Method for detecting constant gram volume of carbon fluoride material
A detection method and gram-capacity technology, applied in the direction of material electrochemical variables, color/spectral characteristics measurement, etc., can solve the problems of failure to meet conventional tests, difficulty in fluorination test, expensive equipment, etc., easy to master and cheap instruments The effect of easy operation and process
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Embodiment 1
[0024] After the above four samples were sieved with a 600-mesh sieve, the samples were prepared in a pressing box, and the whiteness of the samples was tested with a powder colorimeter.
[0025] The test results are shown in Table 1 and figure 1 shown:
[0026] Table 1 Relationship between whiteness value and gram capacity of carbon fluoride samples
[0027] sample Whiteness value Gram capacity mAh / g A 6.9 775 B 8.8 792 C 11.5 821 D 19.8 869
Embodiment 2
[0029] After the above four samples were sieved with a 1000-mesh sieve, the samples were prepared in a pressing box, and the whiteness of the samples was tested with a powder colorimeter.
[0030] The test results are shown in Table 2 and figure 2 shown:
[0031] Table 2 Relationship between whiteness value and gram capacity of carbon fluoride samples
[0032] sample Whiteness value Gram capacity mAh / g A 6.7 775 B 8.9 792 C 11.4 821 D 19.9 869
[0033] It can be seen from the results of Example 1 above that there is a good linear relationship between the gram capacity of the carbon fluoride material and the whiteness value. The greater the whiteness value of the material, the greater the gram capacity of the material. This is because the gram capacity of fluorocarbon materials depends on the degree of fluorination of the material, and the color of the material is also related to the degree of fluorination. The higher the degree of f...
Embodiment 3
[0035] Take a sample to be tested, sieve it with a 600-mesh sieve, make a sample from the sieved powder in a sample pressing box, and test the whiteness of the sample with a powder colorimeter. According to the linear curve calculation, its specific capacity at a current density of 10 mA / g is 790 mAh / g.
[0036] The sieved powder sample was made into a button battery, and the specific capacity at a current density of 10 mA / g was 784 mAh / g, and the deviation from the specific capacity calculated by the whiteness value was 6 mAh / g.
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