TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The solid oxide fuel cell further comprises: an electric current collector disposed on the cathode, where the electric current collector comprises at least one of lanthanum cobalt oxide, lanthanum strontium cobalt oxide, lanthanum strontium cobalt iron oxide, lanthanum strontium manganese oxide or lanthanum strontium iron oxide; functional layer that is disposed between the cathode and the solid oxide electrolyte and to prevent a reaction between them, where the functional layer comprises at least one of gadolinia-doped ceria, samaria-doped ceria or yttria-doped ceria.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first metal oxide has an ionic conductivity of 0.01-0.03 Siemens per cm at a temperature of 500-900 degrees C. The second metal oxide has an electronic conductivity of 100-1000 Siemens per cm and a thermal expansion coefficient of 11x 10-6-17x 10-6 Kelvin-1 at a temperature of 500-900 degrees C. The second metal oxide is of formula (A11-x1-A11x2QO3-g), (Lac3Srd3Q3w3Q3az3O3-g), (Prc4Srd4Cow4Fez4O3-g), (Lae5Srf5Q5O3-g) (Pre6Srf6Q6O3-g) or (Sm1-rSrrQ7O3-g).A1 = at least one element comprising La, Sm or Pr;A11 = at least one element of Sr, Ca or Ba;Q = at least one of Mn, Fe, Co, Ni, Cu, Ti, Nb, Cr or Sc;x1 = less than or equal to 0 to greater than 1;g = is selected such that the second metal oxide electrostatically neutral;Q3 = Co or Cr;Q3a = Fe or Mn;c3 = 0.5-0.7;d3 = 0.3-0.5;c3+d3 = less than or equal to 1;w3, z3 = 0.1-0.9;w3+z3 = less than or equal to 1;c4 = 0.4-0.8;d4 = 0.2-0.6;c4+d4 = less than or equal to 1;w4, z4 = 0.2-0.8;w4+z4 = ~\1;Q5 = Fe or Mn;e5 = 0.4-0.8;f5 = 0.2-0.6;e5+f5 = less than or equal to 1;Q6 = Fe or Mn;e6 = 0.4-0.8;f6 = 0.2-0.6;e6+f6 = less than or equal to 1;Q7 = Fe, Mn or Co; andr = 0.1-0.5.The weight ratio of first metal oxide and the second metal oxide is 90:10-30:70. The third metal oxide is ceria metal oxide comprising at least one lanthanide element other than cerium. The third metal oxide is a ceria metal oxide of formula (Ce1-qM1qO2).M1 = La, Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy or its alloy; andq = 0-1.The third metal oxide is ceria metal oxide comprising at least two lanthanide elements other than cerium, where average ionic diameter of at least two lanthanide elements other than cerium is 0.90-1.06. The elements other than cerium are samarium, praseodymium, neodymium, promethium or its alloy. The ceria metal oxide is of formula (Ce1-q1a-q2aSmq2M2q2O3).M2 = Pr, Nd, Pm, or its alloy;q1a, q2a = greater than 0 to less than or equal to 0.2; andq1a+q2a = less than or equal to 0.3, (where q2a is preferably less than or equal to q1a/2).The weight ratio of sum of the first metal oxide and the second metal oxide to the third metal oxide is 99:1-60:40. The solid oxide electrolyte comprises at least one of zirconia solid electrolyte, ceria solid electrolyte or lanthanum gallate solid electrolyte. Preferred Definitions:    the element of groups 3-12 = Mn, Zn, Ni, Ti, Nb or Cu;    lanthanide element = Ho, Yb, Er or Tm; and    x+y = 0.7-0.95.    EXAMPLE - Barium-strontium-cobalt-iron-zinc-oxide compound (Ba0.5Sr0.5Co0.8Fe0. 1Zn0.1O3-g1) (where g1 is value such that the metal oxide is electrostatically neutral) powder as a first metal oxide of perovskite-type was synthesized by using urea-polyvinyl alcohol method. Barium nitrate, strontium nitrate, cobalt nitrate, ferric nitrate, zinc nitrate, and urea were quantified at a molar ratio of 0.5:0.5:0.8:0.1:0.1:3.5. Then, polyvinyl alcohol was quantified to have the same mass as that of the urea. 1063.1 g Quantified materials were added to 50 l reactor for liquid phase materials equipped with an agitator. Then, 10 l deionized water was added to the reactor. The materials contained in the reactor were heated to 200 degrees C while being stirred, and at this temperature, the materials were left for 3 hours. The obtained gelled product was placed in an aluminum crucible and then dried in an oven at 100 degrees C for 24 hours. Then, the dried product was transferred to a calcining furnace and sintered at 1000 degrees C for 5 hours, and then the sintered product was pulverized at 2000 revolutions per minute for 24 hours. The pulverized product was dried in an oven to obtain target powder (barium-strontium-cobalt-iron-zinc-oxide compound (Ba0.5Sr0.5Co0.8Fe0.1Zn0.1O3-g1)). The powder, lanthanum-strontium-cobalt-iron-oxide compound (La0.8Sr0.4Co0.2Fe0.8O3) and 10 mole% gadolinium doped ceria were mixed in at weight ratio of 3.5:3.5:3 via ball milling using zirconia balls in ethanol media. Then, the ball milled product was mixed and dried in an oven to obtain material for a solid oxide fuel cell.