Abstract
The interfacial contact between solid electrolyte and cathode materials is one of the challenges for solid state battery (SSB) industry. The co-sintering of solid electrolyte and cathode materials could be a possible solution. Considering the future scope of solid state battery fabrication by cosintering process of phosphate based solid electrolyte and phosphate based cathodes (LiFePO4, Li3V2(PO4)3 etc.), present study focuses on stabilizing the NASICON structured Li1.4Al0.4Ti1.6(PO4)3 (LATP) solid electrolyte in inert atmosphere because proposed cathode materials are not stable in air at high temperature. The results show high influence of particle size and heating rate along with sintering temperature on achieving pure phase and fully dense pellets in argon atmosphere. The cracks/voids, secondary phases and reduction of Ti were observed in the