固体氧化物燃料电池氧化锆基电解质薄膜制备技术研究进展  

Development on Fabrication Methods of Zirconia-based Electrolyte Thin Films for Solid Oxide Fuel Cells

作　　者：徐而翔 李晓艳 陈宋璇[2] 杜国山[2] 付云枫 XU Erxiang;LI Xiaoyan;CHEN Songxuan;DU Guoshan;FU Yunfeng(School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;China ENFI Engineering Corporation,Beijing 100038,China)

机构地区：[1]清华大学材料学院,北京100084 [2]中国恩菲工程技术有限公司,北京100038

出　　处：《硅酸盐学报》2024年第5期1722-1738,共17页Journal of The Chinese Ceramic Society

基　　金：国家重点研发计划(2021YFC2900107)。

摘　　要：固体氧化物燃料电池(SOFC)具有高能量转化效率、环境友好性等特征,是全球能源环境问题的重要解决方案。电解质作为SOFC的关键组件,决定了电池的工作温度与输出性能。首先,以典型的氧化锆基电解质材料为例,介绍了其导电机理和导电性能的影响因素。为促进SOFC的商业化,电解质材料需在较低的工作温度下有较低的欧姆阻抗,电解质薄膜化是降低电池工作温度的有效方法。而后,从固相粉体成型、液相成型、气相成型3个方面综述了氧化锆基电解质薄膜的常见制备方法,并分析各种方法的优劣势。最后,对电解质薄膜的制备方法做简要展望。The solid oxide fuel cell(SOFC)is a crucial solution for addressing global energy and environmental challenges,due to its high energy conversion efficiency and environmental friendliness.The electrolyte is a key component of SOFC as it determines the operating temperature and output performance.This review introduced the mechanism and influencing factors governing the electrical conduction of zirconia-based electrolyte.The electrical conduction of zirconia-based electrolyte originates from the diffusion of oxygen ions and vacancies,thereby depending on their intrinsic properties,(i.e.,crystal structure,dopant cation,film thickness and grain size),and on operating conditions,(i.e.,temperature,oxygen partial pressure,and time).To promote the commercialization of SOFC,electrolytes should maintain a low ohmic resistance at a lower operating temperature.One effective approach is to reduce the thickness of the electrolyte while maintaining a dense microstructure.However,achieving simultaneous reduction in thickness and enhancement in density often has challenges.The fabrication methods of electrolytes mainly consist of three processes,i.e.,precursor preparation,thin film formation and heat treatment.This review represented common fabrication methods employed for zirconia-based electrolyte thin films from the perspective of solid phase powder forming,liquid phase forming and vapor phase forming methods.For solid phase powder forming methods,the precursor can be either ceramic slurry or ceramic powder.These methods are often simple with short forming time.Tape casting,screen printing,and electrophoretic deposition are representative slurry-based techniques that are used in industrial production.Tape casting enables the production of dense films with a wide range of thicknesses,allowing the prepared films to serve as supported or non-supported layers.However,conventional tape casting technology utilizes organic solvents that have environmental concerns.Thus,an environmental-friendly aqueous-based tape casting technology i

关 键 词：固体氧化物燃料电池 电解质 氧化锆 薄膜 

分 类 号：TM911.4[电气工程—电力电子与电力传动]