Amperometric hydrogen sensor based on pyrrolidinium hydrogen sulfate under anaerobic conditions

Wang, Rui; Wu, Pinghui; Zhi, Zinan; Gao, Wanshuo; Hua, Zhongqiu

doi:10.1016/j.cjac.2022.100065

Cited by 2 publications

(6 citation statements)

References 14 publications

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“…In our previous work, the large porosity of the porous ceramic was used as the substrate and the Pt SPE has a rough surface, , which results in a small three-phase interfacial area between the smooth solid polymer electrolyte membrane and WE. The Pt electrode layer with a thickness of 10 μm was formed, which led to a waste of precious metal.…”

Section: Results and Discussionmentioning

confidence: 99%

Amperometric Hydrogen Sensor Based on Solid Polymer Electrolyte and Titanium Foam Electrode

et al. 2022

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Trace hydrogen detection plays an important role in the safety detection of lithium-ion batteries (LIBs) due to the generation and leakage of trace hydrogen in the early stage of LIBs damage. In this work, an amperometric hydrogen sensor based on solid polymer electrolyte was reported. The sandwich device structure was realized, which could directly diffuse the gas from both sides to the three-phase interface (gas/electrode/electrolyte) to participate in the reaction through the optimal design of the gas diffusion path. Then, platinum nanoparticles (Pt-NPs) were loaded on the metal foam by electroplating, and the porous electrode was filled with solid polymer electrolyte. A sensor with high specific surface area, high catalytic activity, and high sensitivity was obtained. Finally, the hydrogen oxidation reaction (HOR) mechanism of the platinum-loaded (Pt-loaded) titanium foam (Ti foam) electrode under both anaerobic and aerobic conditions was verified, and the properties of the sensor was evaluated. The hydrogen sensor with a “sandwich” structure has the advantages of high sensitivity, good stability, low detection limit and low cost, which provides a technical solution for the safety and real-time monitoring of LIBs.

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Section: Results and Discussionmentioning

confidence: 99%

Amperometric Hydrogen Sensor Based on Solid Polymer Electrolyte and Titanium Foam Electrode

et al. 2022

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“…Considering these requirements and the current technological limitations, it is evident that there is an urgent need for new methods of monitoring H 2 gas in oxygen-free environments, which is a new avenue in the field of gas sensors. Until now, several types of H 2 sensors have been developed and operate successfully in oxygen-free environments, such as chemiresistive-based, [6][7][8][9][10][11][12][13][14][15] Schottky diodebased, [16][17][18][19][20][21][22] electrochemical-based, [22][23][24][25] acoustic-based [26][27][28][29] and optical-based, [4,[30][31][32][33] , as demonstrated in Fig. 1.…”

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confidence: 99%

“…Hua et al reported amperometric electrochemical H 2 sensors that consist of a solid polymer electrolyte and either a carbon-modified Pt/C/Nafion film or a Pt-loaded Ti foam as the working electrode. [22,24] The mechanism involved can be expressed by the following reactions (Equations 4-6):…”

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confidence: 99%

“…H 2 is adsorbed on the Pt surface to form Pt-H, which then gets oxidized into a hydrogen radical Pt-H • and a proton H + . In the case of the sensor based on carbon-modified Pt/C/Nafion film, the sensitivity reaches 0.15 nA ppm -1 , the LOD is about 40 ppm, and the response time is about 115 s. [22] However, the electrochemical H 2 sensors require a specific electrolyte and exhibit relatively poor selectivity and temperature-dependent response.…”

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confidence: 99%

“…1 Progress in H 2 sensors operating in oxygen-free environments. [1,7,21,22,26,30] the Kröger-Vink notation as follow:…”

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confidence: 99%

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Hydrogen sensors operated in oxygen-free environments

2023

MatLab

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Hydrogen (H2) is considered a next-generation clean energy source for replacing fossil fuels, and detecting H2 leaks is crucial from a safety standpoint. As the application of H2 energy becomes increasingly diverse and complex, there is a growing need to detect H2 leaks in oxygen-free environments. However, conventional oxygen-dependent H2 sensors lose their ability to detect gas in such environments. This work briefly outlines the research progress toward developing H2 sensors that can operate in oxygen-free environments, including the sensing materials, sensor device structures, gas sensing properties and mechanisms. Finally, we present some perspectives for the future development of H2 sensors for use in oxygen-free environments.

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Amperometric hydrogen sensor based on pyrrolidinium hydrogen sulfate under anaerobic conditions

Cited by 2 publications

References 14 publications

Amperometric Hydrogen Sensor Based on Solid Polymer Electrolyte and Titanium Foam Electrode

Amperometric Hydrogen Sensor Based on Solid Polymer Electrolyte and Titanium Foam Electrode

Hydrogen sensors operated in oxygen-free environments

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