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Size-dependent surface phase change of lithium iron phosphate during carbon coating.
Wang, Jiajun; Yang, Jinli; Tang, Yongji; Liu, Jian; Zhang, Yong; Liang, Guoxian; Gauthier, Michel; Chen-Wiegart, Yu-chen Karen; Norouzi Banis, Mohammad; Li, Xifei; Li, Ruying; Wang, Jun; Sham, T K; Sun, Xueliang.
Afiliación
  • Wang J; 1] Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9 [2] Photon Sciences Directorate, Brookhaven National Laboratory, Building 744, Upton, New York 11973, USA.
  • Yang J; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
  • Tang Y; 1] Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9 [2] Department of Chemistry, Western University, London, Ontario, Canada N6A 5B7.
  • Liu J; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
  • Zhang Y; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
  • Liang G; Clariant (Canada), 280 ave. Liberté, Candiac, Québec, Canada J5R 6X1.
  • Gauthier M; Clariant (Canada), 280 ave. Liberté, Candiac, Québec, Canada J5R 6X1.
  • Chen-Wiegart YC; Photon Sciences Directorate, Brookhaven National Laboratory, Building 744, Upton, New York 11973, USA.
  • Norouzi Banis M; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
  • Li X; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
  • Li R; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
  • Wang J; Photon Sciences Directorate, Brookhaven National Laboratory, Building 744, Upton, New York 11973, USA.
  • Sham TK; Department of Chemistry, Western University, London, Ontario, Canada N6A 5B7.
  • Sun X; Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada N6A 5B9.
Nat Commun ; 5: 3415, 2014 Mar 05.
Article en En | MEDLINE | ID: mdl-24594650
Carbon coating is a simple, effective and common technique for improving the conductivity of active materials in lithium ion batteries. However, carbon coating provides a strong reducing atmosphere and many factors remain unclear concerning the interface nature and underlying interaction mechanism that occurs between carbon and the active materials. Here, we present a size-dependent surface phase change occurring in lithium iron phosphate during the carbon coating process. Intriguingly, nanoscale particles exhibit an extremely high stability during the carbon coating process, whereas microscale particles display a direct visualization of surface phase changes occurring at the interface at elevated temperatures. Our findings provide a comprehensive understanding of the effect of particle size during carbon coating and the interface interaction that occurs on carbon-coated battery material--allowing for further improvement in materials synthesis and manufacturing processes for advanced battery materials.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2014 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2014 Tipo del documento: Article País de afiliación: Estados Unidos