欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用固相反应法成功制备了双相质子导体BaCe0.9Y0.1O3-δ/La1.95Ca0.05Ce2O7-δ（7∶3、6∶4、5∶5、4∶6、3∶7）。用X射线衍射仪、扫描电子显微镜分别对样品的物相结构、微观形貌进行了表征,对样品在CO2和沸水中的稳定性进行了研究,并应用IM6e型电化学工作站测定了其在空气、氩气、湿润的4%H2/Ar 3种气氛从450～850℃的电导率。实验结果表明,不同比例复合的样品经1500℃烧结后均形成了明显的双相结构且获得了致密的烧结体。随着样品中La1.95Ca0.05Ce2O7-δ比例的增加,其对CO2和沸水的化学稳定性增加。在所研究的各种比例的复合材料中,BaCe0.9Y0.1O3-δ-La1.95Ca0.05Ce2O7-δ（3∶7）具有最高的电导率,850℃时在湿润的4%H2/Ar气氛下的电导率为2.49×10-2S/cm,电导活化能为1.13eV。
英文摘要：
The dual-phase proton conductors BaCe0.9Y0.1O3-δ/La1.95Ca0.05Ce2O7-δ（7∶3、6∶4、5∶5、4∶6、3∶7） were successfully synthesized by the solid state reaction method. The phase composition and microstructure of the samples were investigated by XRD and SEM. Chemical stability agains~ CO2 and boiling water was test- ed. The total conductivities of the samples in air, Ar and wet 4%H2/Ar from 450℃ to 850℃ were measured by IM6e electrochemical workstation. The results indicate that the samples sintered at 1500℃ with different ratio consist of the BaCe0.9Y0.1O3-δ and La1.95Ca0.05Ce2O7-δ dual-phase composition and the samples are very dense after sintered. With La1.95Ca0.05Ce2O7-δ e content increase in BaCe0.9Y0.1O3-δ-La1.95Ca0.05Ce2O7-δ dual phase sam- ples, the samples show an increased chemical stability against CO2 and boiling water. The sample with BaCe0.9Y0.1O3-δ-La1.95Ca0.05Ce2O7-δ （3 ： 7） has the highest conductivity among the samples and its conductivity is 2.49 X 10-2 S/cm at 850℃ in wet 4% H2/Ar. Its conducting activity energy is 1.13eV.
同期刊论文项目
同项目期刊论文
A novel amperometric hydrogen sensor based on nano-structured ZnO sensing electrode and CaZr0.9In0.1
期刊信息
位置：