TiO₂-Based Anodes for Li Ion Batteries

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Specific Capacitance and Cyclic Stability of Graphene Based Metal/Metal Oxide Nanocomposites: A Review

Cited by 68 publications

References 104 publications

Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties

Transition Metal Oxides on Reduced Graphene Oxide Nanocomposites: Evaluation of Physicochemical Properties

Hydrothermal approached 1-D molybdenum oxide nanostructures for high-performance supercapacitor application

Recent Progress of TiO2-Based Anodes for Li Ion Batteries

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Recent Progress of TiO₂-Based Anodes for Li Ion Batteries