Moltech Corporation

Leonid I Boguslavsky

Terje A Skotheim

Alexander Gorkovenko

Shyama P Mukherjee

Zhe-Sheng Xu

Zhongyi Deng

Yuriy V Mikhaylik

Alexei B Gavrilov

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 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.

Cathodes comprising electroactive sulfur materials and secondary batteries using same

Provided is a nonaqueous electrolyte element for use in secondary battery cells which comprises an effective lithium stripping enhancing amount of one or more soluble materials, such as a lithium polysulfide, which increases the lithium stripping efficiency. Also provided is a secondary lithium battery cell comprising said nonaqueous electrolyte element. Such a nonaqueous electrolyte element can be advantageously used in the manufacture of secondary electric-current producing cell elements, and provides many advantages in achieving extended cycle life and increased safety of secondary lithium batteries.

Composition useful in electrolytes of secondary battery cells

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Tucson, AZ, United States of America

Leonid I Boguslavsky