A SOFC type fuel cell being small in size and large in output while
providing good efficiency and being excellent in starting characteristics
and load variation characteristics, is presented. A honeycomb type
solid-oxide fuel cell is formed of a honeycomb structural body having
square cell in cross section, wherein cells adjacent to wall surfaces
constituting a fuel pole cell (a) function as air pole cells (b) and
cells adjacent to the corners of wall surfaces of the fuel pole cell and
adjacent to wall surfaces constituting air pole cell function as cooling
air cells (c), whereby fuel pole cells, air pole cells and cooling air
cells are arranged in longitudinal and lateral rows so that cells of the
same type appear in every other location.