摘要:
A solid electrolyte based on magnesia-doped ceria is described, having a composition represented by general formula Ce1-x-yMxMgyO2-d, wherein M stands for Y, Ca or Sr, and the ranges of x and y are defined by the inequalities of 0.01≦x
摘要翻译:描述了一种基于氧化镁掺杂的氧化铈的固体电解质,其具有由通式Ce 1-xy M x O y O y O 其中M代表Y,Ca或Sr,x和y的范围由不等式0.01 <= x <0.3,0.01 <= y <= 0.6和0.02 < = x + y <= 0.7。 该组合物可以形成适合用作中温固体氧化物燃料电池或其它电化学装置的氧离子传导固体电解质的烧结体。 与类似制备的Gd掺杂的二氧化铈电解质相比,具有合适的x和y值的固体电解质具有低成本,高稳定性和可接受的离子导电性。
摘要:
A method for the preparing pure, thermally stable and high surface area ceria is described, wherein the ceria maintains a surface area of 12 m2/g after calcination at 980° C. in air for 4 hours. In the method, an aqueous solution containing Ce3+, Mg2+, organic acid and organic polymer is prepared and then evaporated to obtain a gel. The gel is calcined to obtain a mixed oxide, and then MgO is leached from the mixed oxide with a solvent to obtain raw ceria. The raw ceria is then washed, filtered and dried to obtain a ceria product.
摘要:
A method for the preparing pure, thermally stable and high surface area ceria is described, wherein the ceria maintains a surface area of 12 m2/g after calcination at 980° C. in air for 4 hours. In the method, an aqueous solution containing Ce3+, Mg2+, organic acid and organic polymer is prepared and then evaporated to obtain a gel. The gel is calcined to obtain a mixed oxide, and then MgO is leached from the mixed oxide with a solvent to obtain raw ceria. The raw ceria is then washed, filtered and dried to obtain a ceria product.