Interface Modification of NASICON-structured Li(1.5)A(10.5)Ge(1.5)(PO4)(3) (LAGP) by Femtosecond Laser Structuring and Ionic Liquid

NASICON-structured solid-state electrolyte, namely Li(1.5)A(10.5)Ge(1.5)(PO4)(3)(LAGP) possesses high ionic conductivity and good compatibility with lithium metal that make it an ideal electrolyte for next generation lithium battery. However, high interfacial impedance and possible dendrite limit its practical applications. To reduce interfacial impedance, herein, surface texturing on the LAGP is conducted using a femtosecond laser, and further wetted by ionic liquids. The femtosecond laser-modified surface can effectively increase wettability and improve the interfacial contacts. Low area specific impedance of 81.452 cm(-2) is obtained and the full battery demonstrates good electrochemical performances.