Application of sulfide electrolyte in preparing all-solid-state battery

Abstract

The invention relates to an application of a sulfide electrolyte in preparing an all-solid-state battery. The application specifically comprise the steps of mixing a raw material comprising the sulfide electrolyte and a binder to obtain mixed dry powder; fully grinding the mixed dry powder into viscous powder, and compressing and shaping. According to the invention, the all-solid-state battery prepared from the sulfide electrolyte is further protected, wherein the all-solid-state battery comprises a positive electrode layer, an electrolyte layer, a negative electrode layer or / and a cell consisting of the positive electrode layer, the electrolyte layer and the negative electrode layer. According to the application method and the sulfide electrolyte based all-solid-state battery, the all-solid-state battery is free of any solvent, so that the condition that performance of the solid electrolyte is damaged due to a reaction between the solvent and the sulfide electrolyte is avoided; meanwhile, influences from toxic organic solvents, and troublesome processes for removing and recycling the toxic organic solvents are avoided; and in addition, the application is simple in operation method and easy to implement.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a construction method of an all-solid positive electrode layer, an electrolyte layer and a negative electrode layer, and an all-solid-state battery. Background technique [0002] In recent years, with the popularization of portable electronic devices (such as smart phones, personal computers, and cameras, etc.), especially low-pollution, non-polluting electric vehicles and hybrid vehicles have been included in the national strategic plan, lithium-ion batteries as their core components Batteries have become the top priority in research and development. However, most of the currently commercially available secondary lithium batteries use organic electrolytes as electrolytes, which have the disadvantages of being toxic, flammable, low in decomposition potential, and poor in safety. To prevent battery short circuit and improve the structural design. Although various prote...

AI Technical Summary

Problems solved by technology

Therefore, there are very few solvent-binder systems suitable for sulfur-based electrolytes, and the traditional wet coating process for preparing lithium batteries is difficult to apply to the production process of all-solid-state batteries based on sulfur-based electrolytes.

In addition, problems such as toxicity, removal and recovery brought about by the use of organic solvents also put forward higher requirements on production conditions