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Synthesis of a porous sheet-like V₂O₅-CNT nanocomposite using an ice-templating 'bricks-and-mortar' assembly approach as a high-capacity, long cyclelife cathode material for lithium-ion batteries

Cheng, Jianli, Gu, Guifang, Guan, Qun, Razal, Joselito M., Wang, Zhiyu, Li, Xulian and Wang, Bin 2016, Synthesis of a porous sheet-like V₂O₅-CNT nanocomposite using an ice-templating 'bricks-and-mortar' assembly approach as a high-capacity, long cyclelife cathode material for lithium-ion batteries, Journal of materials chemistry A, vol. 4, no. 7, pp. 2729-2737, doi: 10.1039/c5ta10414a.

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Title Synthesis of a porous sheet-like V₂O₅-CNT nanocomposite using an ice-templating 'bricks-and-mortar' assembly approach as a high-capacity, long cyclelife cathode material for lithium-ion batteries
Author(s) Cheng, Jianli
Gu, Guifang
Guan, Qun
Razal, Joselito M.
Wang, Zhiyu
Li, Xulian
Wang, Bin
Journal name Journal of materials chemistry A
Volume number 4
Issue number 7
Start page 2729
End page 2737
Total pages 9
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2016
ISSN 2050-7488
2050-7496
Keyword(s) Nanostructures
Energy storage
Materials chemistry
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Chemistry
Materials Science
ELECTROCHEMICAL ENERGY-STORAGE
HIGH-PERFORMANCE
HOLLOW MICROSPHERES
HIGH-POWER
ONE-POT
CAPABILITY
ELECTRODES
COMPOSITE
GELS
INTERCALATION
Summary Tailoring the nanostructures of electrode materials is an effective way to enhance their electrochemical performance for energy storage. Herein, an ice-templating "bricks-and-mortar" assembly approach is reported to make ribbon-like V2O5 nanoparticles and CNTs integrated into a two-dimensional (2D) porous sheet-like V2O5-CNT nanocomposite. The obtained sheet-like V2O5-CNT nanocomposite possesses unique structural characteristics, including a hierarchical porous structure, 2D morphology, large specific surface area and internal conducting networks, which lead to superior electrochemical performances in terms of long-term cyclability and significantly enhanced rate capability when used as a cathode material for LIBs. The sheet-like V2O5-CNT nanocomposite can charge/discharge at high rates of 5C, 10C and 20C, with discharge capacities of approximately 240 mA h g-1, 180 mA h g-1, and 160 mA h g-1, respectively. It also retains 71% of the initial discharge capacity after 300 cycles at a high rate of 5C, with only 0.097% capacity loss per cycle. The rate capability and cycling performance of the sheet-like V2O5-CNT nanocomposite are significantly better than those of commercial V2O5 and most of the reported V2O5 nanocomposite.
Language eng
DOI 10.1039/c5ta10414a
Field of Research 091202 Composite and Hybrid Materials
100708 Nanomaterials
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID FT130100380
Copyright notice ©2016, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083894

Document type: Journal Article
Collection: Institute for Frontier Materials
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