Method for modifying sodium super-ionic conductor type solid electrolyte by plasma

Abstract

The invention discloses a method for modifying a sodium super-ionic conductor type solid electrolyte by plasma, which comprises the following steps: performing plasma modification treatment on sodium super-ionic conductor type solid electrolyte particles to obtain activated sodium super-ionic conductor type solid electrolyte particles; weighing a polymer and the activated sodium super-ionic conductor type solid electrolyte particles according to a preset proportion, dissolving the polymer and the activated sodium super-ionic conductor type solid electrolyte particles in an organic solvent to obtain a mixed solution, and then pouring the mixed solution into a preset mold, and drying to remove the organic solvent, forming a composite solid electrolyte membrane, taking out the composite solid electrolyte membrane from the preset mold, and rolling to obtain the composite solid electrolyte membrane after rolling treatment. The method is short in production period and low in cost, large-scale commercialization can be achieved, and application of the solid electrolyte in commercialization is further achieved.

Description

technical field [0001] The invention relates to the field of new energy materials, in particular to a method for plasma modification of a sodium superionic conductor solid state electrolyte. Background technique [0002] Driven by the national strategic goal of "dual carbon", it has become an inevitable trend to accelerate the optimization of energy structure and build a new power system with new energy as the main body. The development of new energy materials and energy storage devices is of great significance to promote green energy transformation, cope with extreme events, ensure energy security, promote high-quality energy development, and achieve the goal of "double carbon". [0003] Solid-state sodium-ion batteries are called "green energy for the 21st century". Compared with traditional lithium batteries, solid-state sodium-ion batteries have the advantages of abundant raw material reserves, low production costs, high safety performance, wide operating temperature ran...

AI Technical Summary

Problems solved by technology

However, problems such as low room temperature ionic conductivity, poor film-forming mechanical properties, high porosity, narrow electrochemical window, and poor interfacial compatibility with electrodes limit their application in solid-state sodium-ion batteries.

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