摘要
采用甘氨酸-硝酸盐法(GNP)合成了单相的钙钛矿结构Sm1-xSrxCrO3(0≤x≤0.1),并进行了XRD、SEM、直流电导率及电化学复阻抗分析测试。结果表明,Sm1-xSrxCrO3为p型半导体,体系电导率随着锶掺杂量的增加而增大。Sm1-xSrxCrO3在很宽的氧分压范围和高温水蒸汽条件下表现出良好的化学稳定性。Sm0.9Sr0.1CrO3/YSZ(SSCO1/YSZ)复合阳极在CH4和O2混合气氛中表现出较好的催化性能。YSZ的质量分数为23%的复合电极在800℃的CH4+O2混合气氛中得到的最小极化电阻为3.24Ω.cm2。
Single-phase perovskite oxide Sm1-xSrxCrO3（0≤x≤0.1） was synthesized by Glycine-Nitrate Process（GNP） and characterized by X-ray diffraction （XRD）, SEM, DC conductivity and EIS measurement, respectively. Results indicate that Sm1-xSrx CrO3 was p-type semiconductor. The conductivity increased with the increase of Sr doping concentration. Sm1-xSrxCrO3 showed a good chemical stability under both broad oxygen partial pressure and water vapor pressure at high temperatures. Sm0.9Sr0.1CrO3/YSZ （SSCO1/YSZ） composite anodes exhibited good performance for the methane oxidation reaction in CH4 and O2 mixed atmospheres. The best electrode performance was achieved for the composite with a YSZ content to （YSZ） of 23%, which gave the lowest polarization resistance of 3.24Ω.cm2 at 800 ℃ in a mixed atmosphere of CH4 and O2.
出处
《应用化学》
CAS
CSCD
北大核心
2008年第11期1334-1338,共5页
Chinese Journal of Applied Chemistry
基金
教育部重点资助项目(206044,205050)
黑龙江省教育厅科学技术研究面上资助项目(11531285)
