摘要
固体氧化物燃料电池(SOFC)是一种能量转换效率高和环境友好的新能源装置。采用固相反应法制备了8种具有钙钛矿结构的锶、镁掺杂的镓酸镧固体电解质材料,对其相结构、致密度和离子电导率进行了研究。结果表明,降低烧结升温速率有利于烧结产品的致密化,通过锶、镁掺杂有利于提高该材料的离子电导率;与使用8%mol氧化钇稳定的氧化锆(即8YSZ,其工作温度为1000℃)相比,使用该材料作为SOFC电解质,降低了SOFC的工作温度。
Solid oxide fuel cells(SOFC) are an environmentally clean and efficient source of energy. In this paper,eight kinds of strontium and magnesium-doped LaGaO_3 solid electrolytes with perovskite structure were prepared by means of solid state reaction. The phase structure, density and ionic conductivity of these materials were measured. The results reveal that more densified LSGM materials can be obtained when the heating-up speed of sintering was decreased, and the ionic conductivity can be increased by doping certain quantity of strontium and magnesium. Therefore, by using these materials as electrolytes, the working temperature of SOFCs can be lowered, while the working temperature of 8%mol yttria-doped zirconia (8YSZ) is 1 000 ℃.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
2004年第10期1176-1180,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家留学回国人员基金资助项目
作者简介
汪灿(1975-),男,安徽安庆人,合肥工业大学硕士生;刘宁(1962-),男,安徽合肥人,博士,合肥工业大学教授,博士生导师.
