Free-standing V2O5 electrode for flexible lithium ion batteries

Kuok Hau Seng; Jun Liu; Zai Ping Guo; Zhi Xin Chen; Dianzeng Jia; Hua Kun Liu

doi:10.1016/j.elecom.2010.12.002

Free-standing V₂O₅ electrode for flexible lithium ion batteries

Kuok Hau Seng, Jun Liu, Zai Ping Guo, Zhi Xin Chen, Dianzeng Jia, Hua Kun Liu

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

104 Citations (Scopus)

Abstract

Free-standing and flexible V₂O₅ films have been prepared by the filtration of ultra-long nanowires synthesized through the hydrothermal technique. In order to improve the conductivity of the films, multiwalled carbon nanotubes (MWCNTs) were added to the V₂O ₅ nanowires to form an integrated web-like structure. The structure of the V₂O₅ nanowires was investigated with X-ray diffraction and transmission electron microscopy. The possible use of these films as a cathode for lithium ion batteries was also investigated. The free-standing and flexible film electrodes exhibited good rate capability and excellent cycling performance, with a capacity of 140 mAh/g, even after 50 cycles at 1.7 °C in a voltage range of 2.5-4.0 V. The superior reversible lithium storage capability can be attributed to the fully reversible phase transitions of α-V₂O₅ through to δ-LiV ₂O₅, good lithium diffusion in V₂O₅, and increased electronic conductivity and electrolyte diffusion from the incorporated MWCNT web. © 2010 Elsevier B.V.

Original language	English
Pages (from-to)	383-386
Journal	Electrochemistry Communications
Volume	13
Issue number	5
DOIs	https://doi.org/10.1016/j.elecom.2010.12.002
Publication status	Published - May 2011
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

The authors would like to thank Dr. Tania Silver for the critical reading of the manuscript. Financial support from the Australian Research Council (ARC) through Project DP1094261 is greatly appreciated.

Research Keywords

Carbon nanotubes
Flexible
Free-standing
Lithium ion batteries
Vanadium pentoxide

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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Cite this

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title = "Free-standing V2O5 electrode for flexible lithium ion batteries",

abstract = "Free-standing and flexible V2O5 films have been prepared by the filtration of ultra-long nanowires synthesized through the hydrothermal technique. In order to improve the conductivity of the films, multiwalled carbon nanotubes (MWCNTs) were added to the V2O 5 nanowires to form an integrated web-like structure. The structure of the V2O5 nanowires was investigated with X-ray diffraction and transmission electron microscopy. The possible use of these films as a cathode for lithium ion batteries was also investigated. The free-standing and flexible film electrodes exhibited good rate capability and excellent cycling performance, with a capacity of 140 mAh/g, even after 50 cycles at 1.7 °C in a voltage range of 2.5-4.0 V. The superior reversible lithium storage capability can be attributed to the fully reversible phase transitions of α-V2O5 through to δ-LiV 2O5, good lithium diffusion in V2O5, and increased electronic conductivity and electrolyte diffusion from the incorporated MWCNT web. {\textcopyright} 2010 Elsevier B.V.",

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AU - Guo, Zai Ping

AU - Chen, Zhi Xin

AU - Jia, Dianzeng

AU - Liu, Hua Kun

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N2 - Free-standing and flexible V2O5 films have been prepared by the filtration of ultra-long nanowires synthesized through the hydrothermal technique. In order to improve the conductivity of the films, multiwalled carbon nanotubes (MWCNTs) were added to the V2O 5 nanowires to form an integrated web-like structure. The structure of the V2O5 nanowires was investigated with X-ray diffraction and transmission electron microscopy. The possible use of these films as a cathode for lithium ion batteries was also investigated. The free-standing and flexible film electrodes exhibited good rate capability and excellent cycling performance, with a capacity of 140 mAh/g, even after 50 cycles at 1.7 °C in a voltage range of 2.5-4.0 V. The superior reversible lithium storage capability can be attributed to the fully reversible phase transitions of α-V2O5 through to δ-LiV 2O5, good lithium diffusion in V2O5, and increased electronic conductivity and electrolyte diffusion from the incorporated MWCNT web. © 2010 Elsevier B.V.

AB - Free-standing and flexible V2O5 films have been prepared by the filtration of ultra-long nanowires synthesized through the hydrothermal technique. In order to improve the conductivity of the films, multiwalled carbon nanotubes (MWCNTs) were added to the V2O 5 nanowires to form an integrated web-like structure. The structure of the V2O5 nanowires was investigated with X-ray diffraction and transmission electron microscopy. The possible use of these films as a cathode for lithium ion batteries was also investigated. The free-standing and flexible film electrodes exhibited good rate capability and excellent cycling performance, with a capacity of 140 mAh/g, even after 50 cycles at 1.7 °C in a voltage range of 2.5-4.0 V. The superior reversible lithium storage capability can be attributed to the fully reversible phase transitions of α-V2O5 through to δ-LiV 2O5, good lithium diffusion in V2O5, and increased electronic conductivity and electrolyte diffusion from the incorporated MWCNT web. © 2010 Elsevier B.V.

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