Moltech Corporation

Zhe-Sheng Xu

Terje A Skotheim

Alexander Gorkovenko

Shyama P Mukherjee

Zhongyi Deng

Leonid I Boguslavsky

Yordan M Gernov

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, &#x2014;S&#x2014;, wherein m is an integer from 3 to 10; and (b) a non-electroactive particulate material having a strong adsorption of soluble polysulfides. The present invention also pertains to electric current producing cells comprising such solid composite cathodes, and methods of making such solid composite cathodes and electric current producing cells.

Cathodes comprising electroactive sulfur materials and secondary batteries using same

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, &mdash;S &mdash;, wherein m is an integer from 3 to 10; and (b) a non-electroactive particulate material having a strong adsorption of soluble polysulfides. The present invention also pertains to electric current producing cells comprising such solid composite cathodes, and methods of making such solid composite cathodes and electric current producing cells.

Method of forming cathodes comprising electroactive sulfur materials

The present invention pertains to methods of forming solid composite cathodes with cathode active layers which comprise an electroactive sulfur-containing material and an electrically conductive material, wherein the electroactive sulfur-containing material is heated to a temperature above its melting point to form a melt layer and then is resolidified to form a cathode active layer having redistributed electroactive sulfur-containing material of high volumetric density and improved adhesion and cohesion. The present invention also pertains to methods of forming electric current producing cells comprising such solid composite cathodes and having a high electrochemical utilization and to solid composite cathodes and electric current producing cells formed using such methods.

Electrochemical cells with high volumetric density of electroactive sulfur-containing materials in cathode active layers

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, &mdash;S,&mdash;, wherein m is an integer from 3 to 10; and (b) a non-electroactive particulate non-fibrous material having a strong adsorption of soluble polysulfides. The present invention also pertains to electric current producing cells comprising such solid composite cathodes, and methods of making such solid composite cathodes and electric current producing cells.

The present invention pertains to solid composite cathodes which comprise (a) an electroactive sulfur-containing cathode material which, in its oxidized state, comprises a polysulfide moiety of the formula, -S,-, wherein m is an integer from 3 to 10; and (b) non-activated carbon nanofibers. The present invention also pertains to electric current producing cells comprising such solid composite cathodes, and methods of making such solid composite cathodes and electric current producing cells.

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Tucson, AZ, United States of America

Zhe-Sheng Xu