SEM-EDS combined test method for metal foreign matters in lithium battery material
A technology of SEM-EDS and metal foreign matter, which is applied in the field of SEM-EDS combined testing of metal foreign matter in lithium battery materials, can solve problems such as poor accuracy of test results, achieve long service life, ensure consistency, and ensure accuracy Effect
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[0036] Example 1,
[0037] A. Weigh 200g of cobalt hydroxide, the precursor of lithium battery cathode material, and place it in a 500mL plastic test bottle. Put in a clean magnet (magnetic field strength of 5500GS) that has passed the test and fill with high-purity water. After shaking it up and down 10 times, place the test bottle In the mixer, mix clockwise and counterclockwise for 15 minutes at the mixer speed of 120r / min, and then take it off;
[0038] B. After mixing, remove the test bottle, pour out the sample slurry in the test bottle, take out the magnet, rinse the adhered materials with high-purity water 4 times, then put the magnet into a 400mL beaker and add water to completely cover the magnet. Place the beaker in an ultrasonic instrument for ultrasonic washing for 30 seconds, then remove the magnet, wash with high-purity water 3 times, and then wash with absolute ethanol once, and dry naturally;
[0039] C. Cut the conductive tape to a size of 10mm×10mm and stick it to...
Example Embodiment
[0044] Example 2,
[0045] A. Weigh 200g of cobalt tetroxide, the precursor of the lithium battery cathode material, and place it in a 500mL plastic test bottle. Put in a clean magnet (with a magnetic field strength of 6000GS) that has passed the test and fill it with high-purity water. After shaking it up and down 10 times, place the test bottle in the mixture. In the homogenizer, mix clockwise and counterclockwise for 15 minutes at the mixer rotation speed of 120r / min, and then remove;
[0046] B. After mixing, remove the test bottle, pour out the sample slurry in the test bottle, take out the magnet, rinse the adhering materials with high-purity water 5 times, and then put the magnet into a 400mL beaker and add water to completely cover the magnet. Place the beaker in an ultrasonic instrument for ultrasonic washing for 30 seconds, then remove the magnet, wash with high-purity water 3 times, and then wash with absolute ethanol once, and dry naturally;
[0047] C. Cut the conductiv...
Example Embodiment
[0052] Example 3.
[0053] A. Weigh 200g of cobalt tetroxide, the precursor of the lithium battery cathode material, and place it in a 500mL plastic test bottle. Put in a clean magnet (magnetic field strength of 5000GS) that has passed the test and fill it with high-purity water. After shaking it up and down 10 times, place the test bottle in the mixture. In the homogenizer, mix clockwise and counterclockwise for 15 minutes at the mixer rotation speed of 120r / min, and then remove;
[0054] B. After mixing, remove the test bottle, pour out the sample slurry in the test bottle, take out the magnet, rinse the adhering materials with high-purity water 3 times, then put the magnet into a 400mL beaker and add water to completely cover the magnet. Place the beaker in an ultrasonic instrument for ultrasonic washing for 30 seconds, then remove the magnet, wash with high-purity water 3 times, and then wash with absolute ethanol once, and dry naturally;
[0055] C. Cut the conductive tape to a...
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