Hioki RM2610 - Can Electrode Sheets Coated on both Sides be Measured

98
Can electrode sheets coated on both sides be measured?
8.4 Can electrode sheets coated on both sides be
measured?
It makes no difference whether the electrode sheet being measured is coated on one side or both
sides.
However, exercise caution with regard to the following:
• The interface resistance and composite layer volume resistivity can only be measured on the top
surface (the surface with which the probes make contact).
• In order to measure the resistance on the bottom of the sheet (the surface with which the probes
do not make contact), you will have to turn the electrode sheet over and measure it again.
• The bottom surface has very little effect on the top surface.
Since the resistivity of the composite layer and interface is much larger than the resistivity of the
collector on a typical lithium-ion battery electrode sheet, the measurement current that ows to
the collector after being applied to the top surface does not ow to the composite layer on the
bottom of the sheet, with the result that the bottom surface has almost no effect on the surface
potential of the top surface.
Composite (top)
Interface (top)
Interface (bottom)
Composite (bottom)
Collector
Current distribution
Figure: Cross-sectional diagram of measurement of double-coated electrodes