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YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor based on NiO sensitive electrode and preparation method of YSZ (yttria-stabilized-zirconia) -based HCs gas sensitive sensor

A gas-sensing sensor and sensitive electrode technology, which is applied to instruments, scientific instruments, electrochemical variables of materials, etc., can solve the problems of obvious influence on response performance, and achieve the effects of strong anti-interference ability, high response and sensitivity, and simple structure.

Active Publication Date: 2014-12-10
宁波永林智控科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shape of the sensitive electrode has a more obvious influence on the response performance of the YSZ-based hydrocarbon (HCs) sensor.

Method used

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  • YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor based on NiO sensitive electrode and preparation method of YSZ (yttria-stabilized-zirconia) -based HCs gas sensitive sensor
  • YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor based on NiO sensitive electrode and preparation method of YSZ (yttria-stabilized-zirconia) -based HCs gas sensitive sensor
  • YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor based on NiO sensitive electrode and preparation method of YSZ (yttria-stabilized-zirconia) -based HCs gas sensitive sensor

Examples

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preparation example Construction

[0040] A kind of preparation method based on NiO sensitive electrode YSZ base HCs gas sensor disclosed by the present invention as claimed in claim 1, comprises the following steps:

[0041] A Use tape casting technology to make YSZ green ceramic sheets with a thickness of 0.5-0.7 mm (excluding 0.6 mm), and put them into a sintering furnace after debinding for 20 hours at 350 ° C ~ 400 ° C in the air;

[0042] B The NiO sensitive electrode material with flower-like nano-morphology is prepared by hydrothermal synthesis method;

[0043] One side of the YSZ solid electrolyte described in C is provided with a sensitive electrode slurry of porous nano-NiO, and the preparation method of the sensitive electrode slurry is to mix the NiO powder prepared in B with terpineol slurry (by 70% terpineol+30 % ethyl cellulose preparation) in an agate mortar and mix and grind evenly, the thickness of the sensitive electrode is 20-30 μm;

[0044] D After drying the sample ob...

Embodiment 7

[0054] The difference between Examples 7-11 and Examples 1-5 is that the particle size of NiO nanomaterials used for sensitive electrodes is 80-120nm, and the content of NiO nanomaterials is 25-30% (wt) prepared by terpineol slurry , after multiple times of printing by screen printing technology, the thickness of the sensitive electrode described in the above table Examples 1-5 is formed, and the thickness of the solid electrolyte The debinding temperature corresponds to the debinding temperature in Examples 1-5 and is respectively changed to: 358°C, 350°C, 380°C, 370°C, 400°C . That is, the debinding temperature in Example 7 is 358°C; the debinding temperature in Example 8 is 350°C; the debinding temperature in Example 9 is 380°C; the debinding temperature in Example 10 is 370°C; The temperature of the glue is 400°C (the other parts of this article are expressed in a similar way to the line drawn in this paragraph, and the explanations are similar to this sentence, except fo...

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Abstract

The invention discloses an YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor based on a NiO sensitive electrode and a preparation method of the YSZ (yttria-stabilized-zirconia)-based HCs gas sensitive sensor. YSZ solid electrolyte is prepared by adopting a tape casting technology, the NiO sensitive electrode and a Pt reference electrode are formed in a printing manner by adopting a thick-film screen printing technology, and an electrode lead is led out. A YSZ solid oxygen ion conductor material is used as the solid electrolyte of the HCs sensor, the flower-shaped nano-topography NiO is used as the sensitive electrode, no liquid phase component is used, the safety is high, the sensitivity is high, the selectivity is good, and the safety is good; moreover, the sensor is simple in structure, small in size and simple in preparation process. When the HCs sensor works, no external working voltage is needed, and the detection range of the HCs concentration is 0 to 500ppm.

Description

technical field [0001] The invention relates to the preparation of a YSZ-based HCs gas sensor based on a flower-shaped nano-morphology sensitive electrode for HCs concentration measurement. [0002] All references to HCs herein mean hydrocarbons. [0003] Background technique [0004] With the rapid increase of the number of automobiles in our country, the air pollution in urban areas of our country is developing from soot-type pollution to automobile exhaust-type pollution; automobile exhaust pollution has become the largest source of air pollution in our country, and more and more urban traffic congestion In the state of idling, the car will produce more gases harmful to human health, such as CO, NO 2 , HCs, etc., these gases entering the car will also seriously affect the health of drivers and passengers. Although there are relevant environmental regulations and standards on vehicle exhaust emissions, the amount of pollutants emitted will vary with the prolongation...

Claims

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Application Information

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IPC IPC(8): G01N27/26G01N27/407
Inventor 孙寿通王林沪钱和伟钱小伟
Owner 宁波永林智控科技有限公司
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