LiNi_1-yCo_yO₂ Cathode Materials Synthesized by Wet Chemistry

Abstract

Various methods for the preparation of LiNi_1-yCo_yO₂ solid solution have been proposed because the synthetic condition gives great impact on the electrochemical characteristics of cathode materials [1–3]. Traditionally, compounds are synthesized using solid-state reactions which require prolonged process of the reacting species at high temperatures. Wet chemistry based sol-gel and colloidal precipitation techniques for synthesizing oxides has been applied recently [4–8]. The low-temperature route of preparation (aqueous solution chemistry) develops materials with submicron sized grains which favor the rate capability on charging/discharging the electrochemical cells [9].