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CeO2-based mixed potential type acetone sensor with La0.8Sr0.2CoO3 as sensitive electrode, and production method and application thereof

A hybrid potential-type, sensitive electrode technology, which is applied in the direction of instruments, scientific instruments, and electrochemical variables of materials, can solve problems such as difficult to obtain high sensitivity and difficult acetone detection, and achieve excellent ion conductivity and chemical stability. Conditions Effects of controlling and improving sensitivity

Active Publication Date: 2016-11-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes two types of sensors: one that use special solids called Ce3/4

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the accuracy and reliability of measuring concentrations of volatile gases like acetaldehyde (CHGA2) in airborne pollution caused by industrial processes involving combustion sources. Current methods involve expensive equipment and complex procedures requiring highly trained operators who cannot perform them accurately enough without risking accidents.

Method used

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  • CeO2-based mixed potential type acetone sensor with La0.8Sr0.2CoO3 as sensitive electrode, and production method and application thereof
  • CeO2-based mixed potential type acetone sensor with La0.8Sr0.2CoO3 as sensitive electrode, and production method and application thereof
  • CeO2-based mixed potential type acetone sensor with La0.8Sr0.2CoO3 as sensitive electrode, and production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of La by complexation with citric acid 0.8 Sr 0.2 CoO 3 material, the 800°C sintered La 0.8 Sr 0.2 CoO 3(800℃) Making CeO as a Sensitive Electrode Material 2 Based hybrid potentiometric acetone sensor, and test the gas sensing performance of the sensor, the specific process is as follows:

[0046] 1. Make a Pt reference electrode: CeO with a length and width of 2×2mm and a thickness of 0.2mm 2 Use Pt paste on one side of the upper surface of the substrate to make a layer of Pt reference electrode with a size of 0.5mm×2mm and a thickness of 15μm. At the same time, a Pt wire with a length of 1cm is folded in half, and the bend is glued to the middle of the reference electrode with Pt paste. lead out the electrode leads at the position; on the side opposite to the reference electrode, also fold a 1cm Pt wire in half, and stick it on the CeO 2 On the surface of the substrate, the electrode leads are drawn out; then the CeO 2 The substrate was baked under...

Embodiment 2

[0054] La sintered at 1000°C 0.8 Sr 0.2 COO 3 The material is used as a sensitive electrode material to make an acetone sensor, and the manufacturing process is as follows:

[0055] The La prepared by the aforementioned method 0.8 Sr 0.2 COO 3 Sintered at 1000 °C for 2 h in a muffle furnace to obtain the sensitive electrode material La 0.8 Sr 0.2 COO 3(1000℃) , the device manufacturing process is the same as in Example 1.

Embodiment 3

[0057] La sintered at 1200°C 0.8 Sr 0.2 COO 3 The material is used as a sensitive electrode material to make an acetone sensor, and the manufacturing process is as follows:

[0058] The La prepared by the aforementioned method 0.8 Sr 0.2 COO 3 Sintered at 1200 °C for 2 h in a muffle furnace to obtain the sensitive electrode material La 0.8 Sr 0.2 COO 3(1200℃) , the device manufacturing process is the same as in Example 1.

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Abstract

The invention relates to a CeO2-based mixed potential type acetone sensor with La0.8Sr0.2CoO3 as a sensitive electrode, and a production method thereof. The sensor is mainly used for detecting atmosphere environment and diabetes. The sensor is sequentially composed of an Al2O3 ceramic plate with a Pt heating electrode, a CeO2 substrate, a Pt reference electrode and the La0.8Sr0.2CoO3 sensitive electrode. The reference electrode and the sensitive electrode stand apart, and are symmetrically made at two sides of the upper surface of the CeO2 substrate, and the lower surface of the CeO2 substrate is bonded to the Al2O3 ceramic plate with the Pt heating electrode. A novel high-conductivity solid electrolyte material CeO2 is used as an ion conducting layer, and La0.8Sr0.2CoO3 with high electrochemical catalysis activity is used as the sensitive electrode, so the microscopic morphology of the sensitive electrode layer is changed at different calcining temperatures (800-1200 DEG C) in order to improve the sensitive characteristic.

Description

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Claims

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Application Information

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Owner JILIN UNIV
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