The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1994
Filed:
Oct. 30, 1992
V Roger Shepard, Jr, Mableton, GA (US);
Yardlyne G Smalley, Riverdale, GA (US);
R Dennis Bentz, Marietta, GA (US);
AER Energy Resources, Inc., Atlanta, GA (US);
Abstract
A bifunctional air-electrode for use in electrochemical energy cells discharges a satisfactory current on the first discharge cycle and operates for a relatively large number of charge-discharge cycles without gas forming between the electrolyte side of the air electrode and the electrolyte. The active layer of the electrode includes an oxygen reduction catalyst having a first oxygen evolution potential and an oxygen evolution catalyst having a second oxygen evolution potential less than the first oxygen evolution potential, the oxygen reduction catalyst being present in a greater concentration proximate the electrolyte side than proximate the air side and the oxygen evolution catalyst being present in a greater concentration proximate the air side than proximate the electrolyte side.