铜液定氢传感器电解质CaZr1-xAlxO3-α的电化学性能及质子传输机理研究

项目名称： 铜液定氢传感器电解质CaZr1-xAlxO3-α的电化学性能及质子传输机理研究

项目编号： No.51464038

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 矿业工程

项目作者： 包金小

作者单位： 内蒙古科技大学

项目金额： 46万元

中文摘要： 对金属熔液中的氢含量进行准确、简便地测量在冶金及材料生产过程中具有十分重要的意义，但现有的氢传感器存在着连续工作时间短、测量精度差和价格昂贵等一系列问题，研究较为广泛的氢传感器电解质（In掺杂CaZrO3）在低温领域有较好的化学稳定性，且在铝业定氢传感器中获得了应用，但在1473K以上环境下化学稳定性差，影响掺杂效果，导致金属液定氢传感器的测量精度不高，限制了其在工业环境中的应用。因此，本课题将着重研究Al掺杂CaZrO3质子导电固体电解质的电化学特性的基础科学问题，明确Al掺杂对CaZrO3质子导电固体电解质材料化学稳定性的影响，阐明烧结温度、掺杂量和烧结气氛等对质子导电固体电解质的质子迁移率、导电活化能、导电率等电化学性能的影响，研究掺杂Al对CaZrO3质子导电固体电解质子传输机理，通过研究旨意替换氢传感器的电解质，解决高温不稳定和连续测量时间短的缺点，为更高效的氢传感器开发奠定基础。

中文关键词： 氢传感器；固体电解质；质子导体；铜溶液；锆酸钙

英文摘要： The developed hydrogen sensors still have the following problems up to now: short continuous working time, measurement precision to be improved and too high price. The existing hydrogen sensor electrolyte (CaZrO3 doped with In) has poor chemical stability under a high-temperature environment, which affects the doping effect thus causing the poor measurement precision of the liquid copper hydrogen sensor. Therefore, this Subject will focus on the electrochemical characteristics of CaZrO3 proton-conducting solid electrolyte doped with Al and some other basic scientific problems to lay the foundation for the development of more efficient hydrogen sensors. 1) Indicate the impact of the doping of Al on the chemical stability of the proton-conducting solid electrolyte material. 2) Demonstrate the impact of the sintering temperature, doping quantity, sintering atmosphere, etc. on the proton mobility, conducting activation energy, electric conductivity and other electrochemical characteristics of the proton-conducting solid electrolyte. 3) Study the transmission mechanism of Al doping CaZrO3 proton-conducting solid electrolyte. The above researches aim at replacing the electrolyte of hydrogen sensor to figure out the problems with instability under high temperature and short continuous measuring time.

英文关键词： Hydrogen sensor;Solid electrolyte;proton conductor;liquid copper;Calcium zirconate