Method for improving stability of composite solid electrolyte

• Main Authors: CAI BIYA, YE MAO, WANG QIANG
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a method for improving the stability of a composite solid electrolyte. The method comprises the following specific steps of drying a polymer solid electrolyte, an inorganic solid electrolyte and carbon black at a moderate temperature, performing heat treatment on an inorganic mineral material for 12-24h at 200-400 DEG C, mixing the raw materials according to a specific massratio, performing uniform dispersion for 2-4h in a ball mill, and preparing a milled sample by a blending hot press method at 100-140 DEG C into a composite solid electrolyte film with the thicknessabout 1 micrometer. According to the method, inorganic mineral serves as a filler, so that the performance of the solid electrolyte is improved; the inorganic mineral serves as a dispersing agent, sothat inorganic solid electrolyte grains are uniformly dispersed in the polymer solid electrolyte; the problem of aggregation of the inorganic solid electrolyte grains is solved; the index performanceof the composite solid elect