Title :
Performance of solid polymer electrolyte based oxygen sensor without external humidification
Author :
Gopalakrishna, Jayashri ; Wlodarski, Wojtek ; Iles, Peter
Author_Institution :
Dept. of Commun. & Electron. Eng., R. Melbourne Inst. of Technol., Vic., Australia
Abstract :
The Solid Polymer Electrolyte (SPE) based electrochemical oxygen sensor is reported in this paper. The oxygen sensor consists of three porous C/Pt based Gas Diffusion Electrodes (GDE) namely, working, reference and counter. The performance of the sensor is tested without external humidification of the test gases. In order to achieve internal humidification of the Nafion membrane, the oxygen reduction principle and back diffusion of water, is utilised. The sensor responds to oxygen concentrations from 10 ppm to 20%
Keywords :
carbon; diffusion; electrochemical electrodes; electrochemical sensors; gas sensors; membranes; oxygen; platinum; polymer electrolytes; porous materials; reduction (chemical); solid electrolytes; C-Pt; Nafion membrane; O2; back diffusion; counter electrode; electrochemical oxygen sensor; internal humidification; oxygen reduction principle; porous C/Pt based gas diffusion electrodes; reference electrode; solid polymer electrolyte based oxygen sensor; working electrode; Biomembranes; Chemical sensors; Chemical technology; Electrodes; Oxygen; Polymers; Sensor phenomena and characterization; Solids; Temperature sensors; Testing;
Conference_Titel :
Optoelectronic and Microelectronic Materials Devices, 1998. Proceedings. 1998 Conference on
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-4513-4
DOI :
10.1109/COMMAD.1998.791667
