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AssigneeThe United States of America as represented by the United States Energy Research and Development Administration
InventorsDonald R. Vissers, Paul A. Nelson, Thomas D. Kaun, Zygmunt Tomczuk
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Particles of carbonaceous matrices containing embedded electrode active material are prepared for vibratory loading within a porous electrically conductive substrate. In preparing the particles, active materials such as metal chalcogenides, solid alloys of alkali or alkaline earth metals along with other metals and their oxides in powdered or particulate form are blended with a thermosetting resin and particles of a volatile to form a paste mixture. The paste is heated to a temperature at which the volatile transforms into vapor to impart porosity at about the same time as the resin begins to cure into a rigid, solid structure.The solid structure is then comminuted into porous, carbonaceous particles with the embedded active material.
In a method of preparing an electrode for use in a secondary electrochemical cell wherein solid particulate active material selected from the group of transition metal sulfides consisting of sulfides of iron, cobalt, nickel and copper is vibratorily loaded into an electrically conductive, foamed-solid substrate, the improvement in controlling the loading of said substrate comprising blending said particulate active material with thermosetting carbonaceous material and solid volatile to form a paste;
Dependencies are inferred from the claim text.