Solid oxide fuel cell stack

The invention discloses a solid oxide fuel cell stack comprising end boards and a repeating unit, the end boards comprise a front board and a rear board, and the repeating unit is arranged between the two end boards; the repeating unit is composed of a connection piece, a sealing piece, an air passage board and a cell piece; the connection piece comprises a partition board, an anode support piece, a cathode support board and a cell piece support board; and a single cell voltage outgoing point is also arranged on the repeating unit. The solid oxide fuel cell stack has the advantages that 1, output power of the cell stack can be significantly improved, service life of the cell stack is long; 2, the novel sealing material and structure are used, so that leakproofness of the cell stack can be increased, and service life of the cell stack can be effectively ensured; 3, the novel structure material and coating are used, so that attenuating property of the cell stack is reduced, and thermal cycling time of the cell