Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries

Al-inserted vanadium pentoxide (V2O5) nanofibers (Al-VNF) are synthesized by simple electrospinning technique. Powder X-ray diffraction (XRD) patterns confirm the formation of phase-pure structure. Elemental mapping and XPS studies are used to confirm chemical insertion of Al in VNF. Surface morphol...

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Main Authors:	Cheah, Yan Ling, Aravindan, Vanchiappan, Madhavi, Srinivasan
其他作者:	School of Materials Science & Engineering
格式:	Article
語言:	English
出版:	2012
主題:	DRNTU::Engineering::Materials
在線閱讀:	https://hdl.handle.net/10356/98804 http://hdl.handle.net/10220/8305
標簽:	添加標簽沒有標簽, 成為第一個標記此記錄!
機構:	Nanyang Technological University
語言:	English

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spelling	sg-ntu-dr.10356-988042020-09-26T21:47:18Z Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan School of Materials Science & Engineering TUM CREATE Centre for Electromobility DRNTU::Engineering::Materials Al-inserted vanadium pentoxide (V2O5) nanofibers (Al-VNF) are synthesized by simple electrospinning technique. Powder X-ray diffraction (XRD) patterns confirm the formation of phase-pure structure. Elemental mapping and XPS studies are used to confirm chemical insertion of Al in VNF. Surface morphological features of as-spun and sintered fibers with Al-insertion are investigated by field emission scanning electron microscopy (FE-SEM). Electrochemical Li-insertion behavior of Al-VNFs are explored as cathode in half-cell configuration (vs. Li) using cyclic voltammetry and galvanostatic charge-discharge studies. Al-VNF (Al0.5V2O5) shows an initial discharge capacity of ~250 mAh g–1 and improved capacity retention of >60% after 50 cycles at 0.1 C rate, whereas native VNF showed only ~40% capacity retention at room temperature. Enhanced high current rate and elevated temperature performance of Al-VNF (Al1.0V2O5) is observed with improved capacity retention (~70%) characteristics. Improved performance of Al-inserted VNF is mainly attributed to the retention of fibrous morphology, apart from structural stabilization during electrochemical cycling. Accepted version 2012-07-09T06:37:57Z 2019-12-06T19:59:49Z 2012-07-09T06:37:57Z 2019-12-06T19:59:49Z 2012 2012 Journal Article Cheah, Y. L., Aravindan, V., & Madhavi, S. (2012). Improved Elevated Temperature Performance of Al-intercalated V2O5 Electrospun Nanofibers for Lithium-ion Batteries. ACS Applied Materials & Interfaces, 4(6), 3270–3277. https://hdl.handle.net/10356/98804 http://hdl.handle.net/10220/8305 10.1021/am300616k 165377 en ACS applied materials & interfaces © 2012 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by ACS Applied Materials & Interfaces , American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1021/am300616k] 33 p. application/pdf
institution	Nanyang Technological University
building	NTU Library
country	Singapore
collection	DR-NTU
language	English
topic	DRNTU::Engineering::Materials
spellingShingle	DRNTU::Engineering::Materials Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries
description	Al-inserted vanadium pentoxide (V2O5) nanofibers (Al-VNF) are synthesized by simple electrospinning technique. Powder X-ray diffraction (XRD) patterns confirm the formation of phase-pure structure. Elemental mapping and XPS studies are used to confirm chemical insertion of Al in VNF. Surface morphological features of as-spun and sintered fibers with Al-insertion are investigated by field emission scanning electron microscopy (FE-SEM). Electrochemical Li-insertion behavior of Al-VNFs are explored as cathode in half-cell configuration (vs. Li) using cyclic voltammetry and galvanostatic charge-discharge studies. Al-VNF (Al0.5V2O5) shows an initial discharge capacity of ~250 mAh g–1 and improved capacity retention of >60% after 50 cycles at 0.1 C rate, whereas native VNF showed only ~40% capacity retention at room temperature. Enhanced high current rate and elevated temperature performance of Al-VNF (Al1.0V2O5) is observed with improved capacity retention (~70%) characteristics. Improved performance of Al-inserted VNF is mainly attributed to the retention of fibrous morphology, apart from structural stabilization during electrochemical cycling.
author2	School of Materials Science & Engineering
author_facet	School of Materials Science & Engineering Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan
format	Article
author	Cheah, Yan Ling Aravindan, Vanchiappan Madhavi, Srinivasan
author_sort	Cheah, Yan Ling
title	Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries
title_short	Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries
title_full	Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries
title_fullStr	Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries
title_full_unstemmed	Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries
title_sort	improved elevated temperature performance of al-intercalated v2o5 electrospun nanofibers for lithium-ion batteries
publishDate	2012
url	https://hdl.handle.net/10356/98804 http://hdl.handle.net/10220/8305
_version_	1681058469137874944

Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries

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