无机材料学报2012，Vol.27Issue(7)：751-756,6.DOI:10.3724/SP.J.1077.2012.11488
甘氨酸-硝酸盐法合成GdBaCo2O5+δ阴极材料及其性能
Synthesis and Characterization of GdBaCo2O5+δ Cathode Material by Glycine-nitrate Process
摘要
Abstract
GdBaCo2O5+δ(GBCO) powders were synthesized by the glycine-nitrate process (GNP) with different glycine/metal ratios (G/M) and characterized as cathode material for intermediate temperature solid oxide fuel cell(IT-SOFC). The effects of G/M ratios on the performance and properties of GBCO electrodes including the morphology, crystal structure, electrical conductivity and electrochemical properties were evaluated. The GBCO powder synthesized at G/M ratio of 3.0 (GBCO-3.0) showed the highest specific surface area. XRD results proved that the precursor powders calcined at 1000℃ for 5 h formed GBCO single-phase when the ratio of glycine to metal was in the range of 2.5-3.5. There were no chemical reaction occurred between the GBCO cathode and the Sm0.2Ce0.8O1.9 (SDC) electrolyte after calcination at HOOD. The electrical conductivities of all GBCO cathodes were over 100 S/cm at intermediate temperature (500-800℃). The GBCO-3.0 cathode calcined at 1050℃ exhibited the lowest polarization resistance (Rp) of 0.125 Ω·cm2 at 750℃关键词
GdBaCo2O5+δ/电导率/电化学性能/甘氨酸-硝酸盐法/阴极Key words
GdBaCo2O5+δ/ electrical conductivity/ electrochemical performance/ glycine-nitrate process/ cathode分类
信息技术与安全科学引用本文复制引用
靳宏建,王欢,张华,金江..甘氨酸-硝酸盐法合成GdBaCo2O5+δ阴极材料及其性能[J].无机材料学报,2012,27(7):751-756,6.基金项目
江苏高校优势学科建设资助项目 （）
