文献类型：期刊文献

中文题名：反馈部件的性能参数对热电型气体传感器的影响

英文题名：Effect of material properties of feedback part on thermoelectric gas sensor

作者：黄琥[1];栾伟玲[1];毛顺杰[1];涂善东[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2008

卷号：14

期号：5

起止页码：883

中文期刊名：功能材料与器件学报

外文期刊名：Journal of Functional Materials and Devices

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金(50472046);上海市教委曙光计划基金;上海市学科带头人计划基金(6XD14207)

语种：中文

中文关键词：热电材料;铅酸钡锶;氢气传感器

外文关键词：thermoelectric material ; Bal-xSrxPbO3 ; hydrogen sensor

摘要：热电型气体传感器具有广阔的应用前景。然而在设计制备过程中,通常直接选用热电综合性能较好的材料作为反馈部件,缺乏对热电性能各参数的具体研究,因此在选材上至今尚缺足够的科学依据。本文采用固相反应法和射频磁控溅射技术,分别制备了不同化学配比的Ba1-xSrxPbO3(0≤x≤1)热电材料和对氢气敏感的Pt催化剂层,形成热电型氢气传感器。在相同氢气浓度下测试了各氢气传感器的输出电压,研究了热电参数对传感器性能的影响度。测量结果表明,热电材料的Seebeck值和热导率对热电氢气传感器性能起关键性作用。该研究为制备高性能热电型气体传感器的反馈部件提供了可靠的选材依据。以SrPbO3为反馈部件制备热电氢气传感器,其测试范围可弥补市售氢气传感器因测量范围窄难以满足GB15322的问题,可用于较高氢气浓度的测量和泄漏情况的安全评估。
As a promising sensor, thermoelectric type gas sensor has attracted lots of interests. Normally, high performance thermoelectric materials with good all -around properties were chosen as the feedback part, while the study on the influence of each thermoelectric parameter was not well conducted till now. There has been a general lack of scientific understanding to support the material selection. In this paper, Bal-xSrxPbO3 （0≤x ≤ 1 ）and Pt films, were respectively prepared via solid reaction method and RF magnetron sputtering to compose a thermoelectric hydrogen sensor. The influences of thermoelectric parameters on sensor performances were investigated by comparing the output voltage of sensors, when hydrogen mixed Air with the same concentration was introduced as the testing gas. It was found that, Seebeck coefficient and thermal conductivity took great influence on the sensor＇s performance. This result provides a credible criterion on the selection of feedback material for thermoelectric gas sensor. Furthermore, taking SrPbO3 as a feedback part, a thermoelectric hydrogen sensor with wide detecting range was prepared, while commercialized hydrogen sensors couldn＇t meet the standard of GB15322. This thermoelectric hydrogen sensor could be widely introduced to measure higher concentration hydrogen and evaluate the security of hydrogen leakage.