Catalyst powder, catalyst electrode, and electrochemical device

Details Catalyst powder, catalyst electrode, and electrochemical device Catalyst powder, catalyst electrode, and electrochemical device

2004-04-07

2008-12-09

Lorengo, Jerry (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

C502S101000, C429S047000, C429S047000, C429S047000, C429S047000, C429S047000

Reexamination Certificate

active

07462575

ABSTRACT:
Disclosed is a catalyst powder contained in an electrode, wherein the catalyst powder includes a catalytic substance supported on a conductive powder, the catalytic substance being comprised of at least a catalyst, the weight ratio of the catalytic substance to the catalyst powder is in the range of 55 to 75 wt %, and the areal density of the catalytic substance is in the range of 1 to 3 mg/cm2. Also disclosed is a catalyst electrode including a catalyst powder and a solid polymer electrolyte, the catalyst powder including a catalytic substance supported on a conductive powder, the catalytic substance being comprised of at least a catalyst, wherein the weight ratio of the catalytic substance to the catalyst powder is in the range of 55 to 75 wt %, and the areal density of the catalytic substance in the catalyst powder is in the range of 1 to 3 mg/cm2. Further disclosed is an electrochemical device including a plurality of electrodes, and an ionic conductor sandwiched between the electrodes, wherein the above-mentioned catalyst electrode constitutes at least one of the plurality of electrodes.

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