Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0013-4686(02)00594-7
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dc.titleEffect of Cr dopant on the cathodic behavior of LiCoO2
dc.contributor.authorMadhavi, S.
dc.contributor.authorSubba Rao, G.V.
dc.contributor.authorChowdari, B.V.R.
dc.contributor.authorLi, S.F.Y.
dc.date.accessioned2014-10-16T08:26:42Z
dc.date.available2014-10-16T08:26:42Z
dc.date.issued2002-12-11
dc.identifier.citationMadhavi, S., Subba Rao, G.V., Chowdari, B.V.R., Li, S.F.Y. (2002-12-11). Effect of Cr dopant on the cathodic behavior of LiCoO2. Electrochimica Acta 48 (3) : 219-226. ScholarBank@NUS Repository. https://doi.org/10.1016/S0013-4686(02)00594-7
dc.identifier.issn00134686
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/93644
dc.description.abstractCompounds of the formula LiCo1-yCryO2 (0.0≤y≤0.20 and y=1.0) have been synthesized by high temperature solid-state reaction and were characterized by XRD and FT-IR. Hexagonal a and c lattice parameters increase with increasing y as expected from ionic size effects. Cyclic voltammograms reveal that the phase transformation occurring at x=0.5 in Li1-x(Co1-yCry)O2 is suppressed for y=0.05 and 0.10. Low-current (0.01 C; 1 C=140 mA g-1) galvanostatic charging curves show that the deintercalation voltage for y=0.05 and 0.10 decrease for a given x as compared to LiCoO2. Galvanostatic charge-discharge cycling of the Li(Co1-yCry)O2 cathodes at 0.14 C and 2.7-4.3 V (vs. Li) show that increasing amount of chromium content in the LiCoO2 lattice drastically reduces the amount of Li that can be reversibly cycled. Ex-situ XRD of the cycled cathodes show that slight cation-mixing occurs in the layered structure for y=0.05 and 0.10 and could be the reason for their poor electrochemical performance. Reversible Li intercalation/deintercalation is not possible in LiCrO2 in the voltage range 2.7-4.3 V. © 2002 Published by Elsevier Science Ltd.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0013-4686(02)00594-7
dc.sourceScopus
dc.subjectCathodes
dc.subjectDoping
dc.subjectLiCoO2
dc.subjectLiCrO2
dc.subjectLithium ion batteries
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.contributor.departmentPHYSICS
dc.description.doi10.1016/S0013-4686(02)00594-7
dc.description.sourcetitleElectrochimica Acta
dc.description.volume48
dc.description.issue3
dc.description.page219-226
dc.description.codenELCAA
dc.identifier.isiut000179414200001
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