Testing Methods and Standards for Lithium Battery Anode Materials

1.Test method for anode graphite moisture

(1) The weight loss of the sample after baked is the weight of the lost moisture, and the ratio of the reduced weight to the weight of the sample is the weight of the water content of the sample.

(2) Instruments and Reagents:Moisture meter(TOB-AKF-CH6), medicine spoon

Sample

Graphite Powder

Instruments and accessories

AKF-CH6 Karl Fischer moisture tester

10 ml sample feeding bottle

High purity nitrogen 99.99%

Electronic balance 0.1 mg

Reagent

Coulomb method Karl Fischer reagent, made in China

Instruction parameter

Ventilation flow:30ml/min

Heating temperature: 180℃

Electrolytic speed: automatic

Mixing speed: 6

Blank deduction: calculation

Measure method

(1) Turn on the TOB-AKF-CH6 moisture tester and add an appropriate amount of Karl Fischer reagent to the titration tank to ensure that the reagent is between the maximum and minimum scale.

(2) Turn on the nitrogen cylinder ,set gas flow ,temperature

(3 ) Wait for blank electrolysis balance test of the instrument.

(4) For sample testing, take appropriate amount of sample into the sample bottle, place it on the heating tank, connect the heating tracing tube, click start measurement, then sample, input relevant parameters, and wait for the measurement results

2. Test method foranodegraphite tap density

(1)Vibrate the graphite contained in the steel cylinder in the tap density tester for 10 minutes, calculate the volume after vibration through its descending depth, and then divide the weight of graphite by the volume after vibration to obtain the tap density.

(2)Instruments: powder tap density meter, steel cylinder (with steel cap), medicine spoon, depth vernier caliper, flattener powder tap density meter: You can use  TOB-TDT-JZ-7 Powder Tap Density Tester

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