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Updated: Sep 25, 2025
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
The synergistic effect of the PEO-PVA-PESf composite polymer electrolyte for all-solid-state lithium-ion batteries
Ling Xu1, Kaiyuan Wei1, Yong Cao1
1Institute of Electronic Engineering, China Academy of Engineering Physics Mianyang Sichuan 621000 P. R. China cuiyanhua@netease.com yzhao@caep.cn.
Abstract:
Blending with poly(vinyl alcohol) (PVA) and poly(oxyphenylene sulfone) (PESf) has been investigated to improve the properties of a polymer electrolyte based on a poly(ethylene oxide) (PEO) matrix. The composite electrolyte shows a high ionic conductivity of 0.83 × 10-3 S cm-1 at 60 °C due to the significant inhibition of crystallization caused by the synergistic effects of PVA and PESf. The symmetrical cell Li/CPE/Li is continuously operated for at least 200 hours at a current density of 0.1 mA cm-2 without the enhancement in the polarization potential. In addition, the all-solid-state LiFePO4/CPE/Li cells exhibit small hysteresis potential (about 0.10 V), good cycle stability and excellent reversible capacity (126 mA h g-1 after 100 cycles).
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