Manufacturing method of salt bridge used in low temperature environment

Abstract

The invention discloses a manufacturing method of a salt bridge used in low temperature environment. The mixture in the salt bridge is composed of the following components: a saturated potassium nitrate solution, soluble starch, and diluted sulfuric acid with a density of 1.2 to 1.35 g / cm3 according to a weight ratio of 5-11:4-10:1-5. The salt bridge is made of plastic soft pipe. The manufacture of the salt bridge is simple, the raw material consumption is little, the length of the salt bridge can be adjusted at will, and the soluble starch has good solubility. The salt bridge has the advantages of stable chemical property, strong absorbing force, good fluidity, and proper gelation speed, and can be used in low temperature environment with a temperature of -20 to 0 DEG C, and the test results are precise and stable. Moreover the shortages of conventional salt bridges are overcome.

Description

technical field

[0001] The invention relates to the field of salt bridge manufacturing methods, in particular to a salt bridge manufacturing method used in a low-temperature environment. Background technique

[0002] For experimental batteries with poor low-temperature discharge capacity, in order to further analyze whether the cause of poor low-temperature performance is the problem of the positive plate or the negative plate, the reference electrode is often used to measure the potential of the positive and negative electrodes, and the relative value is used to determine whether the battery is charging or discharging. The quality status of positive and negative plates can be monitored to improve the analysis of battery capacity and the cause of failure. The current unipolar potential test method is to connect a container externally after punching a hole on the battery case wall, and then add the same electrolyte in the container as the inside of the battery to form a path,...

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