VO2 (A)/graphene nanostructure: Stand up to Na ion intercalation/deintercalation for enhanced electrochemical performance as a Na-ion battery cathode

Xinyuan Hu; Zhengjing Zhao; Lin Wang; Jingbo Li; Chengzhi Wang; Yongjie Zhao; Haibo Jin

doi:10.1016/j.electacta.2018.10.010

VO₂ (A)/graphene nanostructure: Stand up to Na ion intercalation/deintercalation for enhanced electrochemical performance as a Na-ion battery cathode

Xinyuan Hu, Zhengjing Zhao, Lin Wang, Jingbo Li^*, Chengzhi Wang, Yongjie Zhao, Haibo Jin

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Intercalation/deintercalation of large size Na ion leads to serious electrode materials fragmentation that would be the main reason of Na-ion battery capacity fading. Herein, we reported a Na-ion battery cathode material composed of layer-structured VO₂ (A) nanowires wrapped with graphene. The VO₂ (A)/graphene nanostructure which effectively suppressed pulverization of VO₂ (A) nanowires during cyclic charging and discharging exhibited prominent cycle stability and high specific capacity. A reversible capacity of 115 mA h g⁻¹ was retained over 100 cycles at a high current density of 100 mA g⁻¹. Comparing to the electrochemical performance of other vanadium oxides, VO₂ (A)/graphene demonstrates a potential cathode material for Na-ion batteries.

Original language	English
Pages (from-to)	97-104
Number of pages	8
Journal	Electrochimica Acta
Volume	293
DOIs	https://doi.org/10.1016/j.electacta.2018.10.010
Publication status	Published - 10 Jan 2019

Keywords

Battery cathode material
Cycle stability
Na-ion battery
VO (A) nanowire
VO (A)/graphene composite

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10.1016/j.electacta.2018.10.010

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title = "VO2 (A)/graphene nanostructure: Stand up to Na ion intercalation/deintercalation for enhanced electrochemical performance as a Na-ion battery cathode",

abstract = "Intercalation/deintercalation of large size Na ion leads to serious electrode materials fragmentation that would be the main reason of Na-ion battery capacity fading. Herein, we reported a Na-ion battery cathode material composed of layer-structured VO2 (A) nanowires wrapped with graphene. The VO2 (A)/graphene nanostructure which effectively suppressed pulverization of VO2 (A) nanowires during cyclic charging and discharging exhibited prominent cycle stability and high specific capacity. A reversible capacity of 115 mA h g−1 was retained over 100 cycles at a high current density of 100 mA g−1. Comparing to the electrochemical performance of other vanadium oxides, VO2 (A)/graphene demonstrates a potential cathode material for Na-ion batteries.",

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author = "Xinyuan Hu and Zhengjing Zhao and Lin Wang and Jingbo Li and Chengzhi Wang and Yongjie Zhao and Haibo Jin",

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AU - Hu, Xinyuan

AU - Zhao, Zhengjing

AU - Wang, Lin

AU - Li, Jingbo

AU - Wang, Chengzhi

AU - Zhao, Yongjie

AU - Jin, Haibo

PY - 2019/1/10

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AB - Intercalation/deintercalation of large size Na ion leads to serious electrode materials fragmentation that would be the main reason of Na-ion battery capacity fading. Herein, we reported a Na-ion battery cathode material composed of layer-structured VO2 (A) nanowires wrapped with graphene. The VO2 (A)/graphene nanostructure which effectively suppressed pulverization of VO2 (A) nanowires during cyclic charging and discharging exhibited prominent cycle stability and high specific capacity. A reversible capacity of 115 mA h g−1 was retained over 100 cycles at a high current density of 100 mA g−1. Comparing to the electrochemical performance of other vanadium oxides, VO2 (A)/graphene demonstrates a potential cathode material for Na-ion batteries.

KW - Battery cathode material

KW - Cycle stability

KW - Na-ion battery

KW - VO (A) nanowire

KW - VO (A)/graphene composite

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VO₂ (A)/graphene nanostructure: Stand up to Na ion intercalation/deintercalation for enhanced electrochemical performance as a Na-ion battery cathode

Abstract

Keywords

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