Hofmann, MichaelMichaelHofmannNagler, FelixFelixNaglerKapuschinski, MartinaMartinaKapuschinskiGuntow, UweUweGuntowGiffin, Guinevere A.Guinevere A.Giffin2022-03-062022-03-062020https://publica.fraunhofer.de/handle/publica/26451410.1002/cssc.202001907The successful implementation of an aqueous-based electrode manufacturing process for nickel-rich cathode active materials is challenging due to their high water sensitivity. In this work, the surface of LiNi0.8Co0.15Al0.05O2 (NCA) was modified with a lithium phosphate coating to investigate its ability to protect the active material during electrode production. The results illustrate that the coating amount is crucial and a compromise has to be made between protection during electrode processing and sufficient electronic conductivity through the particle surface. Cells with water-based electrodes containing NCA with an optimized amount of lithium phosphate had a slightly lower specific discharge capacity than cells with conventional N-methyl-2-pyrrolidone-based electrodes. Nonetheless, the cells with optimized water-based electrodes could compete in terms of cycle life.enaqueous electrode processinglithium phosphate coatinglithium-ion batteryNi-rich cathode materialsustainable chemistry666540journal article