Please use this identifier to cite or link to this item: https://doi.org/10.1021/cm0348287
DC FieldValue
dc.titleCarbon-Coated Nanophase CaMoO4 as Anode Material for Li Ion Batteries
dc.contributor.authorSharma, N.
dc.contributor.authorShaju, K.M.
dc.contributor.authorSubba Rao, G.V.
dc.contributor.authorChowdari, B.V.R.
dc.contributor.authorDong, Z.L.
dc.contributor.authorWhite, T.J.
dc.date.accessioned2014-10-16T09:17:26Z
dc.date.available2014-10-16T09:17:26Z
dc.date.issued2004-02-10
dc.identifier.citationSharma, N., Shaju, K.M., Subba Rao, G.V., Chowdari, B.V.R., Dong, Z.L., White, T.J. (2004-02-10). Carbon-Coated Nanophase CaMoO4 as Anode Material for Li Ion Batteries. Chemistry of Materials 16 (3) : 504-512. ScholarBank@NUS Repository. https://doi.org/10.1021/cm0348287
dc.identifier.issn08974756
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/95925
dc.description.abstractPure and carbon (C)-coated CaMoO4 were synthesized by solution precipitation and sol-gel methods, and their electrochemical properties were studied vs Li by galvanostatic cycling and cyclic voltammetry (CV). Combined X-ray diffraction, SEM, and TEM results revealed the formation of nanocrystalline particles with the scheelite structure, the morphology being a function of the synthetic procedure. TEM of 10% C-coated CaMoO4 shows the amorphous nature of carbon on the crystalline particles with a thickness of 8-12 nm. Galvanostatic data in the voltage range of 0.005-2.5 V up to 50 cycles at a rate of 60 mA/g revealed that the 10% C-coated CaMoO 4 gave the highest reversible capacities. At the 20th discharge cycle, the capacity values (mA h/g) are as follows: solution precipitated, 190; sol-gel, 268; 5% C-coated, 401; and 10% C-coated, 508. The latter value corresponds to 3.8 mol of recyclable Li. The improvement in the interparticle electronic conductivity imparted by the C-coating led to superior performance. The Coulombic efficiency for all the compositions is >98%. Galvanostatic cycling results are supplemented by the CV data. A plausible mechanism for charge-discharge cycling has been proposed.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/cm0348287
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1021/cm0348287
dc.description.sourcetitleChemistry of Materials
dc.description.volume16
dc.description.issue3
dc.description.page504-512
dc.description.codenCMATE
dc.identifier.isiut000188804700021
Appears in Collections:Staff Publications

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