Study on the interface stability between LATP/SPE composite solid electrolytes with different ratios and lithium metal AITranslate

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Chinese Library Classification Number:TM912[电气工程—电力电子与电力传动];TB332[一般工业技术—材料科学与工程]

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In this study,composite solid-state electrolytes(CSEs)were fabricated by incorporating 20%,50%,and 80% of Li_1.3Al_0.3Ti_1.7(PO₄)₃solid electrolyte powder into a poly(ethylene oxide)(PEO)-based solid polymer electrolyte(SPE)matrix via a solution casting method.The microstructural characteristics,ionic conductivity,Young’s modulus,and interfacial electrochemical stability with lithium metal anodes of the LATP/SPE composite electrolytes were systematically investigated.Experimental results demonstrated that the CSE containing 50%LATP exhibited optimal electrochemical performance,achieving stable cycling for 1600 h at a current density of 0.5 mA/cm².This performance significantly surpassed that of composites with 0,20%,and 80%LATP additions.Furthermore,the interfacial failure mechanisms between lithium metal and CSEs with varying LATP contents were thoroughly elucidated.