低温化是固体氧化物燃料电池（SOFC）发电技术的重要发展趋势。SOFC工作温度的降低不仅可极大地降低材料及制备成本，更重要的是可极大地提高其长期运行的稳定性。电解质是SOFC的核心部件，可以采用电解质薄膜化或新型电解质材料来降低SOFC的工作温度。本文概述了目前被广泛研究的低温SOFC的电解质材料，并从其结构及性能出发，重点阐述了它们各自的优点和局限性。

Reducing the operating temperature is critically important to promote the widespread implementation of the solid oxide fuel cell (SOFC) technology due to the associated advantages including reduced materials and processing cost as well as enhanced long-term stability. The principal approach to achieve reduction in operating temperature is to reduce the electrolyte thickness and adopt alternative electrolyte materials that exhibit much higher ionic conductivities than the state-of-the-art yttria-stabilized zirconia electrolyte at comparable temperatures. Here, electrolyte materials for low-temperature SOFC, including lanthanum gallate-based, ceria-based, and bismuth oxide-based materials， were briefly reviewed. The structure and specific properties such as effects of dopants, conductivity and chemical compatibility were discussed. The merits and drawbacks of these various electrolytes were also compared.