Abstract
The ionic conductivity of polyethylene oxide (PEO)-based electrolytes has been known to be greatly enhanced by filling with nano ceramic particles, though it is strongly dependent on thermal treatment schedule and decreases slowly for long aging. The unstableness of the conductivity was attributed to the change of crystallization kinetics caused by some kind of interactions among polymer chains and incorporated ceramic particles. In this paper, ceramic-free PEO n LiClO 4 polymer electrolytes were studied by measuring ionic conductivity and optical micrographs. We show that the unstableness of the ionic conductivity is inherent in the semicrystalline state of ceramic-free PEO-salt electrolytes and the conductivity below melting temperature can be variant by almost two orders of magnitude according to thermal treatment and storage time, although it may be changed by introducing ceramic particles. The melting temperature T m increases with storage time due to the stiffening of spherulites, and the increment of T m is more pronounced for higher salt ratio. All these are primarily concerned with the two-phase nature and the slow re-crystallization kinetics of PEO.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
