An electrochemical Nafion� matrix oxygen sensor and the evaluation of oxygen permeation in coated films

Prospects of practical application of hybrid membranes

“…Kuwata et al [124] proposed an amperometric sensor composed of an electrochemical cell based on a Nafion membrane and a system of generation and supply of hydrogen. Later, more convenient-to-use and compact Nafion-based potentiometric and amperometric sensors for the determination of oxygen, hydrogen, and water were developed [125][126][127]. High conductivity provides the room-temperature operation of sensors based on Nafion membranes, while electrochemical durability is responsible for long-term stability and reproducibility of data.…”

Characteristics of Solid-State Amperometric Oxygen Sensor Using Pt/C Film Hot-Pressed onto Nafion Membrane

“…After aging, the sensitivity of the Pt=C=Nafion electrode decreases by 81%. Table 1 demonstrates the comparison of sensing performances of various Pt-modified Nafion electrodes shown in the literature [4,26,27,30,31] and in this work. It is obvious that Nafion metalized by hot-pressing the Pt=C film onto it in this study, detects oxygen more sensitively than Nafion metalized by a sputtering method and chemical reduction methods, including the …”

“…Detecting the safe oxygen concentration in a working environment and controlling the oil-gas ration in an engine, encourage the development of excellent oxygen sensors [27,28]. Therefore, this article presents a new amperometric oxygen sensor using a Pt=C=Nafion composite electrode prepared by mechanically hotpressing Pt=C films onto one side of Nafion.…”

CO-sensing Properties of Potentiometric Gas Sensors Using an Anion-conducting Polymer Electrolyte and Au-loaded Metal Oxide Electrodes

“…For example, Matsumoto et al have reported that the PEFCs using an ACP electrolyte showed high current density as well as high power density with relatively low overpotential [6], and their properties except for the long-term stability have been already comparable to those of PEFCs using proton-conducting polymers such as Nafion ® , which has been put into practical use. On the other hand, it is well-known that various electrochemical gas sensors using the Nafion ® as an electrolyte have also been developed and their sensing properties to some gases were really excellent even at RT [7][8][9][10][11][12], but to data electrochemical gas sensors using an ACP electrolyte have been rarely reported [13][14][15]. We have already reported that potentiometric gas sensors employing an ACP electrolyte and Pt-or Pd-loaded carbon black (CB) electrodes showed relatively large responses to CO 2 [16] or H 2 [17], respectively.…”