Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process

Hierarchical vanadium oxide nanoflowers (V10O24·nH2O) were synthesized via a simple, high throughput method employing a fast electrochemical reaction of vanadium foil in NaCl aqueous solution, followed by an aging treatment at room temperature. During the electrochemical process, the anodic vanadium...

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Main Authors: Tang, Yuxin, Rui, Xianhong, Zhang, Yanyan, Dong, Zhili, Hng, Huey Hoon, Chen, Xiaodong, Yan, Qingyu, Chen, Zhong, Lim, Tuti Mariana
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/104639
http://hdl.handle.net/10220/17022
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1046392021-01-20T04:18:31Z Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process Tang, Yuxin Rui, Xianhong Zhang, Yanyan Dong, Zhili Hng, Huey Hoon Chen, Xiaodong Yan, Qingyu Chen, Zhong Lim, Tuti Mariana School of Civil and Environmental Engineering School of Materials Science and Engineering TUM CREATE Centre for Electromobility Energy Research Institute @ NTU (ERI@N) DRNTU::Engineering::Materials::Energy materials Hierarchical vanadium oxide nanoflowers (V10O24·nH2O) were synthesized via a simple, high throughput method employing a fast electrochemical reaction of vanadium foil in NaCl aqueous solution, followed by an aging treatment at room temperature. During the electrochemical process, the anodic vanadium foil is dissolved in the form of multi-valence vanadium ions into the solution, driven by the applied electrical field. After being oxidized, the VO2+ and VO2+ ions instantly react with the OH− in the electrolyte to form uniformly distributed vanadium oxide nanoparticles at a high solution temperature due to the exothermic nature of the reaction. Finally, nucleation and growth of one dimensional nanoribbons takes place on the surface of the nanoparticles during the aging process to form unique hierarchical V10O24·nH2O nanoflowers. Upon heat treatment, the hierarchical architecture of the vanadium pentoxide nanoflower morphology is maintained. Such a material provides porous channels, which facilitate fast ion diffusion and effective strain relaxation upon Li ion charge–discharge cycling. The electrochemical tests reveal that the V2O5 nanoflowers cathode could deliver high reversible specific capacities with 100% coulombic efficiency, especially at high C rates (e.g., 140 mAh g−1 at 10 C). 2013-10-30T03:03:04Z 2019-12-06T21:36:44Z 2013-10-30T03:03:04Z 2019-12-06T21:36:44Z 2013 2013 Journal Article Tang, Y., Rui, X., Zhang, Y., Lim, T. M., Dong, Z., Hng, H. H., et al. (2013). Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process. Journal of materials chemistry A, 1(1), 82-88. https://hdl.handle.net/10356/104639 http://hdl.handle.net/10220/17022 10.1039/c2ta00351a en Journal of materials chemistry A
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials::Energy materials
spellingShingle DRNTU::Engineering::Materials::Energy materials
Tang, Yuxin
Rui, Xianhong
Zhang, Yanyan
Dong, Zhili
Hng, Huey Hoon
Chen, Xiaodong
Yan, Qingyu
Chen, Zhong
Lim, Tuti Mariana
Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
description Hierarchical vanadium oxide nanoflowers (V10O24·nH2O) were synthesized via a simple, high throughput method employing a fast electrochemical reaction of vanadium foil in NaCl aqueous solution, followed by an aging treatment at room temperature. During the electrochemical process, the anodic vanadium foil is dissolved in the form of multi-valence vanadium ions into the solution, driven by the applied electrical field. After being oxidized, the VO2+ and VO2+ ions instantly react with the OH− in the electrolyte to form uniformly distributed vanadium oxide nanoparticles at a high solution temperature due to the exothermic nature of the reaction. Finally, nucleation and growth of one dimensional nanoribbons takes place on the surface of the nanoparticles during the aging process to form unique hierarchical V10O24·nH2O nanoflowers. Upon heat treatment, the hierarchical architecture of the vanadium pentoxide nanoflower morphology is maintained. Such a material provides porous channels, which facilitate fast ion diffusion and effective strain relaxation upon Li ion charge–discharge cycling. The electrochemical tests reveal that the V2O5 nanoflowers cathode could deliver high reversible specific capacities with 100% coulombic efficiency, especially at high C rates (e.g., 140 mAh g−1 at 10 C).
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Tang, Yuxin
Rui, Xianhong
Zhang, Yanyan
Dong, Zhili
Hng, Huey Hoon
Chen, Xiaodong
Yan, Qingyu
Chen, Zhong
Lim, Tuti Mariana
format Article
author Tang, Yuxin
Rui, Xianhong
Zhang, Yanyan
Dong, Zhili
Hng, Huey Hoon
Chen, Xiaodong
Yan, Qingyu
Chen, Zhong
Lim, Tuti Mariana
author_sort Tang, Yuxin
title Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
title_short Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
title_full Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
title_fullStr Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
title_full_unstemmed Vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
title_sort vanadium pentoxide cathode materials for high-performance lithium-ion batteries enabled by a hierarchical nanoflower structure via an electrochemical process
publishDate 2013
url https://hdl.handle.net/10356/104639
http://hdl.handle.net/10220/17022
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