Sulfide solid electrolyte of three-layer core-shell structure, preparation method thereof and all-solid-state battery

technical field [0001] The invention relates to the field of all-solid-state batteries, in particular to a three-layer core-shell structure sulfide solid electrolyte, a preparation method thereof, and an all-solid-state battery. Background technique [0002] In the 1990s, Japan's Sony Corporation first successfully launched commercial lithium-ion batteries. Lithium-ion batteries have the advantages of high power density, high voltage, environmental friendliness, and small self-discharge, and are widely used in portable electronic devices such as mobile phones and notebook computers and electric vehicles. After years of development, the industry has formed a complete industrial chain with a high degree of professional segmentation. The application field of lithium-ion batteries has also developed from the initial small digital electronic products to large-scale energy storage products such as electric vehicles and energy storage power stations. According to the data, the to...