South Dakota Board of Regents

Alevtina Smirnova

Praveen Kolla

Joel Swanson

Matthew Dondelinger

Abu Md Numan-Al-Mobin

Michael McGraw

Chris Lynde

Rudresh Bommadihalli Rajappagowda

The present disclosure relates to mixed ionically and electronically conducting solid-state phases for their application in electrochemical devices, such as lithium-metal or lithium ion batteries. The solid-state mixed phase comprises of active cathode and carbon-based structures functionalized by a heteropolyacid (HPA) or a metal salt of a heteropolyacid (Me-HPA) to form a solid-state architecture with incorporated ceramic or glass-ceramic electrolyte for enhanced ionic and electronic conductivity pathways. Combining the solid-state phase components in melted solid-state electrolyte results in perfect distribution, improved adhesion between particles, and improved characteristics of the electrochemical device, such as high charge rates, long-term performance, and broad voltage window.

Cathode structure functionalization with polyoxometalates in contact with solid-state electrolyte for improved all-solid-state lithium-ion battery performance

The present invention relates to a one-step process for preparation of 'in-situ' or “ex-situ” self-organized and electrically conducting polymer nanocomposites using thermally initiated polymerization of a halogenated 3,4-ethylenedioxythiophene monomer or its derivatives. This approach does not require additional polymerization initiators or catalysts, produce gaseous products that are naturally removed without affecting the polymer matrix, and do not leave by-product contaminants. It is demonstrated that self-polymerization of halogenated 3,4-ethylenedioxythiophene monomer is not affected by the presence of a solid-state phase in the form of nanoparticles and results in formation of 3,4-polyethylenedioxythiophene (PEDOT) nanocomposites.

Self-organized and electrically conducting PEDOT polymer matrix for applications in sensors and energy generation and storage

The present disclosure relates to a manufacturing process of the solid-state glass-ceramic electrolytes, known in the art as antiperovskites. Specifically, the disclosure is focused on manufacturing of the solid-state electrolyte from the corresponding precursors directly on the active electrode surface of an electrochemical device, specifically anode or cathode of the lithium-ion or lithium metal batteries.

Solid-state electrolytes based on lithium halides for all-solid-state lithium-ion battery operating at elevated temperatures

The present invention relates to a one-step process for preparation of 'in-situ' or 'ex-situ' self-organized and electrically conducting polymer nanocomposites using thermally initiated polymerization of a halogenated 3,4-ethylenedioxythiophene monomer or its derivatives. This approach does not require additional polymerization initiators or catalysts, produce gaseous products that are naturally removed without affecting the polymer matrix, and do not leave by-product contaminants. It is demonstrated that self-polymerization of halogenated 3,4-ethylenedioxythiophene monomer is not affected by the presence of a solid-state phase in the form of nanoparticles and results in formation of 3,4-polyethylenedioxythiophene (PEDOT) nanocomposites.

Solid-state lithium-ion batteries with a solid-state antiperovskite electrolyte are disclosed. In one aspect, a solid-state LiClO electrolyte is deposited on a Cu-supported thin carbon working electrode using a delamination approach for half-cells with lithium metal as a reference electrode.

Disclosed herein are methods for selective synthesis of specific phenolic products by means biomass or biomass products liquefaction, manipulation of the said selectivity in favor of one specific phenolic compound or a mixture of specific phenolic compounds, and the synthesis of the phenolic compounds from a liquid or biomass organic fraction produced in presence of a homogeneous catalyst in supercritical state or a mixture of said homogeneous and one or several heterogeneous catalysts mixed with water in sub-critical, near-critical, or supercritical condition.

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Rapid City, SD, United States of America

Alevtina Smirnova