Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/130254
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dc.contributor.authorLi, D.en
dc.contributor.authorHuang, Y.en
dc.contributor.authorSharma, N.en
dc.contributor.authorChen, Z.en
dc.contributor.authorJia, D.en
dc.contributor.authorGuo, Z.en
dc.date.issued2012en
dc.identifier.citationPhysical Chemistry Chemical Physics, 2012; 14(10):3634-3639en
dc.identifier.issn1463-9076en
dc.identifier.issn1463-9084en
dc.identifier.urihttp://hdl.handle.net/2440/130254-
dc.description.abstractA composite cathode material for lithium ion battery applications, Mo-doped LiFePO(4)/C, is obtained through a facile and fast microwave-assisted synthesis method. Rietveld analysis of LiFePO(4)-based structural models using synchrotron X-ray diffraction data shows that Mo-ions substitute onto the Fe sites and displace Fe-ions to the Li sites. Supervalent Mo(6+) doping can act to introduce Li ion vacancies due to the charge compensation effect and therefore facilitate lithium ion diffusion during charging/discharging. Transmission electron microscope images demonstrate that the pure and doped LiFePO(4) nanoparticles were uniformly covered by an approximately 5 nm thin layer of graphitic carbon. Amorphous carbon on the graphitic carbon-coated pure and doped LiFePO(4) particles forms a three-dimensional (3D) conductive carbon network, effectively improving the conductivity of these materials. The combined effects of Mo-doping and the 3D carbon network dramatically enhance the electrochemical performance of these LiFePO(4) cathodes. In particular, Mo-doped LiFePO(4)/C delivers a reversible capacity of 162 mA h g(-1) at a current of 0.5 C and shows enhanced capacity retention compared to that of undoped LiFePO(4)/C. Moreover, the electrode exhibits excellent rate capability, with an associated high discharge capacity and good electrochemical reversibility.en
dc.description.statementofresponsibilityDan Li, Yudai Huang, Neeraj Sharma, Zhixin Chen, Dianzeng Jia and Zaiping Guoen
dc.language.isoenen
dc.publisherRoyal Society of Chemistryen
dc.rightsThis journal is © the Owner Societies 2012en
dc.subjectPhosphates; Carbon; Lithium; Iron; Molybdenum; Electrochemistry; Microwaves; Electric Power Suppliesen
dc.titleEnhanced electrochemical properties of LiFePO₄ by Mo-substitution and graphitic carbon-coating via a facile and fast microwave-assisted solid-state reactionen
dc.title.alternativeEnhanced electrochemical properties of LiFePO(4) by Mo-substitution and graphitic carbon-coating via a facile and fast microwave-assisted solid-state reactionen
dc.typeJournal articleen
dc.identifier.doi10.1039/c2cp24062aen
pubs.publication-statusPublisheden
dc.identifier.orcidGuo, Z. [0000-0003-3464-5301]en
Appears in Collections:Chemistry and Physics publications

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