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Journal of Inorganic Materials

Journal of Inorganic Materials >

2006 , Vol. 21 >Issue 4: 880 - 884

DOI: https://doi.org/10.3724/SP.J.1077.2006.00880

Research Paper

Structure and Characterization of LiFe0.99M0.01PO4/C Electrodes

  • YANG Shu-Ting ,
  • LI Ting-Ju
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  • 1. Department of Materials Engineering, Dalian University of Technology, Dalian 116024, China;
    2. College of Chemistry and Environmental Science, Henan Normal University,
    Xinxiang 453007, China

Received date: 2005-08-15

  Revised date: 2005-10-31

  Online published: 2006-07-20

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Abstract

In latest studies we confirmed that the PAM (polyacrylamide) templated LiFePO4/C composite was nano-structured with better rate property and higher specific capacity, compared with the undoped LiFePO4. In this article we further synthesized metal ions doped phosphates by this templating method, and all the capacities of those LiFe0.99M0.01PO4/C (M=Nd3+、Co3+、Cr3+、Mn3+) composites were enhanced. When discharging at C/3 rate the capacity of LiFePO4/C composite was only 108mAh·g-1, while those of the doped LiFe0.99M0.01PO4/C were respectively 140, 129, 120 and 115mAh·g-1. And the cycliabilities were also stable. Researches show that the conductivities of those doped materials are improved by 5～7 magnitude, which are close to those in references. XRD
patterns show that those doped materials still remain their ordered olivine structure.

Key words： lithium ion battery; cathode material; LiFePO4; doping

Cite this article

YANG Shu-Ting , LI Ting-Ju . Structure and Characterization of LiFe0.99M0.01PO4/C Electrodes[J]. Journal of Inorganic Materials, 2006 , 21(4) : 880 -884 . DOI: 10.3724/SP.J.1077.2006.00880

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