Mo-doped La₂Ce₂O₇ with varied concentrations are prepared by the traditional citrate-nitrate combustion method. The effects of the phase structure of Mo-doped La₂Ce₂O₇ are investigated by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy and conductivity measurements. X-ray diffraction patterns reveal that all La_2-xMo_xCe₂O_7+δ samples have a cubic structure. Neverly, hole can be found on the surface of the samples from scanning electron microscopy. Raman spectra show that the different vibrating structures of pellets can be changed by introducing Mo into La₂Ce₂O₇. Detailed X-ray photoelectron spectroscopy studies on the oxidation states of La₂Ce₂O₇ and La_1.85Mo_0.15Ce₂O_7+δ indicate ratios of O_C to O_T (O_T = O_C + O_L) are between 32.21% and 46.24%. The conduction behaviour of Mo doped La₂Ce₂O₇ electrolyte is seriously researched under air and 5%H₂-95%Ar conditions at 350–700 °C, and the highest conductivity of 7.36 × 10⁻³ and 1.65 × 10⁻² Scm⁻¹, respectively, are obtained with La_1.85Mo_0.15Ce₂O_7+δ pellets at 700 °C. The highest power density of single cells with the La_1.85Mo_0.15Ce₂O_7+δ electrolyte is approximately 0.643 Wcm⁻² at 700 °C, suggesting that Mo-doped La₂Ce₂O₇ can be used to substantially improve the electrochemical performance of low-temperature solid oxide fuel cells.

采用传统的柠檬酸-硝酸盐燃烧法制备了不同浓度的钼掺杂La ₂ Ce ₂ O ₇。通过X射线衍射，扫描电子显微镜，拉曼光谱，X射线光电子能谱和电导率测量研究了Mo掺杂的La ₂ Ce ₂ O ₇相结构的影响。X射线衍射图谱显示所有La _2-x Mo _x Ce ₂ O _{7 +δ}样品具有立方结构。从不通过扫描电子显微镜在样品表面上发现孔。拉曼光谱表明，通过将Mo引入La ₂ Ce ₂ O ₇可以改变颗粒的不同振动结构。La ₂ Ce ₂ O ₇和La _1.85 Mo _0.15 Ce ₂ O _{7 +δ}的氧化态的详细X射线光电子能谱研究表明O _C与O _T之比（O _T  = O _C  + O _L）介于32.21％和46.24％之间。Mo的传导行为掺杂的La ₂ Ce的₂ ö ₇电解质空气和5％H下认真研究₂ -95％Ar的条件下在350-700℃，和7.36×10导电率最高^-3和1.65×10 ^-在700°C下分别用La _1.85 Mo _0.15 Ce ₂ O _{7 +δ}球团获得² Scm ^-1。使用La _1.85 Mo _0.15 Ce ₂ O _{7 +δ}电解质的单电池的最高功率密度约为0.643 Wcm ^-2在700°C的温度下，这表明Mo掺杂的La ₂ Ce ₂ O ₇可用于实质上改善低温固体氧化物燃料电池的电化学性能。