Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84094
Full metadata record
DC FieldValueLanguage
dc.contributor.authorHartung, Steffenen
dc.contributor.authorBucher, Nicolasen
dc.contributor.authorFranklin, Joseph B.en
dc.contributor.authorWise, Anna M.en
dc.contributor.authorLim, Linda Y.en
dc.contributor.authorChen, Han-Yien
dc.contributor.authorWeker, Johanna Nelsonen
dc.contributor.authorMichel-Beyerle, Maria-Elisabethen
dc.contributor.authorToney, Michael F.en
dc.contributor.authorSrinivasan, Madhavien
dc.date.accessioned2017-07-20T03:40:29Zen
dc.date.accessioned2019-12-06T15:38:13Z-
dc.date.available2017-07-20T03:40:29Zen
dc.date.available2019-12-06T15:38:13Z-
dc.date.issued2016en
dc.identifier.citationHartung, S., Bucher, N., Franklin, J. B., Wise, A. M., Lim, L. Y., Chen, H.-Y., et al. (2016). Mechanism of Na+ Insertion in Alkali Vanadates and Its Influence on Battery Performance. Advanced Energy Materials, 6(9), 1502336-.en
dc.identifier.issn1614-6832en
dc.identifier.urihttps://hdl.handle.net/10356/84094-
dc.description.abstractSodium-ion batteries may become an alternative to the widespread lithium-ion technology due to cost and kinetic advantages provided that cyclability is improved. For this purpose, the interplay between electrochemical and structural processes is key and is demonstrated in this work for Na2.46V6O16 (NVO) and Li2.55V6O16 employing operando synchrotron X-ray diffraction. When NVO is cycled between 4.0 and 1.6 V, Na-ions reversibly occupy two crystallographic sites, which results in remarkable cyclability. Upon discharge to 1.0 V, however, Na-ions occupy also interstitial sites, inducing irreversible structural change with some loss of crystallinity concomitant with a decrease in capacity. Capacity fading increases with the ionic radius of the alkali ions (K+ > Na+ > Li+), suggesting that smaller ions stabilize the structure. This correlation of structural variation and electrochemical performance suggests a route toward improving cycling stability of a sodium-ion battery. Its essence is a minor Li+-retention in the A2+xV6O16 structure. Even though the majority of Li-ions are replaced by the abundant Na+, the residual Li-ions (≈10%) are sufficient to stabilize the layered structure, diminishing the irreversible structural damage. These results pave the way for further exploitation of the role of small ions in lattice stabilization that increases cycling performance.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.format.extent44 p.en
dc.language.isoenen
dc.relation.ispartofseriesAdvanced Energy Materialsen
dc.rights© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the author created version of a work that has been peer reviewed and accepted for publication by Advanced Energy Materials, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. 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: [http://dx.doi.org/10.1002/aenm.201502336].en
dc.subjectIn operandoen
dc.subjectIrreversible Na+-insertionen
dc.titleMechanism of Na+ Insertion in Alkali Vanadates and Its Influence on Battery Performanceen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.contributor.researchEnergy Research Institute @ NTU (ERI@N)en
dc.identifier.doi10.1002/aenm.201502336en
dc.description.versionAccepted versionen
item.grantfulltextopen-
item.fulltextWith Fulltext-
Appears in Collections:ERI@N Journal Articles
MSE Journal Articles
SPMS Journal Articles
Files in This Item:
File Description SizeFormat 
Mechanism of Na+ Insertion in Alkali Vanadates and Its Influence on Battery Performance.pdf8.05 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 20

24
Updated on Feb 14, 2025

Web of ScienceTM
Citations 10

25
Updated on Oct 28, 2023

Page view(s) 50

649
Updated on Feb 15, 2025

Download(s) 10

392
Updated on Feb 15, 2025

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.