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A Novel Solid Nanocomposite Electrolyte for High Performance Batteries

机译:一种用于高性能电池的新型固体纳米复合电解质

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摘要

We present a set of novel solid nanocomposite electrolytes (SCEs) based on a mesoporous silicon oxide structure functionalized with an ionic-liquid electrolyte (ILE). So far, all prior reports on porous oxide composites with ILE, also referred to as ionogels, show Li-ion conductivities far below that of the pure ILE liquid. We could now synthesize SCE pellets with a conductivity that does exceed the conductivity of the pure ILE liquid by up to 100%. Conductivity of best samples amply surpass the room temperature threshold of 1 mS/cm needed for high capacity solid-state Li-ion batteries. A mechanism for the enhanced ion conduction through a surface adsorbed mesophase layer is proposed. In addition, functional solid-state batteries of Li/SCE/LiFePO[4] and Li[4]Ti[5]0[12]/SCE/LiFePO[4] are demonstrated, showing a stable electrochemical cell performance. We believe this achievement to be a candidate for a major breakthrough in solid electrolytes. This set of SCE materials give relevant high ion conductivities enabling all-solid-sate cells with a large capacity operating at room temperature. In addition, and in contrast to the inorganic powder electrolytes, cells can now be made using conventional wet chemical processing as the solid electrolyte is applied from a liquid precursor solution and in-situ solidified inside the electrodes.
机译:我们介绍了一套新型的固体纳米复合电解质(SCEs),其基于以离子液体电解质(ILE)功能化的中孔氧化硅结构。到目前为止,所有先前关于带ILE的多孔氧化物复合材料(也称为离子凝胶)的报道均显示锂离子电导率远低于纯ILE液体。现在,我们可以合成出SCE颗粒,其电导率比纯ILE液体的电导率高出100%。最佳样品的电导率足以超过高容量固态锂离子电池所需的室温阈值1 mS / cm。提出了通过表面吸附中间相层增强离子传导的机理。此外,Li / SCE / LiFePO [4]和Li [4] Ti [5] 0 [12] / SCE / LiFePO [4]的功能性固态电池得到了证明,显示出稳定的电化学电池性能。我们相信这一成就将成为固体电解质重大突破的候选者。这套SCE材料可提供相关的高离子电导率,从而使全固态电池在室温下具有大容量运行。另外,与无机粉末电解质相反,现在可以使用常规的湿化学处理来制造电池,因为从液体前体溶液施加固体电解质并在电极内部原位固化。

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  • 会议地点 Mainz(DE)
  • 作者单位

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Imec, Kapeldreef 75, Leuven, B-3001 Belgium;

    Panasonic Corporation, Advanced Research Division, 1006, Kadoma, Kadoma City, Osaka, 571-8501 Japan;

    Panasonic Corporation, Advanced Research Division, 1006, Kadoma, Kadoma City, Osaka, 571-8501 Japan;

    Panasonic Corporation, Advanced Research Division, 1006, Kadoma, Kadoma City, Osaka, 571-8501 Japan;

    Panasonic Corporation, Advanced Research Division, 1006, Kadoma, Kadoma City, Osaka, 571-8501 Japan;

    Panasonic Corporation, Advanced Research Division, 1006, Kadoma, Kadoma City, Osaka, 571-8501 Japan;

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