High temperature-fuel cell stack e.g. solid oxide fuel cell stack, is tensioned by one of temporary tensioning devices, where device is made of plastic material, which burns at temperature lower than operating temperature of cell stack

摘要

The cell stack (10) is tensioned by one of temporary tensioning devices such as a plastic sleeve (12), plastic screw (14), plastic nut, plastic tape, shrinking foil and/or plastic bar. The temporary tensioning device is made of a plastic material, which burns at a temperature that is lower than an operating temperature of the cell stack. Independent claims are also included for the following: (1) a method for temporary tensioning of a high temperature-fuel cell stack (2) a method for removing a temporary tensioning device of a high temperature-fuel cell stack.