CuO系列混合氧化物电容器敏感特性的研究

STUDIES ON SENSITIVITY OF CuO-BASEDMIXED OXIDES CAPACITOR

比较了以ＣｕＯ为基的系列混合氧化物对ＣＯ２气体的敏感特性．掺有ＢａＴｉＯ３、ＢａＳｎＯ３、ＳｒＴｉＯ３的ＣｕＯ系列粉末经一定工艺制作成电容元件后，对ＣＯ２气体表现出的灵敏性足以使其做为传感元件而用于ＣＯ２气体的检测．其中ＣｕＯ－ＢａＳｎＯ３混合氧化物不仅对ＣＯ２表现出了极高的灵敏性，而且其较宽的检测范围、极短的响应时间和快速的恢复性能，被认为是最有发展前途的材料．

Characteristics for CO 2 sensing of a CuO-based mixed oxides powder were compared. Capacitance elements were made from a series of powder of CuO mixed with BaTiO 3、BaSnO 3、SrTiO 3 by means of ways. It has been shown that capacitances of elements are strongly dependent on CO 2 concentration. Comparasion shown CuO-BaSnO 3 is promising for sensing CO 2 over a wide range of concentrations. The capacitance increases rapidly within 30s after exposure to 2% CO 2, and returned rapidly to the original level after reexposure to air.