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Article: Spinel LiMn2O4 Electrode in Room Temperature Molten Salt

TitleSpinel LiMn2O4 Electrode in Room Temperature Molten Salt
Authors
KeywordsLithium Battery
Lithium Manganese Oxide
Room Temperature Molten Salt
Issue Date1999
PublisherElectrochemical Society of Japan. The Journal's web site is located at http://www.electrochem.jp/journal/list.html
Citation
Electrochemistry, 1999, v. 67 n. 6, p. 713-717 How to Cite?
AbstractRoom Temperature Molten Salt (RTMS) based on 1-methyl-3-ethylimidazolium chloride / AlCl3 /LiAlCl 4 is recently shown to provide a promising medium for lithium battery clue to its high current capability and inertness towards active material. In the present work, the electrochemical properties of a LixMn2O4 electrode in RTMS, the most commonly used positive electrode material, were investigated by cyclic voltammetry, coulometric titration and constant current cycling. From cyclic voltarnmetric studies, the Li xMn2O4 electrode in RTMS was found to exhibit the same electrochemical behavior as in other non-aqueous electrolytes. However, a new and very large irreversible anodic peak was found due to the insertion of AlCl4 - into the carbon current collector. During coulometric studies, coulombic efficiencies greater than 96 % were obtained at composition close to x=1 in LixMn2O4. However, for Range I (0
Persistent Identifierhttp://hdl.handle.net/10722/167828
ISSN
2015 Impact Factor: 0.791
2015 SCImago Journal Rankings: 0.385
References

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_US
dc.contributor.authorZhou, Ren_US
dc.date.accessioned2012-10-08T03:12:01Z-
dc.date.available2012-10-08T03:12:01Z-
dc.date.issued1999en_US
dc.identifier.citationElectrochemistry, 1999, v. 67 n. 6, p. 713-717en_US
dc.identifier.issn1344-3542en_US
dc.identifier.urihttp://hdl.handle.net/10722/167828-
dc.description.abstractRoom Temperature Molten Salt (RTMS) based on 1-methyl-3-ethylimidazolium chloride / AlCl3 /LiAlCl 4 is recently shown to provide a promising medium for lithium battery clue to its high current capability and inertness towards active material. In the present work, the electrochemical properties of a LixMn2O4 electrode in RTMS, the most commonly used positive electrode material, were investigated by cyclic voltammetry, coulometric titration and constant current cycling. From cyclic voltarnmetric studies, the Li xMn2O4 electrode in RTMS was found to exhibit the same electrochemical behavior as in other non-aqueous electrolytes. However, a new and very large irreversible anodic peak was found due to the insertion of AlCl4 - into the carbon current collector. During coulometric studies, coulombic efficiencies greater than 96 % were obtained at composition close to x=1 in LixMn2O4. However, for Range I (0 <x<1), a rapid decrease in coulombic efficiency was observed at x less than 0.6. For Range II (1<x<2), close to 86 % of the electrode material could be used. Thus, Range II was selected for battery application. For cycling at Range I, greater than 95% cycling efficiencies were obtained up to insertion / extraction capacities of 60 mAh/g, whereas at Range II, 98% cycling efficiencies at the first 20 cycles were obtained up to 120 mAh/g. The difference was attributed to the irreversible insertion of AlCl 4 - anions into the carbon current collector at high anodic potential and hence less lithium was extracted from the LixMn2O4, electrode in 0<x<1. The electrochemical performance of the LiMn2O4 electrode as positive electrode material for secondary lithium battery at different lithium insertion in RTMS was discussed in the light of the results obtained.en_US
dc.languageengen_US
dc.publisherElectrochemical Society of Japan. The Journal's web site is located at http://www.electrochem.jp/journal/list.htmlen_US
dc.relation.ispartofElectrochemistryen_US
dc.subjectLithium Batteryen_US
dc.subjectLithium Manganese Oxideen_US
dc.subjectRoom Temperature Molten Salten_US
dc.titleSpinel LiMn2O4 Electrode in Room Temperature Molten Salten_US
dc.typeArticleen_US
dc.identifier.emailFung, YS:ysfung@hku.hken_US
dc.identifier.authorityFung, YS=rp00697en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0043186045en_US
dc.identifier.hkuros54338-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0043186045&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume67en_US
dc.identifier.issue6en_US
dc.identifier.spage713en_US
dc.identifier.epage717en_US
dc.publisher.placeJapanen_US
dc.identifier.scopusauthoridFung, YS=13309754700en_US
dc.identifier.scopusauthoridZhou, R=55160919500en_US

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