Toward Enhanced Electronic and Ionic Conductivity in Olivine LiCoPO₄ Thin Film Electrode Material for 5 V Lithium Batteries: Effect of LiCo₂P₃O₁₀ Impurity Phase

Controlled off-stoichiometry is induced in 5 V olivine LiCoPO4 battery electrode material to overcome its insulating properties through the incorporation of lithium cobalt tripolyphosphate. An excellent electrochemical activity is achieved in this tailored carbon-free material. The electronic structure of the polyanionic compound, the Co2+/Co3+ redox energy, and quantification of the inductive effect are provided. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.