Water absorption and proton conductivity of PEM
Overview
PEM (Proton Exchange Membrane) is used as electrolyte for PEFC and FMFC. For PEM
development, it is very important to know proton conductivity and water absorption
properties. With the conventional instruments, those properties have to be measured
separately. Our newly developed system, MSB-AD-V-FC can measure water absorption
amount and proton conductivity simultaneously.
By determining water absorption equilibrium,
highly reproducible conductivity measurement is possible.
Simultaneous measurement of water absorption amount and proton conductivity Automatic measurement. Wide range of measurement conditions.
Pressure range : 1 – 10Bar
Temperature range – : 80200oC
Humidity range : 5 – 95%RH(Depending
on the measurement conditions, all these range cannot be applied.)
Water amount analyzer to Solid electrolyte membrane for fuel cell evaluation Adsorption
measurement Gravimetric method Impedance measurement Alternating current impedance
measurement (4 terminal method) Measurement temp. range 80 - 200 oC Air-circulation
bath temp. range 80 - 180 oC Measurement pressure range Atmospheric pressure - 10
bar Measurement humidity range 5 - 95%RH (only in range of 80 - 180 oC) Pretreatment
method Vacuum pretreatment or flow pretreatment Gas contacting part material SUS,
Teflon, Vespel, gold, brass, Viton, polyimide Gas Dry air, N2 Measurement program
Adsorption measurement software, Impedance measurement software Water adsorption
measurement Magnetic suspension balance 2-Position MSB (Rubotherm GmbH) No. of sample
1 Sample amount Max. 15 g (incl. sample holder) Gravimetry resolution 10µg Gravimetry
reproducibility +/- 20µg (STD) * Impedance measurement AC impedance measurement Solartron
instrument (1mHz - 20kHz)
or
Agilent Technology instrument (100Hz - 100kHz)
MSB - AD - V - FC
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