Patent ID: 8427174

Claim:
A measurement process for determination of the optimum contact pressure among components of a solid oxide fuel cell, SOFC stack in the packaging process, comprising the following measurement process steps: Step 1: Put a membrane electrode assembly, MEA in the temperature of 650-800° C. to perform NiO reduction reaction on it, then maintain the reduction status while the temperature of MEA bring down to room temperature; Step 2: Apply contact pressure to the first electrode surface of said MEA with 2 detecting probes and record the value of the contact pressure applied, in the mean time, measure the impedance value between said 2 detecting probes, and make the first relation diagram of contact pressure to impedance on a rectangular coordinate system, then, obtain the first optimum contact pressure from the first relation diagram; Step 3: Apply contact pressure to the second electrode surface of said MEA with 2 detecting probes and record the value of the contact pressure applied, in the mean time, measure the impedance value between said 2 detecting probes, and make the second relation diagram of contact pressure to impedance on a rectangular coordinate system, then, obtain the second optimum contact pressure from the second relation diagram.