Fe and Mn‐doped Ce_0.83Sm_0.085Nd_0.085O_2‐& (SNDC) powders are successfully synthesized by the simple and efficient solid‐liquid method. The crystallinity and morphologies of the powders were characterized by X‐ray diffractometer, Raman spectrum, and scanning electron microscopy. The effect of doping on sintering behavior, grain interior, and grain boundary conductivity are studied. The doping of Fe can effectively reduce the sintering temperature from 1450^oC to 1250°C and keep the same density. Compared with SNDC, 1 mol% Fe‐doped SNDC (Fe‐SNDC) sintered at 1250°C shows a higher total conductivity of 2.13 × 10⁻² S·cm^‐1 at 650°C. Also, it exhibits that doping of Fe can increase the conductivity of grain interior and grain boundary simultaneously. The present work shows that the Fe‐SNDC synthesized by solid‐liquid method can be used as a potential electrolyte for intermediate‐temperature solid oxide fuel cells.

中文翻译：

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固液法掺杂Fe和Mn的Ce0.83Sm0.085Nd0.085O2-的致密化和电导率

通过简单有效的固液方法成功合成了Fe和Mn掺杂的Ce _0.83 Sm _0.085 Nd _0.085 O _2＆（SNDC）粉末。通过X射线衍射仪，拉曼光谱和扫描电子显微镜对粉末的结晶度和形貌进行了表征。研究了掺杂对烧结行为，晶粒内部和晶界电导率的影响。Fe的掺杂可以有效地将烧结温度从1450 ^o C降低到1250°C，并保持相同的密度。与SNDC相比，在1250°C烧结的1 mol％的Fe掺杂SNDC（Fe‐SNDC）的总电导率更高，为2.13×10 ^-2 S·cm ^-1在650°C下。而且，表明Fe的掺杂可以同时增加晶粒内部和晶界的电导率。目前的工作表明，通过固液法合成的Fe-SNDC可以用作中温固体氧化物燃料电池的潜在电解质。