Porous V2O5 nanorods/reduced graphene oxide composites for high performance symmetric supercapacitors

Liu, Huanji; Zhu, Wenliang; Long, Duanfu; Zhu, Jiliang; Pezzotti, Giuseppe

doi:10.1016/j.apsusc.2019.01.273

Cited by 101 publications

(32 citation statements)

References 51 publications

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“…4,5 In the latter case, conductive polymers (e.g. polyaniline (PANI), [6][7][8] polypyrrole (PPy), 9,10 polythiophene (PTh) 11 and poly(3,4-vinylenedioxythiophene) (PEDOT) 12 ) and metal oxides [13][14][15] are mostly used to store energy through rapid reversible faradaic redox reactions. Among them, PPy is considered as a promising material for supercapacitors because of its low cost, easy preparation, tailored conductivity and high capacitance per unit volume (400-500 F cm À3 ).…”

Section: Introductionmentioning

confidence: 99%

Ice-interface assisted large-scale preparation of polypyrrole/graphene oxide films for all-solid-state supercapacitors

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Ice-interface assisted large-scale preparation of polypyrrole/graphene oxide films for all-solid-state supercapacitors

et al. 2020

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“…The fitting of the V2p 1/2 peak reveals two states at 524.9 eV, which is attributed to V 5 + , and 523.9 eV, which is attributed to V 4 + . [35] The coexistence of the oxidation states of V 4 + and V 5 + is important to enhance an electronic conductivity and structural stability of V 2 O 5 • nH 2 O composites. [36] The highresolution O 1s spectrum as shown in Figure 3d, the peaks can be divided into three different components with the binding energy at 532.19, 531.7, and 530 eV, which indicates the presence of the surface adsorption oxygen (VÀ OÀ H) and vanadium oxide bond (VÀ O) and physically adsorbed molecular water (HÀ OÀ H), respectively.…”

Section: Resultsmentioning

confidence: 99%

High‐Performance Ytterbium‐Doped V₂O₅ ⋅ H₂O Binder‐Free Thin‐Film Electrodes for Supercapacitors

Yang

Cen

et al. 2021

ChemElectroChem

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In this work, honeycomb-like Yb-doped V 2 O 5 • nH 2 O binder-free thin film electrodes are synthesized via a simple and convenient sol-gel method. Benefiting from the synergy of V 2 O 5 • nH 2 O and rare-earth metal ion Yb 3 + , thin-layer honeycomb-like morphology formed upon the introduction of Yb 3 + into the V 2 O 5 • nH 2 O, which markedly promotes the electrochemical performance of the V 2 O 5 • H 2 O thin-film electrode. After the condition optimization, 8 % YbÀ V 2 O 5 • H 2 O exhibits superior electrochemical performance with a specific capacitance of 703 F g À 1 (at 1 A g À 1 )and outstanding cycling stability. Besides, owing to the ultrahigh conductivity of oxide super-P (OSP) nanoparticles, the V 2 O 5 • H 2 O@OSP-4 binder-free film electrode shows a high specific capacitance of 627 F g À 1 , which was prepared by the same simple sol-gel strategy. The assembled 8 % YbÀ V 2 O 5 • nH 2 O//V 2 O 5 • nH 2 O@OSP-4 device delivers a high specific energy density and excellent cycling stability. This study may have certain inspirations for the fabrication of thin-film electrodes for high-efficiency energy storage systems.

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“…Table 3 shows supercapacitors with excellent performance can be prepared using Gr/metal oxide composites. e specific capacities of the obtained capacitors were higher than those comprising metal oxides containing no Gr, and the cycle stability was good [49][50][51][52][53][54][55][56]. Of particular interest, one study by Liu et al described the preparation of RGO/V 2 O 5 composite material, which exhibited a capacitance of Advances in Materials Science and Engineering Elastic modulus and yielding strength were 1.3 and 1.8 folds, respectively, higher than those of pure Cu [37] Gr/Cu Sintering 0.5 wt.%…”

Section: Applications Of Graphene/inorganic Composite Materialsmentioning

confidence: 99%

A Review on the Contemporary Development of Composite Materials Comprising Graphene/Graphene Derivatives

Long

Weng

2020

Advances in Materials Science and Engineering

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As two-dimensional materials with a high specific surface area, strength, and electrical and thermal conductivity, graphene (Gr) and its derivatives have great application prospects in various fields such as structural reinforcement, energy storage, optics, and electrical and thermal conductivity. However, the current preparation method of Gr is complicated and expensive. Its preparation cost can be reduced using Gr composites that include inorganic materials or other polymers. Composite materials comprising Gr and inorganic materials are generally prepared using sinter molding, chemical reduction, or chemical deposition. Gr should be able to mitigate several of the defects resulting from inorganic materials, including their poor toughness, small specific capacity, and low photoelectric conversion rate. The mitigation of these defects should result in the expansion of the applications of Gr composites for use in capacitors, catalysts, and sensors, among other devices. Although solution blending or in situ polymerization produces a relatively good mixing effect, in general, melt blending is used in the large-scale processing of Gr composites with polymer materials. Gr can be used to partially mitigate several weaknesses of polymer materials, including their low strength, poor electrical and thermal conductivities, and poor isolation performance, and expand the applications of Gr composites for use in electrical and thermal conductive materials and functional membrane materials, among other applications. The goal of the present paper is to introduce the structural properties of Gr and a surface modification method for Gr. In addition, the preparation methods and application fields of different Gr composite materials are reviewed. Finally, the development prospects and key issues are discussed.

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Porous V2O5 nanorods/reduced graphene oxide composites for high performance symmetric supercapacitors

Cited by 101 publications

References 51 publications

Ice-interface assisted large-scale preparation of polypyrrole/graphene oxide films for all-solid-state supercapacitors

Ice-interface assisted large-scale preparation of polypyrrole/graphene oxide films for all-solid-state supercapacitors

High‐Performance Ytterbium‐Doped V₂O₅ ⋅ H₂O Binder‐Free Thin‐Film Electrodes for Supercapacitors

A Review on the Contemporary Development of Composite Materials Comprising Graphene/Graphene Derivatives

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Porous V2O5 nanorods/reduced graphene oxide composites for high performance symmetric supercapacitors

Cited by 101 publications

References 51 publications

Ice-interface assisted large-scale preparation of polypyrrole/graphene oxide films for all-solid-state supercapacitors

Ice-interface assisted large-scale preparation of polypyrrole/graphene oxide films for all-solid-state supercapacitors

High‐Performance Ytterbium‐Doped V2O5 ⋅ H2O Binder‐Free Thin‐Film Electrodes for Supercapacitors

A Review on the Contemporary Development of Composite Materials Comprising Graphene/Graphene Derivatives

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High‐Performance Ytterbium‐Doped V₂O₅ ⋅ H₂O Binder‐Free Thin‐Film Electrodes for Supercapacitors