Structural evolution of plasma sprayed amorphous Li4Ti5O12 electrode and ceramic/polymer composite electrolyte during electrochemical cycle of quasi-solid-state lithium battery

Abstract A quasi-solid-state lithium battery is assembled by plasma sprayed amorphous Li 4 Ti 5 O 12 (LTO) electrode and ceramic/polymer composite electrolyte with a little liquid (10 µL/cm 2 ) to provide the outstanding electrochemical stability better normal interface contact. Scanning Electron Microscope (SEM), Transmission Microscopy (STEM), (TEM), Energy Dispersive Spectrometer (EDS) were used analyze structural evolution performance of LTO before after experiments. By comparing traditional electrode, behavior different electrodes studied. The results show that spraying can prepare an coating about 8 µm. After 200 cycles, structure evolved, inside fractured cracks expanded, because recrystallization at between rich fluorine compounds electrode. Similarly, has undergone test cycles. cycle stability, capacity retention rate, coulomb efficiency, internal impedance are than This innovative facile strategy aimed promote intrinsic safety working battery, shedding light on development next-generation high-performance solid-state batteries.