A High-Performance Self-Reinforced PEO-Based Blend Solid Electrolyte Membrane for Solid-State Lithium Ion Batteries,Russian Journal of Electrochemistry

当前位置： X-MOL 学术 › Russ. J. Electrochem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A High-Performance Self-Reinforced PEO-Based Blend Solid Electrolyte Membrane for Solid-State Lithium Ion Batteries
Russian Journal of Electrochemistry ( IF 1.1 ) Pub Date : 2022-04-24 , DOI: 10.1134/s1023193522040085
Chengbin Li _{1,

2,

3,

4} , Hongyun Yue _{2,

5} , Shuting Yang _{2,

5} , Qiuxian Wang ₆

Affiliation

Abstract

The application of lithium-ion batteries is increasing, but the safety problems of traditional liquid lithium-ion batteries have not been fully resolved. Design and manufacture of solid electrolytes can thoroughly solve the problems. A self-reinforced poly(ethylene oxide) based blend solid electrolyte (PEO-BSPE) membrane was designed and prepared successfully by in-situ polymerization of ethoxylated trimethylolpropane triacrylate (ETPTA) in PEO electrolyte matrix under UV light to form a high-strength three-dimensional network structure. XRD and FESEM analyses proved that PEO-BSPE membranes were amorphous, smooth and flexible. The tensile strength of PEO-BSPE was 20 times higher than that of PEO-SPE film. PEO-BSPE also had good safety and low glass transition temperature. The ionic conductivity of PEO-BSPE at 55°C increased to 1.3 × 10^–4 S cm^–1. The electrochemical stability window of PEO-BSPE was 5.6 V. The solid-state battery was assembled with PEO-BSPE. The solid-state battery (LiFePO₄/PEO-BSPE/Li) had good cycle stability, low interface impedance (189 Ω cm^–2), high coulombic efficiency (>98%), high average specific discharge capacity (>135 mA h g^–1 at 0.1 C) and excellent C-rate performance at 55°C. Hence the PEO-BSPE membrane is a very hopeful candidate for applying in all-solid-state lithium battery.

中文翻译：

用于固态锂离子电池的高性能自增强 PEO 基混合固体电解质膜

摘要

锂离子电池的应用越来越多，但传统液态锂离子电池的安全问题并没有得到彻底解决。固体电解质的设计和制造可以彻底解决这些问题。以乙氧基化三羟甲基丙烷三丙烯酸酯（ETPTA）在PEO电解质基质中紫外光下原位聚合，成功设计制备了一种自增强聚环氧乙烷基共混固体电解质（PEO-BSPE）膜，形成高强度三维网络结构。XRD和FESEM分析证明PEO-BSPE膜是无定形的、光滑的和柔韧的。PEO-BSPE的拉伸强度是PEO-SPE薄膜的20倍。PEO-BSPE还具有良好的安全性和较低的玻璃化转变温度。PEO-BSPE 在 55°C 时的离子电导率增加到 1.3 × 10^–4厘米^–1。PEO-BSPE的电化学稳定性窗口为5.6 V。固态电池由PEO-BSPE组装而成。固态电池（LiFePO ₄ /PEO-BSPE/Li）具有良好的循环稳定性、低界面阻抗（189 Ω cm ^-2）、高库仑效率（>98%）、高平均比放电容量（>135 mA hg）^–1在 0.1 C) 和在 55°C 时出色的 C 率性能。因此，PEO-BSPE膜是应用在全固态锂电池中非常有希望的候选者。

更新日期：2022-04-25

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南