Method for determining moisture test temperature of sodium ion battery pole piece

Abstract

The invention discloses a method for determining the moisture testing temperature of a sodium ion battery pole piece, and belongs to the technical field of sodium ion battery testing. The method adopts a Karl-Fischer moisture meter, and comprises the following steps: when the Karl-Fischer moisture meter is in a balanced state or a stable state, setting an instrument gas source; setting the sample introduction delay time of the moisture tester, setting the heating temperature of the moisture tester according to the gradient, and waiting until the temperature rises to the set temperature and is stable; preparing a sample to be detected, weighing the sample, and inputting the weight of the sample into the moisture meter; placing the sample in a heating bin, and detecting at a gradient heating temperature; after sample moisture extraction is finished, the moisture meter displays the moisture value of the sample in real time to obtain the moisture content of the pole piece. The optimum temperature for testing the water content of the sodium-ion battery pole piece is determined by searching the inflection point temperature, and the result shows that the accuracy of the water content testing result of the sodium-ion battery pole piece is the highest at 180 DEG C.

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