Interconnect set of planar solid oxide fuel Cell having flow paths

By adhering substrates in a fuel cell into a substrate set and stacking the substrate sets into a fuel cell stack, a large space for chemical reaction in the stack is formed, and a space required for the stack is greatly saved. An interconnect set of a planar solid oxide fuel cell having flow paths, said interconnect set comprising: (a) a plurality of adhered interconnects, said interconnect comprising: (i) a first flow area (11), said first flow area comprising: - a first channel (111); - more than one first inlet (114); and - more than one first outlet (116); and (ii) a second flow area (12), said second flow area comprising - a second channel (121); - more than one second inlet (124); and - more than one second outlet (126); and (b) a seal (13), wherein said first flow area is deposed on a surface of said interconnect, said more than one first inlet (114) is connected with said first channel (111) at an end of said first flow area, and said more than one first outlet (116) is connected with said first channel (111) at the other end of said first flow area; wherein said second flow area is deposed on the other surface of said interconnect, said more than one second inlet (124) is connected with said second channel (121) at an end of said second flow area, two said second inlets (124) are deposed at two sides of said first outlet (126) of said first flow area, said more than one second outlet (126) is connected with said second channel (121) at the other end of said second flow area, and said second outlet (126) is deposed between two said first inlets (114) of said first flow area; wherein each channel of said first channel (111) and said second channel (121) has a plurality of ribs (112, 122), a furrow (113,113a,123,123a) is located between each two adjacent ribs, said furrow is selected from a group consisting of a vertical furrow and a horizontal furrow, and a plurality of said furrows is serially connected to obtain a plurality of flow paths; and wherein said seal (13) is correspondingly deposed over rims of said interconnect set to prevent operational fluids from leaking out.