Amorphous-crystal multiphase solid electrolyte and preparation method thereof

The preparation method comprises the following steps: weighing a precursor and a lithium source, putting the precursor and the lithium source into a hydrothermal kettle together, heating and reacting for a period of time, washing and drying, and annealing in a specific temperature range of 400-550 DEG C to obtain the amorphous-crystal multiphase lithium ion solid electrolyte. According to the invention, the isotropy and excellent mechanical property of the amorphous body are combined with the crystal with good ionic conductivity and stability, so that the interface problem between the electrode material and the solid electrolyte in the all-solid-state battery is solved. 本发明公开了一种非晶-晶体复相的固态电解质及制备方法，称取前驱体与锂源共同装入至水热釜中，加热反应一段时间后洗涤烘干，然后在特定温度范围400℃-550℃内退火后得到非晶-晶体复相的锂离子固态电解质。本发明采用非晶体的各向同性和优异的机械性能，与具有良好离子电导率和稳定性的晶体相结合在一起，解决全固态电池中电极材料与固态电解质之间的界面问题。