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:
Sep. 24, 1985
Filed:
Jul. 06, 1984
ELTECH Systems Corporation, Boca Raton, FL (US);
Abstract
A method of making a catalytic lead-based oxygen-evolving anode comprises catalytically activating titanium sponge particles larger than 300 microns by impregnating with a solution containing Mn and Ru compounds, in amounts corresponding to Mn/Ru in an atomic ratio between 70/30 and 90/10, and thermally converting the compounds to an electrocatalyst comprising Mn and Ru in oxide form. Catalytic Ti sponge particles with up to 3 wt % Ru are thus produced, which are then uniformly distributed on the surface of a lead anode base in an amount greater than 400 g/m.sup.2, pressed, and partly embedded, thereby firmly anchoring and electrically connecting them to the lead anode base. The catalytic lead-based anode thus produced operates with oxygen evolution on the catalytic particles at a reduced potential at which the lead base remains electrochemically inactive. It thereby operates with significant energy savings over an extended service life.