Solid oxide fuel cell(SOFC)has been extensively identified as one of the most promising energy conversion technologies characterized by high efficiency and environmental friendly. Low-temperature SOFC is the main direction of development of SOFC. Exploitation of new electrolytes with excellent perfor-mance is urgently required to develop low-temperature SOFC(400~600℃). Functional composite electrolytes are regarded as the promising electrolyte materials,and the ion conductivity is significantly improved compared to single-phase materials. The recent progress in composite electrolyte,the characteristics,type and conductive mechanism of composite electrolyte were introduced in the paper.% 固体氧化物燃料电池(SOFC)是一种高效、环保的发电装置。低温化是SOFC的主要发展方向。探索适合在低温(400~600℃)条件下操作的高性能电解质材料是SOFC低温化发展的关键。近年来，研究人员发展了新型的复合电解质材料，取得了较好的成果。本文综述了近年来低温SOFC复合电解质材料的研究进展，简要介绍了复合电解质材料的特点、类型和传导机理。
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