EP 0896668 A4 20000315 - SOLID-STATE GAS SENSOR
Title (en)
SOLID-STATE GAS SENSOR
Title (de)
FESTKÖRPERGASSENSOR
Title (fr)
DETECTEUR DE GAZ A L'ETAT SOLIDE
Publication
Application
Priority
- US 9706981 W 19970424
- US 64045196 A 19960430
Abstract (en)
[origin: WO9741428A1] A solid-state sensor (50) provides for sensitive detection of a selected gas in a gaseous mixture to output a signal useful for monitoring and control. The sensor has a solid-state oxide electrolyte (54), a first electrode (52) contacting the electrolyte for oxidizing or reducing the selected gas in the gaseous mixture at a first reaction rate, and a second electrode (56) contacting the electrolyte for reducing oxygen in the gaseous mixture at a second reaction rate. The difference in the first and second rates produces a measurable electrochemical potential across the electrolyte. The improvement in the sensor comprises the first electrode formed from a dense thin film of a mixed conductor suitable for catalyzing the oxidation or reduction of the selected gas. Suitable mixed conductor films are formed from perovskite-type and fluorite-type oxides with a thickness less than about 1 um.
IPC 1-7
IPC 8 full level
G01N 27/407 (2006.01)
CPC (source: EP)
G01N 27/4074 (2013.01)
Citation (search report)
- [Y] US 5393397 A 19950228 - FUKAYA TOMOJI [JP], et al
- [Y] US 4547281 A 19851015 - WANG DA Y [US], et al
- See references of WO 9741428A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9741428 A1 19971106; AU 2926197 A 19971119; BR 9709755 A 19990810; CA 2262755 A1 19971106; EP 0896668 A1 19990217; EP 0896668 A4 20000315
DOCDB simple family (application)
US 9706981 W 19970424; AU 2926197 A 19970424; BR 9709755 A 19970424; CA 2262755 A 19970424; EP 97923463 A 19970424