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China, Chinese Battery Internal Resistance Tester Machine for Cell Slurry Resistivity Testing2 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Analysis InstrumentOther Analysis InstrumentsResistivity TesterBattery Tester
XIAMEN TOB NEW ENERGY TECHNOLOGY CO., LTD.
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Product Description Battery Internal Resistance Tester Machine For Cell Slurry Resistivity Testing SPECIFICATIONS PARAMETERSResistivity measurement range2.5Ω*cm-50Ω*cmResistivity measurement resolution0.01μs/cmResistivity measurement accuracy±0.5% INSTALLATION REQUIREMENTVoltage220-240VVoltage variation tolerance±Power<80WEnvironmental temperature0-40oCEnvironmental humidity<80%RHNet wet5kgDimension(W*D*H)W*D*H:210mm*300mm*120mmThe Significance of Slurry ResistivityThe slurry is an important intermediate product in the production of lithium-ion batteries. The uniformity and stability of the slurry greatly affect the consistency and electrochemical performance of the final battery cell. The current method of monitoring slurry only has viscosity parameters, which cannot accurately evalu- ate the uniformity and stability of its electrical proper- ties. However, the slurry conductivity parameters and slurry formulation, conductive agent type and content,binder type andcontent etc, which all have significant correlation to monitor the production of slurry, and the slurry may have gel sedimentation after dwelling for a period of time after mixing. At this time, the conductivity value will also show varying degrees of change. Therefore, the conductivity of the slurry can be used as a method to characterize the uniformity and stability of the electrical properties of the slurry.Monitoring the conductivity of the slurry, on the one hand, it can evaluate the influence of different active materials, conductive agents, binders, solid content, etc. on the electrochemical perfor- mance, for material evaluation and screening, on the other hand, it can also be used for process stability monitoring, which can quickly identify abnormalities in the mixing process, and avoid the waste of time and cost caused by defective products flowing into the subsequent process.Slurry Resistivity Test PrincipleTest steps: Putting a certain volume of slurry (~80mL) into the measuring glass, inserting a clean electrode pen, start the software, start to test the changes in the slurry resistivity at the three pairs of electrodes over time and save it in the file.Test parameters: Resistivity, Temperature, TimeCalculation formula: Resistivity (Ω*cm):ρe=U/I*S/lCharacter:1. Separate the voltage and current lines, eliminate the influence of inductance on voltage measurement, and improve the accuracy of resistivity detection;2. The disk electrode with a diameter of 10mm ensures a relatively large contact area with the sample and reduces the test error;3. Real-time monitoring of changes in resistivity of the slurry at three positions in the vertical direction over time; Resistivity measurement range2.5Ω*cm-50mΩ*cmResistivity measurement accuracy±0.5% Slurry Resistivity Analyzer MSATest program: Three operator, Three times Testing of each operaterTest method: Deionized water was sonicated for 30 seconds, cleaned with deionized water,dried with dust-free paper, 5 sets of data were tested, and the fifth set of data was taken for GRR analysis.Application Cases1.Evaluations of different viscosity in slurry resistivity Lower viscosity2.Evaluations of different dilution multiples in slurry resistivity3.Evaluations of different dispersant in slurry resistivity4.Gel sedimentation evaluations:Comparing different types of conductive agentAfter slurry-A was allowed to stand, in the morning test on the third day, the resistivity of the lower channel electrode had been significantly lower than that of the middle channel and the upper channel, indicating that the slurry had settled, and most of the particles settled to the bottom of the cup. The electrical conductivity becomes better and the resistivity decreases;After three days of standing for slurry B, the resistivity hardly changed, indicating that there was no obvious settlement;A standing period can be set for the slurry resistivity of a certain fixed type of conductive agent to ensure the uniformity of the slurry!
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