The conductivity of lithium battery coating slurry is an important quality index, which is directly related to the performance and life of lithium battery. A common method is to use a conductivity meter for measurement.

Procedure of operation
The specific operation steps are as follows:

Prepare the sample of the coating slurry to be tested and put it into the test cell of the conductivity meter.

Calibrate and calibrate the instrument according to the instructions of the conductivity meter to ensure the accuracy of the test results.

Insert the test electrode of the conductivity meter into the sample of the coated slurry in the test cell, and keep the electrode still until the measurement of the conductivity meter is stable.

How to detect the conductivity of lithium battery coating slurry?

The test results of the conductivity meter were recorded, and the data were analyzed and evaluated. According to the test results, evaluate the conductivity index of the coated slurry, and carry out quality control and quality inspection.

North and south tide prompt you: when using conductivity meter to measure the conductivity of carbon paste, it is necessary to avoid the interference of air bubbles and impurities in the sample of carbon paste to the test results. In addition, according to the actual needs, other methods can also be used to test and evaluate the conductivity of the lithium battery coating slurry, such as the use of impedance analyzer and other test equipment for measurement.

In addition to the conductivity meter, there are some other methods to measure the conductivity of the lithium battery coating slurry. Here are some common methods:

How to detect the conductivity of lithium battery coating slurry?

Electrochemical impedance spectroscopy: By applying AC voltage to the electrode of lithium battery, the electrochemical impedance of the electrode surface reaction is measured, and the electrical conductivity of the coating slurry is evaluated according to the shape and characteristics of the impedance spectrum.

Four probe method: Four probes are used to measure the resistivity of the sample of the carbon coated slurry, so as to calculate the conductivity of the carbon coated slurry. This method can avoid the interference of air bubbles and impurities in the sample of coated slurry on the test results.

Dc resistance method: by applying DC voltage in the sample of carbon coating slurry, and measuring the parameters such as current and voltage in the sample, the resistivity and conductivity of carbon coating slurry can be calculated.

How to detect the conductivity of lithium battery coating slurry?

We remind you that different test methods may have a certain impact on the test results, so when selecting test methods, the appropriate method should be determined according to the actual needs and application environment. At the same time, in order to ensure the accuracy of the test results, it is also necessary to prepare, process and calibrate the samples according to the requirements of the test method.