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Silicon-containing lithium lanthanum titanate composite solid electrolyte material and method for producing the same

机译:含硅钛酸锂镧复合固体电解质材料及其制备方法

摘要

The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material. Thus, it is possible to synthesize the lithium lanthanum titanate composite solid electrolyte material containing silicon by performing sintering when the ratio of mass of the Si or mass of the Si calculated based on mass of the Si compound to mass of the lithium lanthanum titanate is 0.27% to 1.35%.
机译:包含硅的钛酸锂镧系复合固体电解质材料及其制造方法技术领域本发明涉及一种在晶粒之间的晶界中存在非晶硅或非晶硅化合物的含硅的钛酸锂复合固体电解质材料及其制造方法,属于锂离子电池领域。根据本发明,非晶态Si或非晶态Si化合物存在于钛酸锂镧的晶粒之间的晶界中。通过采用湿化学方法将非晶Si或非晶Si化合物引入晶界。在湿化学法中,使用廉价的有机硅化合物作为添加剂,并将该有机硅化合物添加到钛酸锂镧系固体电解质材料中。因此,当Si的质量或基于Si化合物的质量计算的Si的质量或Si的质量相对于钛酸锂镧的质量的比为0.27时,可以通过烧结来合成含硅的钛酸锂镧复合固体电解质材料。 %至1.35%。

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