摘要
采用共沉淀法合成了氧化钪稳定氧化锆(9 mol%Sc_2O_3,ScSZ)粉末。应用热膨胀分析仪研究了ScSZ粉末的烧结特性,采用扫描电镜观察了烧结试样的微观组织,利用交流阻抗法测定了ScSZ电解质在500～900℃的电导率。制备了以ScSZ为电解质、Cu-CeO_2-ScSZ为阳极、ScSZ-LSM为阴极的阳极支撑燃料电池。在700℃时,直接以氢气、丁烷和甲烷为燃料,测得的电池最大输出功率密度分别为280 mW/cm^2、142 mW/cm^2和120 mW/cm^2。
Scandia-stabilized zirconia （9 mol% Sc2O3, ScSZ） powder was synthesized using a co-precipitation technique. The sintering characteristics of the ScSZ powder and the microstructures of sintered samples were examined with dilatometry and SEM. The electrical conductivity of ScSZ electrolyte was measured using the AC impedance method in the temperature range from 500℃ to 900℃. The ScSZ powder was used to prepare anode-supported fuel cells using a tape casting technique. The cells with a Cu-CeO2-ScSZ anode and a ScSZ-LSM cathode demonstrated the ability to directly operate with dry hydrogen, butane and methane fuels at 700℃. The cell maximum power densities were 280 mW/cm^2, 142 mW/cm^2 and 120 mW/cm^2 for H2, c4H10 and CH4 fuel, respectively.
出处
《中国有色冶金》
北大核心
2009年第1期57-63,共7页
China Nonferrous Metallurgy
基金
国家自然科学基金项目(50564002)
国家重点基础研究发展计划(973计划)项目(2008CB617603)
