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SOFC氧离子导体电解质材料的研究进展及性能优化策略
  
DOI:
中文关键词:  SOFC  电解质  ZrO2  CeO2  Bi2O3  LaGaO3
英文关键词:SOFC  Electrolyte  ZrO2  CeO2  Bi2O3  LaGaO3.
基金项目:
作者单位
李小勇,宁小亮,徐传伟,张晓娇,赵世凯,宋涛,马腾飞,丛晓彤,范东杰 山东工业陶瓷研究设计院有限公司山东 淄博 255000 
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中文摘要:
      典型的固体氧化物燃料电池(SOFC)由致密电解质、多孔阴极和阳极三部分构成。其中,电解质介于阴极和阳极之间,是一种具有全固态结构的氧化物陶瓷材料。电解质是SOFC的核心部件之一,是电池工作温度和电池性能的决定性因素。目前,对于高温电解质材料的研究与应用已经相对成熟。但是,在电池高温运行条件下,会导致电极和电解质界面反应、密封困难及使用寿命变短等问题。因此,SOFC电解质的发展逐渐趋向于中温化。但随着工作温度的降低,电解质欧姆阻抗(Ro)势必增大,使得电池的电导率下降。基于此,电解质在中温下的性能提升以及优化近年来备受关注。文中综述了几种不同类型的氧离子导体电解质最新研究进展,并论述了SOFC中低温运行条件下电解质性能提升的主要优化策略。
英文摘要:
      The typical solid oxide fuel cell (SOFC) consists of the dense electrolyte, porous cathode and anode. Among them, the electrolyte is an oxide ceramic material with all-solid-state structure, which is between the cathode and the anode. Electrolyte is one of the core components of SOFC, and it is the decisive factor for cell operating temperature and performance. At present, the research and application of high temperature electrolyte materials have been relatively mature. However, the high temperature operating conditions of the cell will bring a series of defects, such as the interface reaction between electrode and electrolyte, the difficulty of sealing and the shortening of the service life. Therefore, the development of SOFC electrolytes is gradually tending towards inter-temperature or lower. As the operating temperature decreases, the ohmic resistance (Ro) of the electrolyte is increased correspondingly, resulting in a decrease in the conductivity of the cell. On account of its, the performance improvement and optimization of electrolytes at intermediate temperatures have attracted much attention in recent years. In this paper, the latest research progress of several different oxygen ion conductor electrolytes is reviewed, and the main optimization strategies for electrolyte performance improvement under lower temperature operating conditions of SOFC are discussed.
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