采用固相合成法制备了BaCe0.9Y0.1O3-α、BaCe0.85Y0.15O3-α和BaCe0.9Sm0.1O3-α质子导体。X射线衍射（XRD）结果表明掺10%Y的物料形成了纯净的钙钛矿型固溶体；而掺15%Y的物料不含Y2O3，主相为钙钛矿型固体电解质。据此推断，Y在BaCeO3中的固溶度极限大于0.15。掺10%Sm物料的XRD谱未显示有Sm2O3存在，因此Sm在BaCeO3的固溶度极限大于0.10。激光散射粒度分析结果表明合成后粉体颗粒的平均粒径变大，粒径5μm左右的颗粒所占比例最高。TG-DSC分析表明质子导体的合成温度为1360℃。扫描电镜（SEM）的结果显示，质子导体由分布均匀的大小两种颗粒构成，颗粒尺寸在1μm—10μm之间。BaCe0.9Y0.1O3-α和BaCe0.9Sm0.1O3-α脱氢电池对铝液的脱氢结果表明，脱氢电流随着铝液温度的升高，水蒸气压的增大，外加电压的增加而依次增大。用自制的CaZr0.9In0.1O3-α测氢传感器测得铝液温度780℃，水蒸气压为4122.8Pa和4366.0Pa时铝液中的氢活度分别为0.0536和0.0445 mlH2/100gAl。
BaCe0.9Y0.1O3-α，BaCe0.85Y0.15O3-α and BaCe0.9Sm0.1O3-α proton conductors were prepared by solid state reaction. X-ray Diffraction(XRD) indicated the powders doped 10%Y were single perovskite phase. The powders doped 15%Y and 10%Sm didn`t have Y2O3 and Sm2O3 respectively. It was concluded that solid sulubility limit of Y is above 0.15 and that of Sm is above 0.10 in BaCeO3. By laser light scattering paticle size analysis indicated that average particle size of powders changed larger and particles that particle size is about 5μm accounted for the most quantitatively after calcination. TG-DSC analysis displayed the sintering temperature of proton conductors was about 1360℃. SEM showed these proton conductors were composed of two particles whose size ranged from 1μm to 10μm. The Dehydrogenation result indicated deydrogenation current getted higher when the temperature of Al melt,water vapor pressure and external voltage getted higher independently. By CaZr0.9In0.1O3-α hydrogen sensor the hydrogen activity was 0.0536 and 0.0445 mlH2/100gAl when the temperature of Al melt was 780℃, PH2O was apart 4122.8Pa and 4366.0Pa.
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