A kind of LiMn2O4/ doping NASICON/Li4Ti5O12All-solid film batteries and preparation method

A kind of LiMn 2 O 4 / doping NASICON/Li 4 Ti 5 O 12 All-solid film batteries and preparation method, it is characterised in that the voltage between substrate and spray gun, up to 40-80kV, drastically increases the close contact between positive electrode and collector and negative material and electrolyte, HVAF particle velocity is fast, and particle is in semi-molten state can form close contact with substrate, adopt electrostatic spray pyrolysis and HVAF to deposit the mode of both positive and negative polarity active material presoma and solid electrolyte simultaneously simultaneously, common contact interface is become whole contact layer, thus 2 contact interfaces of | solid electrolyte and negative material | solid electrolyte become not having obvious contact interface by positive electrode, greatly reduce positive and negative pole material | the interface impedance of solid electrolyte, and avoid electrolyte inconsistent with the synthesis temperature of positive and negative pole material and cause underburnt or burning, and the ionic conductivity of positive and negative pole material can be improved significantly, thus increasing substantially the comprehensive electrochemical of all-solid-state battery.