Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Geng, Zhe; Wang, Yuping

doi:10.1007/s10008-015-2942-4

Cited by 29 publications

(11 citation statements)

References 30 publications

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“…Comparing 1), the specific capacitance of 8 % YbÀ V 2 O 5 • nH 2 O thin film electrode is much higher. [38][39][40][41][42][43][44][45][46][47] The above phenomenon is consistent with the CV results, which proves that doping proper amount of Yb 3 + can improve markedly electrochemical performance of V 2 O 5 • nH 2 O. Figure 4d shows the GCD test results of 8 % YbÀ V 2 O 5 • nH 2 O thin film electrode under different current densities ranging from 0.5 A g À 1 to 5 A g À 1 .…”

Section: Resultssupporting

confidence: 78%

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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Section: Resultssupporting

confidence: 78%

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

Yang

Cen

et al. 2021

ChemElectroChem

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“…To further improve the material charge storing capabilities, Geng et al. synthesized V 2 O 5 ⋅ 1.6H 2 O nanobelts/graphene composites by self‐assembly‐hydrothermal technique . They found that the V 2 O 5 ⋅ 1.6H 2 O nanobelts were typically ∼90 nm in width and ∼1.5 μm long.…”

Section: V2o5‐carbon‐based Compositesmentioning

confidence: 99%

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Majumdar¹,

2019

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Vanadium pentoxide (V 2 O 5 ) is renowned among the highly efficient supercapacitor electrode-materials for high power and energy densities, excellent specific capacitance, prolonged cycle lives, variable oxidation states of V, reversible nature of interconversions, theoretical importance, etc. Various synthetic methodologies and morphologies, formation of composites, and doping for tuning properties are the additional causes of interest. Different synthetic techniques like sol-gel, solvothermal, electro-deposition, electro-spinning, atomic layer deposition, etc. are employed to prepare V 2 O 5 -based electrode materials with merits and demerits. High rate of material agglomeration and poor conductivity limit its usage in pristine morphology. Accordingly, the impact on charge storage behavior of V 2 O 5 on blending with various carbon-based systems has been explored for materials like activated carbons, conducting polymers, carbon nanotubes and functionalized graphene systems as binary/ternary composites. The aim has been to optimize the key factors such as reduced nanostructure lumping, minimal interfacial resistance and ultrafast charge diffusion across hollow porous structures which may eventually lead to the theoretically expected high specific capacitance (> 1000 F g À 1 ). In this review, we have discussed on the recent progress in the research of V 2 O 5 -based materials and highlighted on the correlation between morphology and electrochemical performances. In the course, we have attempted to delineate the advantage-disadvantages of different composite morphologies that may help to outline the present status and future aspects of these materials that the authors believe will be of first-hand assistance especially to the beginners in the field of research.

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“…Similar diffraction patterns have also been observed in chemically pre-intercalated δ-V 2 O 5 . [29][30][31][32][33] Essentially, these compounds originate from the parent material of…”

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confidence: 99%

Layered Mg_xV₂O₅·nH₂O as Cathode Material for High-Performance Aqueous Zinc Ion Batteries

et al. 2018

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The performance of chemically intercalated V2O5 was found to strongly depend on the interlayer spacing, which is related to the radius of hydrated metal ion, which can be readily tuned by using different intercalated metals. We report a layered Mg2+-intercalated V2O5 as the cathode material for aqueous ZIBs. The large radius of hydrated Mg2+ (∼4.3 Å, compared with 3.8 Å of commonly used Li+) results in an interlayer spacing as large as 13.4 Å (against 11.07 Å for Li+-intercalated V2O5), which allows efficient Zn2+ (de)insertion. As a result, the obtained porous Mg0.34V2O5·0.84H2O cathodes work in a wide potential window of 0.1 to 1.8 V versus Zn2+/Zn, and can deliver high capacities of 353 and 264 mA h g–1 at current densities of 100 and 1000 mA g–1, respectively, along with long-term durability. Furthermore, the reversible Zn2+ (de)intercalation reaction mechanism is confirmed by multiple characterizations methods.

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Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Cited by 29 publications

References 30 publications

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

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

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Layered Mg_xV₂O₅·nH₂O as Cathode Material for High-Performance Aqueous Zinc Ion Batteries

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Synthesis of V2O5·1.6H2O/graphene composite and its application in supercapacitors

Cited by 29 publications

References 30 publications

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

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

V2O5 and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Layered MgxV2O5·nH2O as Cathode Material for High-Performance Aqueous Zinc Ion Batteries

Contact Info

Product

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About

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

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

V₂O₅ and its Carbon‐Based Nanocomposites for Supercapacitor Applications

Layered Mg_xV₂O₅·nH₂O as Cathode Material for High-Performance Aqueous Zinc Ion Batteries