Preparation of LMTO Solid Electrolyte Materials by Ultrasonic-microwave Assisted Self-combustion Method
In this paper,Ti4+-doped La2Mo2O9 solid electrolyte La2Mo2-xTixO9-δ(LMTO)materials were successfully pre-pared by ultrasonic-microwave assisted self combustion method.LMTO was sintered at 850 ℃ for 2 hours in an air atmosphere to obtain ceramic materials.The surface microstructure and electrochemical properties of the samples were detected and ana-lyzed by XRD,relative density,SEM,and EIS characterization.The experimental results show that the sintering activity is very good,the grain size is uniform,and the grain radius is about 25 nm,and the relative density is more than 95％;Ti4+do-ping significantly improves the ionic conductivity of LMTO.At 800 ℃,the maximum conductivity is 0.0253 S/cm,and the activation energy is as low as 1.312 eV,which is expected to be applied to solid-oxide fuel cell electrolyte materials.
solid fuel cells electrolytelanthanum molybdateultrasonic-microwave assistednew oxygen ion conductoractivation energy
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