NASICON Li_1.3Al_0.3Ti_1.7(PO₄)₃ electrolyte coating enables stable cycling of Li-rich manganese-based cathode

Low-cost Li-rich manganese-based cathodes are promising for rechargeable Li-ion batteries due to their high capacity and operating voltage. However, their large-scale application is hindered by surface structural changes and oxygen release, which leads to irreversible capacity loss and poor cycling stability. This study investigates the use of solid electrolyte Li_1.3Al_0.3Ti_1.7(PO₄)₃ (LATP) with NASICON structure as a coating material for Li-rich manganese-based cathode Li_1.14Ni_0.27Co_0.03Mn_0.56O₂. LATP, known for its fast Li-ion conduction and excellent chemical stability, enhances Li-ion transport at the cathode–electrolyte interface and reduces the internal resistance of the cell. Our results show that LATP-coated Li-rich manganese cathodes have improved cycling performance and structural stability, highlighting the potential of LATP-coated Li-rich cathodes for high-performance Li-ion batteries.