A Single‐Pot Co‐Precipitation Synthesis Route for Ni‐Rich Layered Oxide Materials with High Cycling Stability

In this work we report variations of LiNi0.88Mn0.06Co0.06O2 synthesised through a single-pot oxalic acid co-precipitation route, in which all cation precursors were added the same step. The effects Al-doping, heat-treatment temperature and Li precursor excess investigated with physicochemical electrochemical characterisation. Phase pure well-ordered polycrystalline materials successfully for Al-doped undoped compositions. Undoped prepared at 750 °C 4 at% showed excellent cycling stability NMC||LTO cells an initial capacity 201 mAh/g 0.1 C 20 °C, retention 81 % after 415 cycles. LiNi0.88Mn0.04Co0.06Al0.02O2 LiNi0.88Mn0.06Co0.04Al0.02O2 synthesised, they similar performance to LiNi0.88Mn0.06Co0.06O2, but Al-doping via route resulted shorter cycle life. study outlines importance processing parameters achieve Ni-rich layered oxides long life without further surface modifications.