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LiFePO4 as an optimum power cell material
Authors:LQ Sun  RH Cui  AF Jalbout  MJ Li  XM Pan  RS Wang  HM Xie
Affiliation:1. Institute of Functional Materials, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, PR China;2. NASA Astrobiology Institute and the Department of Chemistry, The University of Arizona, Tucson, AZ 85721, USA
Abstract:Nano-crystallized LiFePO4 has been synthesized with a simple three-step-synthesis technology in the presence of nano-ferric oxide as iron source and polyacence (PAS) as a reductive agent and high conductive carbon source. The use of PAS increases the conductivity and prevents the particles growth. The most feasible calcined temperature and time was investigated and the best cell performance was delivered by the sample calcined at 700 °C for 4 h. This material shows excellent specific capacity and cycle efficiency at high current rates, almost no capacity loss can be observed up to 100 cycles which make it more superior as an optimum power cell cathode material.
Keywords:LiFePO4  Polyacence  Lithium ion batteries  Power cells
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