FUEL CELL STACK

A fuel cell stack (100) includes a plurality of cells (10) that are stacked in a stacking direction. Each cell (10) includes a power generating body (1) and a pair of separators (2). The separators (2) respectively are arranged on opposite surfaces of the power generating body (1) in the stacking direction. Each separator (2) includes a first surface (2a) and a second surface (2b). A titanium nitride layer (3) is formed on the first surface (2a), and a conductive carbon layer (4) is formed on the titanium nitride layer (3). A titanium nitride layer (3) is formed on the second surface (2b). Each separator (2) is in contact with the power generating body (1) via the titanium nitride layer (3) and the carbon layer (4) on the first surface (2a) and is in contact with one of the separators (2) of an adjacent cell (10) via the titanium nitride layer (3) on the second surface (2b).