H - Electricity – 01 – M
Patent
H - Electricity
01
M
204/197, 319/23,
H01M 12/06 (2006.01) C25B 11/04 (2006.01) C25C 7/02 (2006.01) H01M 4/90 (2006.01) H01M 12/08 (2006.01)
Patent
CA 1108227
ABSTRACT OF THE DISCLOSURE An electrochemical device is described which has an oxygen electrode which contains a pyrochlore type electrocatalyst material. This electrocatalystmaterial is one or more electrically conductive pyrochlore compounds selected from the compounds of the following formula: A2B2O7-y (1) wherein A is any of the known pyrochlore structure metal cations, B is a pyrochlore structure metal cation at least a major portion of which is selected from the group consisting of one or more of Ru, Rh, Ir, Os, Pt, Ru-Pb mixtures and Ir-Pb mixtures, and wherein 0 y 1Ø Desirably, A is a pyrochlore structure metal cation at least a major portion of which is selected from the group consisting of one or more of Pb, Bi and Tl. A preferred group of pyrochlore compounds which are included in the above formula are those having the following formula: Pb2[M2-xPbx]O7-y (2) wherein M is selected from the group consisting of Ru and Ir, wherein 0 x 1.2 and 0 y 1Ø
314749
Haberman Joel I.
Horowitz Harold S.
Longo John M.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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