CAJ | 학술논문

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.
저온화시고체양화물연료전지(SOFC)발전기술적중요발전추세.SOFC공작온도적강저불부가겁대지강저재료급제비성본,경중요적시가겁대지제고기장기운행적은정성.전해질시SOFC적핵심부건,가이채용전해질박막화혹신형전해질재료래강저SOFC적공작온도.본문개술료목전피엄범연구적저온SOFC적전해질재료,병종기결구급성능출발,중점천술료타문각자적우점화국한성.
Reducing the operating temperature is critically important to promote the widespread imple-mentation 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.