Open AccessElectrospun poly(ethylene oxide) nanofibrous composites with enhanced ionic conductivity as flexible solid polymer electrolytes
Author(s) -
Zha JunWei,
Huang Na,
He KangQiang,
Dang ZhiMin,
Shi ChangYong,
Li Robert KwokYiu
Publication year - 2017
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve.2016.0069
Subject(s) - ionic conductivity , materials science , ethylene oxide , electrospinning , electrolyte , crystallinity , chemical engineering , polymer , conductivity , ultimate tensile strength , lithium (medication) , oxide , lithium perchlorate , composite material , chemistry , electrode , copolymer , metallurgy , medicine , engineering , endocrinology
Solid polymer electrolytes (SPEs) have great potential to address the safety issues of lithium (Li)‐ion batteries when compared with conventional liquid electrolytes, which makes them a promising alternative for next‐generation high‐energy batteries. In this work, poly(ethylene oxide)‐lithium perchlorate (PEO–LiClO 4 ) polymer electrolytes for Li‐ion batteries were prepared using electrospinning. The crystallinity, ionic conductivity as well as mechanical properties were investigated. Ionic conductivities and mechanical properties of PEO–LiClO 4 based SPE have been obviously increased by incorporating modified TiO 2 nanofibres (TNFs) than TiO 2 nanoparticles (TNPs), due to that both TNFs and TNPs can decrease the crystalline phase concentration of PEO and increase segmental flexibility of PEO. The SPE with 3 wt% TNFs exhibits the highest conductivity of 5.308 × 10 −5 S cm −1 at 20°C and higher tensile strength of 13.8 MPa. These results highlight the potential of utilising the electrospinning method to improve the ionic conductivity of SPEs.