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A facile in situ approach to ion gel based polymer electrolytes for flexible lithium batteries

机译：柔性锂电池离子凝胶基聚合物电解质的一种容易的方法

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摘要

Inherent safety and stability issues arising from the use of traditional organic liquid electrolytes in lithium-based batteries are currently limiting their application to flexible electronics and large-scale energy storage from renewable sources. Gel polymer electrolytes (GPE) with chemical cross-linked structures and green ionic liquids as plasticizers represent a solution to this problem. In this study, a novel type of GPE with an interpenetrating polymer network (IPN-GPE) is prepared by a simple in situ thermally induced free radical polymerization. The as-prepared IPN-GPE with cross-linked structure displays a combination of high flexibility and deformability as well as thermal stability (over 310 degrees C). Moreover, IPN-GPE possesses a superior electrochemical stability window (5 V vs. Li+/Li) as well as a considerable ionic conductivity of 1.3 x 10(-3) S cm(-1) at 30 degrees C. Therefore, with such an IPN-GPE gel electrolyte membrane, Li/IPN-GPE/LiFePO4 devices deliver superior stable charge/discharge profiles and remarkable cycling performance and rate capability. This simple, effective and low-cost in situ synthesis strategy makes IPN-GPE one of the most promising polymer electrolyte candidates for next generation rechargeable lithium-based batteries with highly elevated electrochemical performance and safety.
机译：使用传统有机液体电解质在锂基电池中产生的固有的安全性和稳定性问题目前将其应用于柔性电子产品和从可再生来源的大规模储能。凝胶聚合物电解质（GPE）与化学交联结构和绿色离子液体作为增塑剂代表该问题的溶液。在该研究中，通过简单的原位热诱导的自由基聚合制备具有互穿聚合物网络（IPN-GPE）的新型GPE类型。具有交联结构的AS制备的IPN-GPE显示出高柔韧性和可变形性以及热稳定性的组合（超过310℃）。此外，IPN-GPE具有优异的电化学稳定性窗口（5V与Li + / Li），以及在30摄氏度下为1.3×10（-3）厘米（-1）的相当大的离子电导率。因此，具有这样的IPN-GPE凝胶电解质膜，LI / IPN-GPE / LifePO4器件可提供卓越的稳定充电/放电型材和显着的循环性能和速率能力。这种简单，有效和低成本的原位合成策略使IPN-GPE成为下一代可充电锂基电池的最有前途的聚合物电解质候选者之一，具有高度升高的电化学性能和安全性。

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  • 来源
    《RSC Advances》 |2017年第86期|共8页
  • 作者

    Huang Bingyu; Zhang Youdi; Que Mingming; Xiao Yingbo; Jiang Yaoquan; Yuan Kai; Chen Yiwang;

  • 作者单位

    Nanchang Univ Coll Chem 999 Xuefu Ave Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem 999 Xuefu Ave Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem 999 Xuefu Ave Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem 999 Xuefu Ave Nanchang 330031 Jiangxi Peoples R China;

    Jiangxi Ganfeng Lithium Co Ltd 608 Nanyuan Rd Xinyu 338015 Peoples R China;

    Nanchang Univ Coll Chem 999 Xuefu Ave Nanchang 330031 Jiangxi Peoples R China;

    Nanchang Univ Coll Chem 999 Xuefu Ave Nanchang 330031 Jiangxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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