Related Experiment Video
Updated: Jul 23, 2026
12:47
Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
Published on: May 2, 2014
21.8K
Hydrogen Sensor Based on NTC Thermistor with Pt-Loaded WO3/SiO2 Coating
Changwei Sun1,2, Ben Xu2, Ping Li2
1School of Electronic and Electrical Engineering, Bengbu University, Bengbu 233030, China.
Micromachines
|December 23, 2022
Summary
A new hydrogen sensor uses a thermistor with a special coating. This sensor detects hydrogen gas by measuring changes in electrical resistance, offering fast and accurate results.
Area of Science:
- Materials Science
- Chemical Engineering
- Sensor Technology
Background:
- Accurate hydrogen detection is critical for safety and industrial processes.
- Existing hydrogen sensors can be limited by sensitivity, response time, or cost.
Purpose of the Study:
- To develop and demonstrate a novel hydrogen sensor with enhanced performance.
- To utilize a negative temperature coefficient (NTC) thermistor with a catalytic coating for hydrogen detection.
Main Methods:
- Fabrication of a thermistor coated with platinum-loaded tungsten oxide/silicon dioxide (Pt-loaded WO3/SiO2).
- Experimental validation of the sensor's response to hydrogen gas in a series circuit.
- Monitoring voltage changes across the NTC thermistor to quantify hydrogen concentration.
Main Results:
- The sensor exhibited a rapid response time and high sensitivity to hydrogen.
- Excellent repeatability and immunity to humidity were observed.
- The device demonstrated a low manufacturing cost and ease of use.
Conclusions:
- The Pt-loaded WO3/SiO2 coated NTC thermistor is a promising platform for effective hydrogen sensing.
- The sensor's performance characteristics make it suitable for various practical applications.
- This novel approach offers a cost-effective and user-friendly solution for hydrogen monitoring.
