A solid oxide fuel cell (“SOFC”) stack device is disclosed. The SOFC stack includes SOFC units that can easily be stacked and electrically connected to one another. Furthermore, each of the SOFC units can easily be removed from the others and replaced with a new one. The fuel cell stack includes a supporting mechanism and two conducting and pressing units. The supporting mechanism includes three parts. Each part of the supporting mechanism includes slots defined therein for receiving the SOFC units. Each of the conducting and pressing units is located between two adjacent ones of the parts of the supporting mechanism.
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