Application of LiCoPO₄ Positive Electrode Material in All-Solid-State Lithium-Ion Battery

Abstract

Submicron particles of high voltage LiCoPO₄ are prepared by sucrose-aided combustion synthesise as a preliminary arrangement for the construction of all-solid-sate lithium-ion battery. The obtained LiCoPO₄ was assembled with Li₂O-Al₂O₃-TiO₂-P₂O₅ (LATP) solid electrolyte using spark plasma sintering (SPS) process in order to form enhanced electrical contacts. The reversible charge/discharge capacity of LiCoPO₄ was obtained by cyclic voltammetry with a sweep rate of 0.5 mV s⁻¹ at 150°C. It would be due to the enhanced interfacial contact between LiCoPO₄ and LATP electrolyte without any voids, which was observed by the cross-sectional SEM images.