Improved Nafion-based amperometric sensor for hydrogen in argon

Binary platinum–ruthenium/Nafion electrodes for the detection of hydrogen

“…Further, they noted that both CO and CO 2 could cause catalytic electrode poisoning; to ameliorate this, they added a Pd-diffusion barrier on top of the sensing Pt electrode [14]. Fuel-cell-based hydrogen sensors with Nafion electrolytes and Pd or Pt anodes were investigated by Ramesh et al [15,16]. They concluded that at low concentrations of hydrogen, from 5 to 25 ppm, the Pd anode was the preferred catalyst compared to Pt on the sensing side.…”

“…As various applications of hydrogen emerge, hydrogen sensors play an important role in safety because volumetric concentrations of hydrogen can explode when they reach 4% or higher [5]. In this regard, electrochemical hydrogen sensors, including amperometric, potentiometric, and conductometric devices, can offer good analytical performance with minimal power consumption [6][7][8][9][10][11][12][13][14][15][16]. The present research was centered on the development of a new amperometric hydrogen sensor.…”

“…Several amperometric hydrogen sensors have been explored in the literature [9][10][11][12][13][14][15][16]. Hwang et al [9][10][11] prepared Pt/Nafion electrodes by three methods: Takenaka-Torikai (T-T), impregnation reduction (I-R), and a hot-press method.…”

Enhanced proton-transfer activity in imidazole@MIL-53(Al) systems revealed by molecular-dynamics simulations

“…Besides biochemical activities [1], proton-transport processes are basic principles in, e.g., sensors [2,3] and fuel-cell applications [4]. In most cases, the transport process is water-based as in a biochemical environment and can be described by the Grotthuss mechanism [5,6].…”

Sensing Behavior of Room Temperature Amperometric H2Sensor with Pd Electrodeposited from Ionic Liquid Electrolyte as Sensing Electrode

“…16 They found that hot-pressed method gives better sensitivity than T-T and I-R method. C. Ramesh et al 17,18 used z E-mail: sas@igcar.gov.in decal transfer method and also placed a diffusion barrier at the sensing side to avoid the poisoning effect of CO. The sensing characteristics of previously reported sensors are given in Table I.…”