4 results about "Solid oxide fuel cell" patented technology

The invention discloses a solid-oxide-fuel-cell cathode gas flow field plate which is used to uniformly distribute an oxidation gas and collect cathode current. The cathode gas flow field plate is formed by multiple tooth-shaped ripple blocks which are in parallel connection and have same dimension, each tooth-shaped ripple block is formed by two tooth-shaped ripple strips (3 and 4) which are in parallel arrayed connection after being staggered at a distance (7), each tooth-shaped ripple strip (3 and 4) is formed by multiple flat-top bosses (2) and flat plates (1) which are in alternate connection, each flat-top boss (2) has a tooth-shaped contour, the flat plates (1) are connected with the root parts of the flat-top bosses (2) to form tooth-shaped ripples, and the cross section of each flat-top boss (2) has a shape same to the shape of an isosceles trapezoid without a bottom edge. The cathode gas flow field plate of a fuel cell is capable of overcoming the problems that a conventional flow field is large in gas pressure reduction and low in fuel utilization rate. By employing a roll forming technology for preparing the flow field plate, the flow field plate is simple in technology, can be precisely formed and high in product qualified rate.

An interconnector material having a high degree of densification, a unit cell for a solid oxide fuel cell that has a high degree of gas tightness at the contact interface between the electrolyte and the interconnector, and a solid oxide fuel cell having superior reliability are provided in an inexpensive manner. A material for a solid oxide fuel cell interconnector, comprising (SrxE1-x)TiO3 (wherein x satisfies 0.01≦x≦0.5, and E represents one or more elements selected from the group consisting of La, Pr, Nd, Sm and Gd) and Al2O3, wherein the Al2O3 content relative to the (SrxE1-x)TiO3 is not less than 2 mol % and not more than 10 mol %.