Novel Solid Polymer Electrolyte: PAN-Clay hybrid

摘要

During the past decade, lithium salt-based electrolytes have been the focus of numerous fundamental and application-oriented studies. Most Li~+-based polymeric electrolytes have one drawback, which is low ionic conductivity at ambient temperature. One approach to produce electrolytes that possess high conductivity and maintain sufficient performance is to prepare a polymer electrolyte nanocomposite. Due to their small particle size and intercalation property, forming an intercalating polymer in layered inorganic hosts is the most promising way. An increase in ionic conductivity that was observed within the composite system will be discussed regarding the formation of contact-ion pairs and higher ionic aggregates. As well, via IR spectra of CN~- and CF_3~- vibrations, the cause of conductivity variation will be investigated. These vibrations are employed to interpret the formation of PAN-LiCF_3SO_3 complex and ionic aggregates. The purpose of this work is to emphasize the extraordinary effect produced when clay is added to the PAN/Li~+/clay blend system.