Electrochemical properties of carbon coated LiFePO4 cathode materials

Carbon coated lithium iron phosphates were prepared by a carbon aerogel synthesis process, through which LiFePO4 particles were embedded in amorphous carbon. The carbon coating effect can significantly enhance the electronic conductivity of LiFePO4. The electrochemical properties of the as-prepared LiFePO4 cathode materials were systematically characterised. The carbon coated LiFePO4 cathode demonstrated a high capacity and stable cyclability.

[1]  Konstantin Konstantinov,et al.  Conductivity improvements to spray-produced LiFePO4 by addition of a carbon source , 2004 .

[2]  S. Dou,et al.  Characterization of LiMxFe1–xPO4 (M = Mg, Zr, Ti) Cathode Materials Prepared by the Sol-Gel Method , 2004 .

[3]  S. Dou,et al.  Physical and electrochemical properties of doped lithium iron phosphate electrodes , 2004 .

[4]  Yet-Ming Chiang,et al.  Electronically conductive phospho-olivines as lithium storage electrodes , 2002, Nature materials.

[5]  Robert Kostecki,et al.  Effect of surface carbon structure on the electrochemical performance of LiFePO{sub 4} , 2003 .

[6]  Yoji Sakurai,et al.  Characterization of LiFePO4 as the cathode material for rechargeable lithium batteries , 2001 .

[7]  R. Pekala,et al.  Organic aerogels from the polycondensation of resorcinol with formaldehyde , 1989 .

[8]  J. Barker,et al.  Lithium Iron(II) Phospho-olivines Prepared by a Novel Carbothermal Reduction Method , 2003 .

[9]  D. D. Werstler Quantitative 13C n.m.r. characterization of aqueous formaldehyde resins: 2. Resorcinol-formaldehyde resins , 1986 .

[10]  Pier Paolo Prosini,et al.  Long-term cyclability of nanostructured LiFePO4 , 2003 .

[11]  Linda F. Nazar,et al.  Approaching Theoretical Capacity of LiFePO4 at Room Temperature at High Rates , 2001 .

[12]  Sylvain Franger,et al.  LiFePO4 Synthesis Routes for Enhanced Electrochemical Performance , 2002 .

[13]  Bruno Scrosati,et al.  A Novel Concept for the Synthesis of an Improved LiFePO4 Lithium Battery Cathode , 2002 .

[14]  John B. Goodenough,et al.  Lithium insertion into Fe2(SO4)3 frameworks , 1989 .

[15]  John B. Goodenough,et al.  Effect of Structure on the Fe3 + / Fe2 + Redox Couple in Iron Phosphates , 1997 .

[16]  P. Prosini,et al.  Improved electrochemical performance of a LiFePO4-based composite cathode , 2001 .

[17]  F. L. Cras,et al.  Optimized Lithium Iron Phosphate for High-Rate Electrochemical Applications , 2004 .

[18]  G. Righini,et al.  Versatile Synthesis of Carbon-Rich LiFePO4 Enhancing Its Electrochemical Properties , 2004 .

[19]  Ho Gi Kim,et al.  Surface modification by silver coating for improving electrochemical properties of LiFePO4 , 2004 .

[20]  John O. Thomas,et al.  The source of first-cycle capacity loss in LiFePO4 , 2001 .

[21]  K. S. Nanjundaswamy,et al.  Phospho‐olivines as Positive‐Electrode Materials for Rechargeable Lithium Batteries , 1997 .

[22]  Stefano Passerini,et al.  A New Synthetic Route for Preparing LiFePO4 with Enhanced Electrochemical Performance , 2002 .

[23]  Vladimir G. Tsirelson,et al.  Multipole analysis of the electron density in triphylite, LiFePO4, using X‐ray diffraction data , 1993 .