Method for preparing oxide solid electrolyte powder

The invention relates to the technical field of new energy batteries, in particular to a method for preparing oxide solid electrolyte powder. The oxide solid electrolyte powder is synthesized through a high-temperature and mechanical ball milling dual-energy driving method one-step process, mechanical energy provided by mechanical ball milling is matched with external temperature heating energy to provide driving energy for electrolyte synthesis reaction, meanwhile, efficient cooling and collection of products are achieved in the same equipment, efficient cooling to the room temperature can be achieved in the equipment, and the production efficiency is improved. And the electrolyte powder with uniform components and particle sizes and high surface activity can be obtained. The whole technological process is simple, the reaction temperature is effectively reduced, multiple tedious procedures of mixing, grinding, sintering, cooling and the like are completed through a single equipment procedure one-step method,