Open AccessInvestigation of structure and ionic conductivity of (PEO)12-SiO2-LiClO4 nanocomposite electrolyte for all solid-state lithium-ion battery
Author(s) -
Y Z Li,
Yanping Yang,
Ruyan Lei,
Sijie Fu,
Ruiying Wan,
J Li
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1765/1/012016
Subject(s) - materials science , ionic conductivity , nanocomposite , thermogravimetric analysis , electrolyte , crystallinity , lithium (medication) , chemical engineering , conductivity , fast ion conductor , lithium perchlorate , amorphous solid , thermal stability , lithium ion battery , lithium battery , ionic bonding , analytical chemistry (journal) , ion , battery (electricity) , composite material , chemistry , organic chemistry , medicine , power (physics) , physics , electrode , quantum mechanics , engineering , endocrinology
Solid polymer electrolytes (SPEs), based on poly ethylene oxide (PEO) matrix and nano-sized SiO 2 , are prepared by solution-casting method. The morphology, crystallinity, thermostability and ionic conductivity of nanocomposite polymer electrolyte are systematically investigated by field-emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), thermogravimetric analysis, and AC impedance spectroscopy. The result reveals that SiO 2 is uniformly dispersed in the SPE. Furthermore, the incorporation of nano-sized SiO 2 can restrict the crystalline behaviour of PEO effectively, leading to the improvement in amorphous state of PEO. With increasing the mass loading of SiO 2 , the ionic conductivity of SPEs increase to a maximum value, about 3.03 × 10 −4 S·cm −1 ( χ ( SiO 2 / PEO ) = 6.85%), and then fall down. Meanwhile, the initial decomposition of SPE reaches 335 °C, showing the good thermal stability and potential application of SPEs for the next-generation all solid-state lithium-ion battery (LIB) with enhanced safety.