FT-551 series automatic lithium battery electrode conductivity tester
Onesummary:
Using a flat probe, apply a certain pressure to the tested sample to analyze the overall resistance of the electrode, automatically apply pressure, and the pressure can be set;PC software interface operation, realizing the relationship graph between pressure and resistance, resistivity, and conductivity;
Provide data and report generation management.
IIReference method description:
1. Use a two probe method to directly measure the overall resistivity of the polarizer, including the resistance of the probe itself, the contact resistance between the probe and the coating, the resistance of the coating, the contact resistance between the coating and the current collector, and the resistance of the current collector itself; Solve the problem that the four probe method test data cannot describe the overall battery electrode value;
2. The testing process is basically the same as the actual battery application, and a total test value includes the electronic conductivity characteristics of each part, quickly studying the influence of the process on the electrode sheet resistivity.
For LFP electrodes with high resistance, stable results can be obtained when the loading current is low, while for low resistance graphite electrodes, stable results can only be obtained when the loading current is relatively high NMC、 Graphite electrodes can obtain relatively stable measurement results with a loading current of 10mA or more. As the loading pressure increases, the resistivity of the graphite electrode decreases
4. Factors affecting the conductivity of polarizer include the content and distribution of conductive agent, mixing strength of dry powder, compaction density, bonding state between current collector and coating, etc
threeTechnical parameters:
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Specification and model
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FT-551A
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FT-551B
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1. Resistance
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10^-5～2×10^5Ω/
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10^-6～2×10^5Ω
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2. Block resistor
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10^-5～2×10^5Ω/□
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10^-6～2×10^5Ω/□
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3. Electrical resistivity
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10^-6～2×10^6Ω-cm
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10-7～2×106Ω-cm
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4. Test current
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0.1μA.μA.0μA，100µA，1mA，10mA， one hundredmA
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1A、100mA、10mA、1mA、100uA、10uA、1uA、0.1uA
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5. Current accuracy
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±0.1%
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6. Resistance accuracy
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≤0.3%
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7. PC software operation
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PC software interface: resistance, resistivity, conductivity, square resistance, temperature, unit conversion, temperature coefficient, current, voltage, probe shape, probe spacing, thickness, spectrum, report generation, sample size, pressure setting, pressure
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8. Pressure range:
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0-10kg（100N）; Other specifications can be customized, such as: （0-1000kg）
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9. Plane probe
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Copper material, diameter: 10mm; Other specifications can be customized
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10. Power supply
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Input: AC 220V±10%.50Hz power consumption:<100W
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11. Selection of Items
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Choose 1. Square probe; Choose 2. Linear probe; Purchase 3. Testing Platform;
4. Standard resistance
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