Influence of the particle size of the Ni-rich cathode material on the electrochemical properties for all solid-state batteries

Recently, all-solid-state lithium ion batteries (ASLBs) have emerged as the next generation lithium ion batteries due to safety issue for electric vehicles and energy storage system. This application can be achieved through layered structure cathode material of Li[Ni0.8Co0.1Mn0.1]O2, (NCM811) with high specific capacity and composite solid electrolyte. The composite solid electrolyte is composed by poly ethylene oxide (PEO) based polymer solid electrolyte and garnet type oxide based Li6.75La3Zr2Al0.25O12, (LLZO-Al) solid electrolyte. Here, in this article, we describe the effect of improved electrochemical performance on the controlling particle size of Ni-rich cathode material for ASLBs with oxide-based solid electrolyte. Therefore, the structure and electrochemical performance of Ni-rich cathode material in ASLBs were investigated by using powder X-ray diffraction analysis, Brunauer–Emmett–Teller adsorption experiments, electrochemical impedance spectroscopy, and galvanostatic measurements.