A Study on the Rheological and Electrochemical characteristics of Additives for Solid Polymer Electrolytes (SPEs) and Suspensions
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초록
내용
In this study, for fabricating the better performance of solid polymer electrolytes (SPEs), we used three types of salts, I.e., NaClO4, LiClO4, and LiBOB, and two additives, I.e., ionic liquid (ILs) and silica nanoparticles (SiNPs). ILs were added to enhance the electrochemical characteristics of SPEs by improving the mobility of polymer chains and acting as free charge carriers. SiNPs reduce polymer crystallinity without deterioration of mechanical property. To study the effects of additives on PEO-based SPEs, we examined the rheological characteristics of SPE suspensions by small amplitude oscillatory shear (SAOS) test and time sweep test. The electrochemical property of SPE films were characterized by electrochemical impedance spectroscopy (EIS) measurement. Furthermore, we investigated the morphology of suspensions with cryogenic electron microscopy (cryo-EM) image analysis.