Method for testing stability of solid electrolyte

The invention provides a method for testing the stability of a solid electrolyte, which comprises the following steps of: (1) putting a solid electrolyte sample to be tested into a sample chamber, continuously vacuumizing the sample chamber, and monitoring the vacuum degree of the sample chamber by adopting a vacuum gauge; (2) introducing gas to be inspected into the sample chamber through a gas source, and adjusting the flow of the gas according to the change of the vacuum degree so as to control the concentration of the gas in the sample chamber; and (3) closing the vacuum after the gas concentration in the sample chamber is stable, and then taking out the solid electrolyte sample for testing after the treatment time is ended. The invention provides a pretreatment means for the solid electrolyte material in a low-concentration gas atmosphere, and can realize the stability test in various atmospheres under low partial pressure conditions. By combining macroscopic and microcosmic characterization analysis, a