(US7026819-N)      Improved fuel cell stack includes a plurality of fuel cells extending from the positive to the negative end of the stack Individual cells include a porous anode member, a porous cathode member and a porous matrix of ceramic material for contg. electrolyte between the anode and cathode pairs. Adjacent cells are sepd. by impermeable, electrically conductive separator sheets in the stack of cells. Porous sealing means are placed at the outer margins of the stack fce for sealing to the gas supply and gas discharge. Includes means for delaying and controlling the migration of molten electrolyte. Also includes porous reservoirs in electrolyte conducting communication with cells at the most positive end portions of (I). The reservoirs are adapted to admit and contrain electrolyte migrating towards the most negative cells, and to restore electrolyte to the most positive cells from which electrolyte migrates.    ADVANTAGE -   New stack has improved electrolyte migration control.    (21pp)    (JP2635991-B2)      An electrolytic cell stack includes inactive electrolyte ing reservoirs at the upper and lower end portions. The reservoirs are separated from the stack of complete cells by impermeable, electrically conductive separators.    Pref. reservoirs at the negative and are intially low in electrolyte and those at the positive end are high in electrolytic fill. During stack operation electrolyte migration from the positive to negative end is offset by the inactive reservoir capacity. For combination with the inactive reservoirs a seating member of high points and low electrolyte retention is employed to limit electrolyte migration rate. This involves having a portion of increased cross-section and volume at the negative end portion of the stack relative to the midportion of the stack.    USE/ADVANTAGE -   Molten carbonate fuel cell stacks. Improved control over electrolytic migration and hence prolonged operation between servici shut-down for redistribution of electrolyte.