Response characteristics of a potentiometric CO2 gas sensor based on Li3PO4 solid electrolyte using Au film as the electrodes

2014 ◽  
Vol 115 (12) ◽  
pp. 124505 ◽  
Author(s):  
Guoliang Sun ◽  
Hairong Wang ◽  
Peng Li ◽  
Zhen Liu ◽  
Zhuangde Jiang
Keyword(s):  
Solid Electrolyte ◽  
Gas Sensor ◽  
Co2 Gas ◽  
Response Characteristics ◽  
Au Film ◽  
Co2 Gas Sensor

Micro CO2 Sensor Based on Li2CO3, Pt | Li3PO4 | Pt, Li2TiO3-TiO2 Structure

2010 ◽  
Vol 44-47 ◽  
pp. 2747-2751
Author(s):  
Hai Rong Wang ◽  
Jun Qiang Ren ◽  
Guo Liang Sun ◽  
Di Cen
Keyword(s):  
Solid Electrolyte ◽  
Gas Sensor ◽  
Experimental Results ◽  
Al2o3 Substrate ◽  
Reference Electrodes ◽  
Co2 Gas ◽  
Speed Of Response ◽  
Co2 Gas Sensor ◽  
Improved Performance ◽  
Mems Process

This paper presents a micro solid electrolyte CO2 gas sensor in which Li2CO3, Li2TiO3-TiO2 serves as sensing and reference electrodes respectively, and the Li3PO4 film acts as the electrolyte. The sensor was constructed in the sequent layers of O2, CO2, Li2CO3, Pt | Li3PO4 | Pt, Li2TiO3-TiO2, O2, CO2 on the Al2O3 substrate by MEMS process. Experimental results indicate that the micro solid-electrolyte CO2 gas sensor has a relatively rapid speed of response. By discussions, we may find that the improved performance will be realized by optimizing the primary parameters of the sensor.

Carbon Dioxide Gas Sensor Using SAW Device Based on ZnO Film

2011 ◽  
Vol 135-136 ◽  
pp. 347-352 ◽  
Author(s):  
Chang Bao Wen ◽  
Yong Feng Ju ◽  
Wan Lin Li ◽  
Wen Zheng Sun ◽  
Xin Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Sensor ◽  
Side Lobe ◽  
Center Frequency ◽  
Zno Film ◽  
Co2 Gas ◽  
Response Characteristics ◽  
Carbon Dioxide Gas ◽  
Co2 Gas Sensor ◽  
Carbon Dioxide Co2

Carbon dioxide (CO2) gas sensor using surface acoustic wave (SAW) device based on Zinc oxide (ZnO) was developed and fabricated in this paper. The center frequency of SAW device is 203.528 MHz. The input and two output interdigital transducers (IDT) apodized by Morlet wavelet function can improve the side lobe rejection compared with uniform IDT. The ZnO film sensitive to CO2 gas was fabricated in measurement acoustic track of SAW device. Experiments results confirm that the CO2 gas sensor using SAW device based on ZnO film has good response characteristics to different concentrations CO2 gas. Furthermore, the CO2 gas sensor using SAW device based on ZnO film has good stability and linearity.

A solid electrolyte potentiometric CO2 gas sensor composed of lithium phosphate as both the reference and the solid electrolyte materials

2012 ◽  
Vol 61 (6) ◽  
pp. 938-941 ◽  
Author(s):  
Hyung-Kun Lee ◽  
Nak-Jin Choi ◽  
Seung Eon Moon ◽  
Woo Seok Yang ◽  
Jongdae Kim
Keyword(s):  
Solid Electrolyte ◽  
Gas Sensor ◽  
Co2 Gas ◽  
Lithium Phosphate ◽  
Co2 Gas Sensor

The Operating Temperature Lowering for CO2 Gas Sensor with a Lithium Conducting Solid Electrolyte.

