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A silica-based gel electrolyte system for improving the cycle performance of LiFePO4 batteries in an aqueous medium

机译:基于二氧化硅基凝胶电解质系统,用于改善水性介质中LiFepo4电池的循环性能

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摘要

LiFePO4 based aqueous lithium batteries using aqueous electrolytes suffer from poor cycling performance. This is mainly caused by the Fe dissolution and Li loss generated from the effects of water. In this paper, fumed silica based gel electrolytes were prepared and optimized for improving the cycling performance of the LiFePO4 electrodes owing to superior stability and comparable ionic conductivity. It was manifested that the Zn/LiFePO4 cells using this homogenous gel electrolyte showed stable charge/discharge voltage profiles and excellent cycling performance at room temperature. The dissolution of Fe and the loss of Li in this electrolyte is significantly suppressed. These superior performances could endow this gel electrolyte as a promising alternative to aqueous electrolyte systems in the LiFePO4 batteries at room temperatures.
机译:使用含水电解质的Lifepo4的锂电池患有较差的循环性能。 这主要是由水的溶解和锂损失引起的水。 在本文中,制备了气相二氧化硅基凝胶电解质并优化,以改善LiFePO4电极的循环性能,由于优异的稳定性和相当的离子电导率。 表现出使用这种均匀凝胶电解质的Zn / LifePO4细胞在室温下显示出稳定的充电/放电电压曲线和优异的循环性能。 该电解质中Fe的溶解和Li的损失被显着抑制。 这些优异的性能可以赋予凝胶电解质作为在室温下LiFePO4电池中的水性电解质系统的有希望的替代品。

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  • 来源
    《RSC Advances》 |2016年第3期|共7页
  • 作者单位

    Beijing Univ Chem Technol Coll Sci Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol Coll Sci Beijing 100029 Peoples R China;

    Res Inst Chem Def Beijing 100191 Peoples R China;

    Beijing Univ Chem Technol Coll Sci Beijing 100029 Peoples R China;

    Res Inst Chem Def Beijing 100191 Peoples R China;

    Res Inst Chem Def Beijing 100191 Peoples R China;

    Beijing Univ Chem Technol Coll Sci Beijing 100029 Peoples R China;

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

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