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In situ carbon coated Li<inf>2</inf>MnSiO<inf>4</inf>/C composites as cathodes for enhanced performance li-ion batteries

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cris.author.scopus-author-id55250425900
cris.author.scopus-author-id6701776259
cris.author.scopus-author-id7402689941
cris.author.scopus-author-id55634111900
dc.contributor.authorBhaskar, Akkisetty
dc.contributor.authorDeepa, Melepurath
dc.contributor.authorRao, T. N.
dc.contributor.authorVaradarajuc, U. V.
dc.date.accessioned2023-09-20T05:17:16Z
dc.date.available2023-09-20T05:17:16Z
dc.date.issued01-12-2012
dc.description.abstractAn in-situ carbon coated Li2MnSiO4/C composite was synthesized by a nanocomposite gel precursor route using starch as the carbon source. Our approach enabled a uniform coating of amorphous carbon on Li 2MnSiO4 with an orthorhombic crystalline structure, which was confirmed by electron microscopy, X-ray diffraction and Raman studies. Conducting-atomic force microscopy (C-AFM) images also revealed the presence of high current interconnected domains in the composite, indicating the ability of the carbon coating to facilitate electron movement. Galvanostatic charge-discharge studies demonstrated outstanding initial charge and discharge capacities, respectively, of 330 and 195 mAh g-1 at 0.05 C-rate for the composite, and after 30 cycles a reversible capacity of 115 mAh g -1 was retained. The electrochemical performance of the neat silicate was dismal (10.6 mAh g-1 at 0.05 C-rate), which again reiterated the role of carbon in improving the conduction and Li-ion storage capacity of the silicate. An insignificant change in charge transfer resistance, with cycling, as inferred from impedance spectroscopy illustrated that charge transfer and transport processes remain facile with cycling, thus demonstrating Li 2MnSiO4/C to be promising cathode Li-ion batteries. © 2012 The Electrochemical Society.
dc.identifier.doi10.1149/2.042212jes
dc.identifier.issn134651
dc.identifier.scopus2-s2.0-84875544624
dc.identifier.urihttps://apicris.irins.org/handle/IITM2023/40144
dc.relation.ispartofseriesJournal of the Electrochemical Society
dc.sourceJournal of the Electrochemical Society
dc.titleIn situ carbon coated Li<inf>2</inf>MnSiO<inf>4</inf>/C composites as cathodes for enhanced performance li-ion batteries
dc.typeJournal
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.volume159
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation#PLACEHOLDER_PARENT_METADATA_VALUE#
person.affiliation.cityKandi
person.affiliation.cityHyderabad
person.affiliation.cityChennai
person.affiliation.id60103917
person.affiliation.id60076056
person.affiliation.id60025757
person.affiliation.nameIndian Institute of Technology Hyderabad
person.affiliation.nameInternational Advanced Research Centre for Powder Metallurgy and New Materials, Hyderabad
person.affiliation.nameIndian Institute of Technology Madras
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