CERAMIC FUEL CELL (ALTERNATIVES) Russian patent published in 2004 - IPC

FIELD: fuel cells. SUBSTANCE: novelty is that proposed ceramic fuel cell has among other things yttrium oxide stabilized bismuth oxide ceramic material conducting oxygen ions with zirconium oxide introduced therein, niobium oxide stabilized bismuth oxide ceramic material conducting oxygen ions, copper cermet anode electrode disposed in fuel feed channel of bismuth oxide fuel cell or channel-to-channel passages specially made in ceramic material of fuel cell. According to one of alternatives ceramic fuel cell has oxidant feed channel, cathode electrode installed in mentioned oxidant feed channel, fuel feed channel, anode electrode installed in mentioned fuel feed channel, and stabilized bismuth oxide ceramic material conducting oxygen ions which is installed between cathode electrode and anode electrode. Mentioned ceramic may be stabilized with yttrium or niobium oxide and may incorporate zirconium oxide. Fuel cells that have proposed ceramic composition are capable of maintaining their serviceability at temperatures as high as up to 650 C. According to some other alternatives zirconium oxide coating is introduced between stabilized ceramic material and anode electrode. In addition ceramic electrodes, such as those made of LXM compound, where L means lanthanum (La), M means manganate (MnO₃), and X means Pb, Sr, Ca, or Ba, may have surface silver layer. Anode may also have copper cermet. EFFECT: eliminating soot deposits in ceramic material channels causing problems when using nontransformed organic fuel. 46 cl, 4 dwg