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Article: Electrodeposited tin coating as negative electrode material for lithium-ion battery in room temperature molten salt

TitleElectrodeposited tin coating as negative electrode material for lithium-ion battery in room temperature molten salt
Authors
KeywordsChemistry
Electrochemistry
Issue Date2002
PublisherElectrochemical Society, Inc. The Journal's web site is located at http://ojps.aip.org/JES
Citation
Journal Of The Electrochemical Society, 2002, v. 149 n. 3, p. A319-A324 How to Cite?
AbstractA new room temperature molten salt (RTMS) [1-methyl-3-ethylimidazolium/AlCl3/SnCl2 (3:2:0.5)] was developed for depositing tin on a copper electrode. Different tin crystallites were deposited at different temperatures, giving widely different performances of the assembled lithium cell [Sn (Cu)/LiCl buffered MEICl-AlCl3 RTMS/lithium]. Tin film deposited at 50°C or higher gave a more desirable crystal structure and an improved performance than films obtained at lower temperatures. Both cyclic voltammetry and galvanostatic cycling show the formation of three major lithium-tin alloy phases corresponding to the phase transition of LiSn/Li7Sn3, Li13Sn5/Li7Sn2, and Li7Sn2/Li22Sn5. Increases in the charging and discharging capacities were found with the deposition of higher lithium-rich tin alloys, though at the degradation of the irreversible capacity at the first cycle. The discharging capacity decreased rapidly, producing loose, expanded, and irregular crystallites upon cycling at a high current density (cd) (1.0 mA/cm2). However, an average capacity of 140 mAh/g, coulombic efficiency around 85%, and more than 200 cycles were obtained at a low cd (0.4 mA/cm2). The improvement is attributed to the deposition of small and regular tin crystallites that allows reversible insertion and removal of lithium from a more stable crystal structure without a significant volume change during cycling.
Persistent Identifierhttp://hdl.handle.net/10722/44614
ISSN
2015 Impact Factor: 3.014
2015 SCImago Journal Rankings: 1.157
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_HK
dc.contributor.authorZhu, DRen_HK
dc.date.accessioned2007-10-30T06:05:46Z-
dc.date.available2007-10-30T06:05:46Z-
dc.date.issued2002en_HK
dc.identifier.citationJournal Of The Electrochemical Society, 2002, v. 149 n. 3, p. A319-A324en_HK
dc.identifier.issn0013-4651en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44614-
dc.description.abstractA new room temperature molten salt (RTMS) [1-methyl-3-ethylimidazolium/AlCl3/SnCl2 (3:2:0.5)] was developed for depositing tin on a copper electrode. Different tin crystallites were deposited at different temperatures, giving widely different performances of the assembled lithium cell [Sn (Cu)/LiCl buffered MEICl-AlCl3 RTMS/lithium]. Tin film deposited at 50°C or higher gave a more desirable crystal structure and an improved performance than films obtained at lower temperatures. Both cyclic voltammetry and galvanostatic cycling show the formation of three major lithium-tin alloy phases corresponding to the phase transition of LiSn/Li7Sn3, Li13Sn5/Li7Sn2, and Li7Sn2/Li22Sn5. Increases in the charging and discharging capacities were found with the deposition of higher lithium-rich tin alloys, though at the degradation of the irreversible capacity at the first cycle. The discharging capacity decreased rapidly, producing loose, expanded, and irregular crystallites upon cycling at a high current density (cd) (1.0 mA/cm2). However, an average capacity of 140 mAh/g, coulombic efficiency around 85%, and more than 200 cycles were obtained at a low cd (0.4 mA/cm2). The improvement is attributed to the deposition of small and regular tin crystallites that allows reversible insertion and removal of lithium from a more stable crystal structure without a significant volume change during cycling.en_HK
dc.format.extent8023153 bytes-
dc.format.extent1827 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherElectrochemical Society, Inc. The Journal's web site is located at http://ojps.aip.org/JESen_HK
dc.relation.ispartofJournal of the Electrochemical Societyen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of Electrochemical Society. Copyright © Electrochemical Society, Inc.en_HK
dc.rightsReproduced with permission from Journal of Electrochemical Society, 2002, v. 149 n. 3, p. A319-A324. Copyright 2002, The Electrochemical Society. Permission is not needed if figures and/or tables from one ECS publication will be reused in another forthcoming ECS publicationen_HK
dc.subjectChemistryen_HK
dc.subjectElectrochemistryen_HK
dc.titleElectrodeposited tin coating as negative electrode material for lithium-ion battery in room temperature molten salten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0013-4651&volume=149&issue=3&spage=A319&epage=A324&date=2002&atitle=Electrodeposited+tin+coating+as+negative+electrode+material+for+lithium-ion+battery+in+room+temperature+molten+salten_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1149/1.1448501en_HK
dc.identifier.scopuseid_2-s2.0-0036503758en_HK
dc.identifier.hkuros68495-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036503758&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume149en_HK
dc.identifier.issue3en_HK
dc.identifier.spageA319en_HK
dc.identifier.epageA324en_HK
dc.identifier.isiWOS:000174211100015-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridZhu, DR=7403599128en_HK

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