Effect of filler-polymer interactions on the crystalline morphology of PEO-based solid polymer electrolytes by Y2O3 nano-fillers
✍ Scribed by Guijie Liang; Jie Xu; Weilin Xu; Xiaolin Shen; Hui Zhang; Mu Yao
- Publisher
- Society for Plastic Engineers
- Year
- 2011
- Tongue
- English
- Weight
- 590 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0272-8397
- DOI
- 10.1002/pc.21058
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✦ Synopsis
Abstract
A novel lithium solid polymer electrolyte (SPE) based on polyethylene oxide (PEO) matrix and yttrium oxide (Y~2~O~3~) as nano‐filler was prepared by solution casting technique. The Lewis acid‐based filler‐polymer coordination interactions between the surface of Y~2~O~3~ and the ether oxygen of PEO were proved by FTIR, which induced an obvious modification of crystalline morphology of the PEO‐based SPEs. Polarized optical microscope (POM) analysis shows that the induced nucleation and steric hindrance effects of Y~2~O~3~ nano‐filler result in the increased amount as well as decreased size of spherulites in the PEO matrix, respectively. Atomic force microscope (AFM) images indicate the surface morphology of PEO gets rougher as Y~2~O~3~ content increases. X‐ray diffractomer (XRD) and differential scanning calorimetry (DSC) results demonstrate the crystallinity of SPEs decreases from 51.1% to 32.5% with the Y~2~O~3~ weight ratio [m(Y~2~O~3~)/m(PEO+LiI)] increasing from 0 to 0.15. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers