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

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

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dc.contributor.author Cheah, Yan Ling.
dc.contributor.author Aravindan, Vanchiappan.
dc.contributor.author Madhavi, Srinivasan.
dc.date.accessioned 2012-07-09T06:37:57Z
dc.date.available 2012-07-09T06:37:57Z
dc.date.copyright 2012
dc.date.issued 2012-07-09
dc.identifier.citation 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.
dc.identifier.uri http://hdl.handle.net/10220/8305
dc.description.abstract 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.
dc.format.extent 33 p.
dc.language.iso en
dc.relation.ispartofseries ACS applied materials & interfaces
dc.rights © 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 ]
dc.subject DRNTU::Engineering::Materials.
dc.title Improved elevated temperature performance of Al-intercalated V2O5 electrospun nanofibers for lithium-ion batteries.
dc.type Journal Article
dc.contributor.research TUM-CREATE Center for Electromobility
dc.contributor.research Energy Research Institute @ NTU (ERI@N)
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1021/am300616k
dc.description.version Accepted version

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