Synthesis and sodium storage properties of V<sub>2</sub>O<sub>5</sub>/graphene nanocomposites

Zheng Hao; Peng Yi; Wang Shiwei; Meng Weiwei; Du Guangchao

doi:10.7513/j.issn.1004-7638.2023.01.007

Volume 44 Issue 1

Feb. 2023

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Zheng Hao, Peng Yi, Wang Shiwei, Meng Weiwei, Du Guangchao. Synthesis and sodium storage properties of V2O5/graphene nanocomposites[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 32-37. doi: 10.7513/j.issn.1004-7638.2023.01.007

Citation:

Zheng Hao, Peng Yi, Wang Shiwei, Meng Weiwei, Du Guangchao. Synthesis and sodium storage properties of V₂O₅/graphene nanocomposites[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 32-37. doi: 10.7513/j.issn.1004-7638.2023.01.007

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Synthesis and sodium storage properties of V₂O₅/graphene nanocomposites

doi: 10.7513/j.issn.1004-7638.2023.01.007

State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China

Received Date: 2022-08-10
Publish Date: 2023-02-28

Abstract

Abstract

Vanadium pentoxide (V₂O₅) has attracted extensive attention due to its layered structure, abundant resources, high capacity, low cost, high Na⁺ ionic conductivity, small volume change during Na-ion insertion/extraction, and mesopotential platform. V₂O₅/graphene nanocomposites were successfully prepared by hydrothermal method, using oxalic acid and V₂O₅ as raw materials. The results show that the V₂O₅ nanowires and graphene are closely intertwined with each other, forming a V₂O₅-graphene nanocomposite with a tightly network structure. The structure can provide fast electron transfer kinetics, expand the effective contact area between the electrolyte and the electrode material, improve the conductivity of the material and buffer volume changes during Na-ion insertion/extraction. Thus, the electrochemistry properties of V₂O₅/rGO nanocomposites are effectively improved (Over 100 cycles, 154 mAh/g at 100 mA/g).
- vanadium pentoxide,
- reduced graphene oxide,
- nanocomposites,
- sodium-ion batteries,
- cathode materials,
- sodium storage properties

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References(20)

References

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