Gd_2O_3掺杂ZrO_2电解质材料的制备和电性能的研究  

Study on Preparation and Electrical Properties of Gd_2O_3-doped ZrO_2 Electrolyte Material

作　　者：张强[1] 林振汉[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《上海有色金属》2008年第4期157-160,共4页Shanghai Nonferrous Metals

摘　　要：用溶胶-凝胶法制备了含10mol％Gd2O3的水合ZrO2，通过喷雾低温干燥、高温煅烧获得10GdSZ粉体，经喷雾制粒得到球状、不团聚、流动性好的粉体。在15MPa压力下压制成陶瓷片。坯片在1350—1600℃温度下烧结，烧结密度达到理论密度的98％。用两探针法测定电解质的电导率。结果表明，制备的10GdSZ电解质材料的电导率，在700℃下达到6．8×10^-1S·cm^-1，适于制作中温固体电解质材料。Hydrated ZrO2 containing 10 mol% Gd2O3 were prepared by sol-gel method. 10GdSZ powders were obtained via low temperature spray drying and high temperature calcining. The powders were spherical, non-agglomerated and featured good gluidity. Ceramic sheets were obtained at 15 MPa pressure. Then they were sintered at the temperature range between 1350℃ and 1600℃. The density of the sintered sheets reached 98 % of the theoretic density. The conductivities of the electrolyte were measured by 2 probe method. The results showed that the conductivities of the prepared electrolyte 10GdSZ reached 6.8 × 10^-3 S·cm^-1 at 700℃. It was indicated that 10GDSZ is a better candidate for the solid electrolyte material of intermediate temperature.

关 键 词：溶胶-凝胶法 电解质 电导率 掺杂 晶界 

分 类 号：O611.3[理学—无机化学]