Low catalyst loaded ethanol gas fuel cell sensor

Modjtahedi, Ali; Amirfazli, Amir; Farhad, Siamak

doi:10.1016/j.snb.2016.04.108

Cited by 37 publications

(20 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While Pt supported carbon does show good performance compared to Pt-black, 1,13 Pt-black was used here to mimic the electrode of the commercial material. The ink was mixed thoroughly for several hours and spray deposited onto a gas diffusion layer (Toray TPGH-090, 10% wet-proofing) using an airbrush.…”

Section: Methodsmentioning

confidence: 99%

Polyvinyl Chloride Composite Membranes Made with Nafion and Polysiloxanes for Use in Electrochemical Breath Alcohol Sensors

Allan

Easton

2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

Two polyvinyl chloride (PVC) composites were synthesized and tested for their performance in an electrochemical ethanol sensor device. A PVC-Nafion composite was synthesized by imbuing a porous freestanding PVC membrane with a Nafion solution and allowing the Nafion to cast within the PVC. A PVC-sulfonated silica composited was also synthesized by first allowing a solgel reaction to take place between tetraethylorthosilicate (TEOS) and 3-(trihydroxysilyl)-1-propanesulfonic acid (TPS). A PVC membrane was then imbued with this solution and the sol-gel reaction was allowed to finish within the PVC membrane. The membranes were characterized with FTIR and TGA to confirm the presence of the additives to the PVC membrane. The PVC-Nafion composite was found to show extremely poor performance in a sensor role, due to the Nafion blocking the pores to allow for adequate ionic transport within the PVC film. The PVC-sulfonated silica showed comparable performance to the freestanding PVC, but using 75% less water to achieve the similar results. This has the advantage of being less prone to leaching and flooding, which has significant advantages in a sensor application role. Polyvinyl chloride (PVC) is widely used in industry, and has found a use as a proton exchange membrane (PEM) for fuel cell devices. 1,2Specifically, PVC is used as the membrane of choice for fuel cell breathalyzers, or breath alcohol sensors (BrAS). PVC is used for its durability, chemical robustness, cost and stiffness.3 The PVC used in these devices are of a porous free standing nature with 10 μm spheres and pores of the same diameter. While the PVC itself does not produce the ionic conductivity required for proton conduction, the porous film is usually filled with ca. 4 M H 2 SO 4 to impart ionic conductivity to the membrane.2 This creates a material that has superior ionic conductivity and water-uptake to the more commonly used Nafion membrane for power generating PEM fuel cells. A more detailed analysis of the PVC used in BrASs can be found in our previous studies. 1,2Our previous studies have highlighted that the hydration state of the membrane electrode assembly (MEA) can greatly affect the performance of these BrASs. 1,4 The hydration state of the MEA is mainly influenced by the relative humidity (RH) of the environment in which it is operated. Higher humidity conditions will reduce ionic resistance within the MEA, while lower RH conditions will increase ionic resistance.5 If the device is not calibrated for the humidity conditions it will operate in, the reliability and accuracy of the device will be greatly reduced.Improving water management and retention within the BrAS should reduce the performance variation caused by variable RH. We have recently demonstrated that chemical modification of the porous PVC will not only increase ionic conductivity, but also improve the overall uptake of water within the membrane.2 With a greater content of water within the membrane, performance in lower humidity is expected to increase.We have synthesized composi...

show abstract

Section: Methodsmentioning

confidence: 99%

Polyvinyl Chloride Composite Membranes Made with Nafion and Polysiloxanes for Use in Electrochemical Breath Alcohol Sensors

Allan

Easton

2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…17 Proton exchange membrane fuel cell (PEMFC) type gas sensors have been considered as one of the most promising gas detection equipment due to their low power consumption (in fact it has no need for external voltage and works at room temperature), low cost associated along with features such as portability, good linear signal and fast response. 18,19 In order to ensure practical benets of the PEMFC in the eld of gas sensing, the following problems of Pt/C electrode materials must be solved: (i) poor selectivity to target gas, (ii) low a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China. E-mail: ruansp@jlu.edu.cn b Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, China sensitivity and (iii) sensitivity dri during long-term operation.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous titanium niobium nitrides supported Pt nanoparticles for highly selective and sensitive formaldehyde sensing

Huang

Adimi

et al. 2021

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…Gas sensing detection technology is the core of dissolved gas analysis. Different types of sensing technologies have been reported in previous studies for detecting typical fault characteristic gases extracted from transformer oil, such as metal oxide semiconductor gas sensors (Zhu and Zeng, 2017a; Chen et al, 2018), catalytic combustion sensors (Liu et al, 2011), fuel cell sensors (Modjtahedi et al, 2016; Tonezzer et al, 2017), and optical sensors (Trieu-Vuong et al, 2016; Paliwal et al, 2017). Given the remarkable advantages of simple fabrication process, low maintenance cost, fast response and recovery, long service life, and so on, metal oxide semiconductor materials like SnO 2 (Choi et al, 2014; Zeng et al, 2014), ZnO (Zhou et al, 2017; Zhu and Zeng, 2017b; Zhu et al, 2017), TiO 2 (Zeng and Liu, 2010; Zhang et al, 2018b) and In 2 O 3 (Cao et al, 2015) have received scientific and technological importance for many years and are widely used to detect these gases.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances of SnO2-Based Sensors for Detecting Fault Characteristic Gases Extracted From Power Transformer Oil

Zhang

Zhou

et al. 2018

Front. Chem.

View full text Add to dashboard Cite

Tin oxide SnO2-based gas sensors have been widely used for detecting typical fault characteristic gases extracted from power transformer oil, namely, H2, CO, CO2, CH4, C2H2, C2H4, and C2H6, due to the remarkable advantages of high sensitivity, fast response, long-term stability, and so on. Herein, we present an overview of the recent significant improvement in fabrication and application of high performance SnO2-based sensors for detecting these fault characteristic gases. Promising materials for the sensitive and selective detection of each kind of fault characteristic gas have been identified. Meanwhile, the corresponding sensing mechanisms of SnO2-based gas sensors of these fault characteristic gases are comprehensively discussed. In the final section of this review, the major challenges and promising developments in this domain are also given.

show abstract

Low catalyst loaded ethanol gas fuel cell sensor

Cited by 37 publications

References 44 publications

Polyvinyl Chloride Composite Membranes Made with Nafion and Polysiloxanes for Use in Electrochemical Breath Alcohol Sensors

Polyvinyl Chloride Composite Membranes Made with Nafion and Polysiloxanes for Use in Electrochemical Breath Alcohol Sensors

Mesoporous titanium niobium nitrides supported Pt nanoparticles for highly selective and sensitive formaldehyde sensing

Recent Advances of SnO2-Based Sensors for Detecting Fault Characteristic Gases Extracted From Power Transformer Oil

Contact Info

Product

Resources

About