Title :
Solid-state SOx sensor based on NASICON and metal sulfide electrode
Author :
Shimizu, Youichi ; Souda, Noriko ; Okimoto, Miho
Author_Institution :
Dept. of Appl. Chem., Kyushu Inst. of Technol., Fukuoka, Japan
Abstract :
All solid-state SOx sensor based on a sodium ionic conductor (Na5DySi4O12) disc and metal-sulfide electrodes synthesized via solution routes have been investigated for the detection of SO2 at 300-400°C. Among the sulfide sensing electrodes tested, Pb1-xCdxS (x = 0.1, 0.2) electrodes showed good SO2 sensitivity at 300-400°C. The sensor elements showed the best sensing characteristics, i.e., the EMF response was almost linear to the logarithm of SO2 concentration in the range between 40 and 400 ppm and also showed high selectivity to SO2 at 400°C.
Keywords :
electrochemical electrodes; electrochemical sensors; sodium compounds; solid electrolytes; sulphur compounds; 300 to 400 C; EMF response; Na5DySi4O12; SO2; metal sulfide electrode; metal-sulfide electrode; sensor element; sodium ionic conductor; solid electrolyte; solid-state sensor; sulfide sensing electrode; Argon; Chemical sensors; Conductivity; Electrodes; Gas detectors; Inorganic materials; Solid state circuits; Temperature sensors; Water heating; X-ray scattering;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on
Print_ISBN :
0-7803-8994-8
DOI :
10.1109/SENSOR.2005.1497474
