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Ceramics international v.43 no.6, 2017년, pp.4821 - 4830   SCI SCIE SCOPUS
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Facile synthesis of micro-spherical LiMn0.7Fe0.3PO4/C cathodes with advanced cycle life and rate performance for lithium-ion battery

Yang, Li (Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China ); Wang, Yan (College of Computer Science and Technology, Southwest University for Nationalities, Chengdu 610041, PR China ); Wu, Jinhua (Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China ); Xiang, Mingwu (Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China ); Li, Jianlong (Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China ); Wang, Boya (Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China ); Zhang, Yun (Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China ); Wu, Hao (Department of Advanced Energy Materials, College of Materials Science and Engineering ); Liu, Heng ( );
  • 초록  

    Abstract A series of micro-spherical LiMn 0.7 Fe 0.3 PO 4 /C (LMFP) cathode materials are synthesized via co-precipitation method combining spray drying and solid-state reaction. All as-prepared materials are well-characterized to determine their crystal structure, morphology and electrochemical performance. All as-obtained LMFP materials correspond to orthorhombic olivine structure with Pbnm space group and show uniform porous spherical structure with an average particle size of 3μm and a carbon coating layer of about 3nm. In particular, the resulting LMFP material prepared at 600°C exhibits a high discharge capacity of 160mAhg −1 at 0.1C. Even at a high rate of 10C, it can still deliver 133mAhg −1 and maintain capacity retention of 84.9% after 200 cycles. The excellent electrochemical performance is ascribed to the synergetic effect of porous micro-spherical structure and uniform carbon coating layer.


  • 주제어

    Co-precipitation .   Spray drying .   Porous micro-spherical structure .   LiMn0.   7Fe0.   3PO4/C .   Lithium-ion batteries.  

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