Three-Dimensional Porous LiFePO 4 : Design, Architectures and High Per- formance for Lithium Ion Batteries

  • Yu F
  • Ge S
  • Li B
 et al. 
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The olivine-structured lithium ion phosphate (LiFePO 4) is one of the most competitive candidates of cathode materials for the sustainable lithium ion battery (LIB) systems. However, the major drawback of olivine-structured LiFePO 4 is the poor intrinsic electronic and lithium ion conductivities arising from the lack of mixed valency and the one-dimensional lithium ion diffusion, which influence its high electrochemical performance, especially high rate capability. Nano-structured LiFePO 4 materials offer a potential solution to enhance surface-to-volume ratio and reduce transport length for mobile charges, but they have high interfacial energy, aggregate easily and need more agglutinant in electrode, which seriously impact the electrochemical performance and practical applications of LiFePO 4 . Furthermore they con-tinue to experience limitations as energy and power requirements escalate with the evolution of technology. Recently, three-dimensional (3D) porous LiFePO 4 architectures have been widely designed and studied. This has led to increased in-terest in the development of cathode materials and processing capabilities necessary to enable high-performance, next-generation LIB system that can deliver large amounts of energy at high rates. In this review, we focus on 3D porous LiFePO 4 architectures for high power LIBs, summarize and discuss its structure, synthesis, electrochemical behaviors, mechanism, and the problems encountered in its application. The major goal is to highlight the recent progress of 3D po-rous LiFePO 4 architectures with high rate capability, high energy density and application.

Author-supplied keywords

  • Electrochemical performance
  • LiFePO 4
  • cathode material
  • inorganic functional material
  • lithium ion battery
  • three-dimensional porous

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  • Feng Yu

  • Shenguang Ge

  • Bing Li

  • Gengzhi Sun

  • Riguo Mei

  • Lianxi Zheng

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