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Co3V2O8 sensing electrode and three-dimensional three-phase boundary-based YSZ electrode mixed potential NO2 sensor and preparation method thereof

A hybrid potential-type, sensitive electrode technology, applied in instruments, scientific instruments, material analysis through electromagnetic means, etc., can solve the problems of sensor sensitivity limitation, small construction area, limited performance improvement, etc., and achieve good thermal stability and The effect of chemical stability, simple preparation method, and high sensitivity

Active Publication Date: 2015-05-06
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method of constructing three-phase interfaces is that the construction area is small and the performance improvement is limited.
There are certain limitations in improving the sensitivity of the sensor only from a single aspect

Method used

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  • Co3V2O8 sensing electrode and three-dimensional three-phase boundary-based YSZ electrode mixed potential NO2 sensor and preparation method thereof
  • Co3V2O8 sensing electrode and three-dimensional three-phase boundary-based YSZ electrode mixed potential NO2 sensor and preparation method thereof
  • Co3V2O8 sensing electrode and three-dimensional three-phase boundary-based YSZ electrode mixed potential NO2 sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Co prepared in Comparative Example 1 3 V 2 o 8 And the mixed material of 10wt% YSZ particles is used as a sensitive electrode material to make NO 2 The sensor, its manufacturing process is:

[0042] The Co prepared by the aforementioned method 3 V 2 o 8 +10wt% YSZ particles were fully ground with a mortar and evenly used as a sensitive electrode material. The fabrication process of the device was the same as that of Comparative Example 1, and it was marked as sensor S10.

Embodiment 2

[0044] Co prepared in Comparative Example 1 3 V 2 o 8 And the mixed material of 20wt% YSZ particles is used as a sensitive electrode material to make NO 2 The sensor, its manufacturing process is:

[0045] The Co prepared by the aforementioned method 3 V 2 o 8 +20wt% YSZ particles were fully ground with a mortar and used as a sensitive electrode material, and the device manufacturing process was the same as that of Comparative Example 1, marked as sensor S20.

Embodiment 3

[0047] Co prepared in Comparative Example 1 3 V 2 o 8 And the mixed material of 30wt% YSZ particles is used as a sensitive electrode material to make NO 2 The sensor, its manufacturing process is:

[0048] The Co prepared by the aforementioned method 3 V 2 o 8 +30wt% YSZ particles were fully ground with a mortar and used as a sensitive electrode material. The device manufacturing process was the same as that of Comparative Example 1, marked as sensor S30.

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Abstract

The invention belongs to the technical field of a gas sensor, and particularly relates to a Co3V2O8 sensing electrode and three-dimensional three-phase boundary-based high-performance YSZ electrode mixed potential NO2 sensor and a preparation method thereof. The sensor is mainly used for detection of automobile tail gas. The sensor sequentially comprises an Al2O3 ceramic plate with a Pt heating electrode, an YSZ substrate, a reference electrode and a sensing electrode; the reference electrode is a strip-shaped Pt, the sensing electrode is a mixture of strip-shaped Co3V2O8 and YSZ, the two electrodes are separately and symmetrically prepared on two ends of the upper surface of the YSZ substrate, and the lower surface of the YSZ substrate and the Al2O3 ceramic plate with the Pt heating electrode are adhered together. The area of the three-phase boundary of a sensing electrode material is changed by changing the addition amount of the YSZ through taking the YSZ substrate as an ion conductive layer and the Co3V2O8 plus YSZ with high electrochemical catalytic activity as the sensing electrode, and the purpose of improving the sensing characteristic can be achieved.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a sensor based on Co 3 V 2 o 8 High-performance YSZ-based hybrid potential-type NO with sensitive electrodes and three-dimensional three-phase interface 2 A sensor and a preparation method thereof, the sensor can be mainly used for the detection of automobile exhaust. Background technique [0002] Human beings live in an environment full of various gases, but with the increasing air pollution, environmental problems such as acid rain, greenhouse effect, and ozone layer destruction seriously threaten the survival of human beings. Among them, the culprit causing these problems is NO x massive emissions. NO x One of the main sources of pollution is exhaust fumes from automobiles. Therefore, people urgently need to monitor the quality of the atmospheric environment and control pollution sources, so it is used to monitor NO x The gas sensor came into being. Among them, va...

Claims

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Application Information

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IPC IPC(8): G01N27/407
Inventor 卢革宇刘方猛梁喜双孙鹏
Owner JILIN UNIV
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