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Calcium Dopran Tank Chromite Powder, Sintered Body Thereof, Solid Electrolyte Fuel Cell Using It, and Method for Synthesizing Calcium Dopran Tank Chromite Powder
Calcium Dopran Tank Chromite Powder, Sintered Body Thereof, Solid Electrolyte Fuel Cell Using It, and Method for Synthesizing Calcium Dopran Tank Chromite Powder
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机译：多普兰储罐铬铁矿粉，其烧结体，使用其的固体电解质燃料电池以及合成多普兰储罐铬铁矿粉的方法
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PURPOSE:To obtain Ca doped lanthanum chromite powder at a low temp. in a short time by dewaxing a mixture contg. La, Ca and Cr in a prescribed ratio and bringing the mixture into a reaction under special conditions. CONSTITUTION:La(NO3)3, Ca(NO3)2 and Cr(NO3)3 are added to a soln. of excess oxalic acid in ethanol and the ethanol is distilled off to obtain a mixture contg. La, Ca and Cr in (1-x):x:(1-y) molar ratio (0x=0.4, 0y=0.5 and y=x). This mixture is dewaxed at =400 deg.C and brought into a reaction for =5hr by rapid heating to 900-1,000 deg.C at =300 deg.C/hr heating rate to obtain Ca doped lanthanum chromite powder. This powder is press-molded and fired at 1,200-1,400 deg.C for a short time to obtain separators 4 each made of a Ca doped lanthanum chromite sintered body. Flat cells 1 and the separators 4 are alternately laminated while interposing spacers 2, 3 and gaseous fuel feeding pipes 7, and air feeding pipes 8 are allowed to communicate with spaces 6 for feeding gaseous fuel and spaces 5 for feeding air, respectively, to obtain a solid electrolyte type fuel cell.
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