초록 ▼

A composite electrode having a structural electrode member with at least a portion of one surface of the electrode member constructed from a continuous matrix of an anodically passivatable metal infiltrated by a metal capable of forming an electroconductive oxide and having the infiltrating metal at

A composite electrode having a structural electrode member with at least a portion of one surface of the electrode member constructed from a continuous matrix of an anodically passivatable metal infiltrated by a metal capable of forming an electroconductive oxide and having the infiltrating metal at the electrode surface oxidized such that an electric current path is provided through the oxidized surface of the matrix metal. In one embodiment the matrix metal is an electrochemical valve metal, e.g., titanium and the infiltrating metal is lead. Applications for the composite electrode include battery grids and electrochemical processing electrodes.

대표청구항 ▼

An article of manufacture, adapted to be used with an electrolyte such that when in use at least part of one surface of said article is exposed to said electrolyte and, at least part of the time, is at an oxidizing potential comprising, at least adjacent said at least part of one surface, a matrix o

An article of manufacture, adapted to be used with an electrolyte such that when in use at least part of one surface of said article is exposed to said electrolyte and, at least part of the time, is at an oxidizing potential comprising, at least adjacent said at least part of one surface, a matrix of a metal anodically passivated in said electrolyte at said oxidizing potential containing a maze of tortuous paths essentially filled adjacent said at least part of one surface with an electroconductive oxide essentially insoluble in said electrolyte and the remainder of said maze paths of said maze is filled with metal in direct contact with said electroconductive oxide, said oxide being confined by the walls of said paths, essentially blocking entry of said electrolyte to the interior of said matrix thereby maintaining the electrolyte-article interface at the external surface of the article and providing a means of electrical conductivity at said oxidizing potential between said electrolyte and the interior of said article.