Abstract
Li2FeSiO4 has drawn attention recently as a cathode material due to its convincing features like the optimal working voltage, low toxicity, high theoretical capacity, high security, environmental friendliness, high elemental abundance, and low cost. However, this olivine structured Li2FeSiO4 may cause low electronic conductivity and lithium-ion diffusion coefficient, which limits its electrochemical performance. Therefore, many efforts have been made recently to overcome these challenges and to enhance the electrochemical performance of the Li2FeSiO4 cathode. The proper cation substitution on the Fe-site and Si-site can facilitate the easy migration of lithium-ion in the diffusion channels which results in increased intrinsic electronic conductivity. Thus, the single or multi-elements doping method would be a useful technique to improve the electrochemical properties of Li2FeSiO4. This article highlights the various doping effects on Li2FeSiO4 cathode material for lithium-ion batteries.
Published Version
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