| Solid oxide fuel cell (SOFC) is a novel chemical-electric energy transformiation to generate electricity facility. Now, a main problem of SOFC operation is that exorbitant operating temperature increases the cost of SOFC's manufacture. And long-playing operation at high temperature may bring about some phenomenons such as electrode sintering, corruption, short circuit and cracking. Therefore, the researches and developmente of intermediate temperature SOFC is a necessary trend in future. However, the decrease in operation temperature can also give birth to other problems such as the decrease in O2-conduction rate and reduction of anode material's catalysis properties, which would heavily have a bad effect on cell's life. So far, there will be two pathways for the decrease in SOFC's operation temperature, one being the researches and development of novel materials with excellent properties, and two being gradual reduction of thickness of solid electrolyte film. This paper focuses on the synthesis perovskite-type intermediate temperature SOFC's key materials of novel and excellent properties. Main content presents as following:1) Two series of La1-xSrxGa1-yMgyO3-σ(LSGM) were systhsied by Solid-State Reaction and Glycine-Nitrate Process and used as electrolyte materials. The influence factors on pure crystalline phase perovskites during the process, such as calcination temperature, calcination time and calcination atmosphere, were investigated. LSGM were characterized by SEM and O2-conductivity.2) Pure crystalline phase double perovskites Sr2-xRxMgMoO6-σseries (Sr2MgMoO6-σshorly named SMMO, doped Sm Sr2MgMoO6-σis Sr2-xSmxMgMoO6-σshorly named SSMMO, doped Nd Sr2MgMoO6-σis Sr2-xNdxMgMoO6-σshorly named SNMMO) were systhsied by Sol-Gel process, and used as anode materials. The influence factors during process, such as calcination temperature, calcination time, and initial complexing agent selection were investigated. Sr2-xRxMgMoO6-σwere characterized by SEM and O2- conductivity. |
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