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https://hdl.handle.net/2440/130254
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dc.contributor.author | Li, D. | - |
dc.contributor.author | Huang, Y. | - |
dc.contributor.author | Sharma, N. | - |
dc.contributor.author | Chen, Z. | - |
dc.contributor.author | Jia, D. | - |
dc.contributor.author | Guo, Z. | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Physical Chemistry Chemical Physics, 2012; 14(10):3634-3639 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.issn | 1463-9084 | - |
dc.identifier.uri | http://hdl.handle.net/2440/130254 | - |
dc.description.abstract | A 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. | - |
dc.description.statementofresponsibility | Dan Li, Yudai Huang, Neeraj Sharma, Zhixin Chen, Dianzeng Jia and Zaiping Guo | - |
dc.language.iso | en | - |
dc.publisher | Royal Society of Chemistry | - |
dc.rights | This journal is © the Owner Societies 2012 | - |
dc.source.uri | http://dx.doi.org/10.1039/c2cp24062a | - |
dc.subject | Phosphates | - |
dc.subject | Carbon | - |
dc.subject | Lithium | - |
dc.subject | Iron | - |
dc.subject | Molybdenum | - |
dc.subject | Electrochemistry | - |
dc.subject | Microwaves | - |
dc.subject | Electric Power Supplies | - |
dc.title | Enhanced electrochemical properties of LiFePO₄ by Mo-substitution and graphitic carbon-coating via a facile and fast microwave-assisted solid-state reaction | - |
dc.title.alternative | Enhanced electrochemical properties of LiFePO(4) by Mo-substitution and graphitic carbon-coating via a facile and fast microwave-assisted solid-state reaction | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1039/c2cp24062a | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Guo, Z. [0000-0003-3464-5301] | - |
Appears in Collections: | Aurora harvest 4 Chemistry and Physics publications |
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