US 7,537,678 B2
Detecting electrode and nitrogen oxide sensor using the same
Nobuhito Imanaka, Kawanishi (Japan)
Assigned to Japan Science and Technology Agency, Saitama (Japan)
Appl. No. 10/512,307
PCT Filed Apr. 18, 2003, PCT No. PCT/JP03/05021
§ 371(c)(1), (2), (4) Date Oct. 25, 2004,
PCT Pub. No. WO03/091719, PCT Pub. Date Nov. 06, 2003.
Claims priority of application No. 2002-124946 (JP), filed on Apr. 25, 2002.
Prior Publication US 2005/0205423 A1, Sep. 22, 2005
Int. Cl. G01N 27/26 (2006.01)
U.S. Cl. 204—431  [204/421; 204/424; 204/426; 204/280; 204/290.01; 204/290.1; 205/775; 205/780.5; 205/781] 21 Claims
OG exemplary drawing
 
1. A nitrogen oxide sensor electrode, comprising: a solid solution of a nitrate or nitrite of an alkali metal; and an oxide of a rare-earth element.