1992 ◽  
pp. 103-106 ◽  
Author(s):  
Nobuhito Imanaka ◽  
Toshihide Murata ◽  
Takeshi Kawasato ◽  
Gin-ya Adachi
Keyword(s):  
Solid Electrolyte ◽  
Gas Sensor ◽  
Operating Temperature ◽  
Co2 Gas ◽  
Co2 Gas Sensor

scholarly journals A Highly Sensitive Room Temperature CO2 Gas Sensor Based on SnO2-rGO Hybrid Composite

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 522
Author(s):  
Zhi Yan Lee ◽  
Huzein Fahmi bin Hawari ◽  
Gunawan Witjaksono bin Djaswadi ◽  
Kamarulzaman Kamarudin
Keyword(s):  
Electron Microscopy ◽  
Carbon Dioxide ◽  
Gas Sensor ◽  
Photoelectron Spectroscopy ◽  
Hybrid Composite ◽  
Room Temperature ◽  
Co2 Gas ◽  
X Ray ◽  
Wide Range ◽  
Co2 Gas Sensor

A tin oxide (SnO2) and reduced graphene oxide (rGO) hybrid composite gas sensor for high-performance carbon dioxide (CO2) gas detection at room temperature was studied. Since it can be used independently from a heater, it emerges as a promising candidate for reducing the complexity of device circuitry, packaging size, and fabrication cost; furthermore, it favors integration into portable devices with a low energy density battery. In this study, SnO2-rGO was prepared via an in-situ chemical reduction route. Dedicated material characterization techniques including field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) were conducted. The gas sensor based on the synthesized hybrid composite was successfully tested over a wide range of carbon dioxide concentrations where it exhibited excellent response magnitudes, good linearity, and low detection limit. The synergistic effect can explain the obtained hybrid gas sensor’s prominent sensing properties between SnO2 and rGO that provide excellent charge transport capability and an abundance of sensing sites.

scholarly journals Enhanced Characteristics of Nondispersive Infrared CO2 Gas Sensor by Deposition of Hydrophobic Thin Film

Proceedings ◽  
2017 ◽  
Vol 1 (4) ◽  
pp. 410 ◽  
Author(s):  
Jinho Kim ◽  
Jayoung Lee ◽  
Keunheon Lee ◽  
Seunghwan Yi
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Co2 Gas ◽  
Co2 Gas Sensor

scholarly journals Double Notched Long-Period Fiber Grating Characterization for CO2 Gas Sensing Applications †

Sensors ◽  
2018 ◽  
Vol 18 (10) ◽  
pp. 3206 ◽  
Author(s):  
Hsiang-Chang Hsu ◽  
Tso-Sheng Hsieh ◽  
Tzu-Hsuan Huang ◽  
Liren Tsai ◽  
Chia-Chin Chiang
Keyword(s):  
Gas Sensor ◽  
Transmission Loss ◽  
Gas Sensing ◽  
Fiber Grating ◽  
Co2 Gas ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Sensing Applications ◽  
Co2 Gas Sensor ◽  
Period Fiber Grating

In this study, we applied a double-sided inductively coupled plasma (ICP) process to nanostructure long-period fiber grating (LPFG) in order to fabricate a double-notched LPFG (DNLPFG) sensor with a double-sided surface corrugated periodic grating. Using the sol-gel method, we also added thymol blue and ZnO to form a gas sensing layer, thus producing a DNLPFG CO2 gas sensor. The resulting sensor is the first double-sided etching sensor used to measure CO2. The experimental results showed that as the CO2 concentration increased, the transmission loss increased, and that the smaller the fiber diameter, the greater the sensitivity and the greater the change in transmission loss. When the diameter of the fiber was 32 μm (and the period was 570 μm) and the perfusion rate of CO2 gas was 15%, the maximum loss variation of up to 3.881 dB was achieved, while the sensitivity was 0.2146 dB/% and the linearity was 0.992. These results demonstrate that the DNLPG CO2 gas sensor is highly sensitive.

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