US Government As Represented by the Secretary of the Army

University System of Maryland

Georgia Tech Research Corporation

Sila Nanotechnologies, Inc.

Oleg A Borodin

Kang Xu

Chunsheng Wang

Arthur Von Wald Cresce

Liumin Suo

Gleb Yushin

Kostiantyn Turcheniuk

Naoki Nitta

Yiran Xiao

Marshall A Schroeder

Lin Ma

Travis P Pollard

Ah-Young Song

To improve the performance of certain multivalent metal electrodes, the electrodes can be treated prior to use in an electrochemical cell by applying a solution comprising an acid to a surface of a multivalent metal electrode, then removing excess solution comprising the acid and drying the surface of the multivalent metal electrode. The resulting electrode has an outer interphase layer comprised of a hydrated hydroxychloride comprising the multivalent metal, where the interphase layer has a thickness of less than 5 μm.

Hydrochloric acidic surface treatment for multivalent battery metal electrode

The present invention is directed to aqueous and hybrid aqueous electrolytes that comprise a lithium salt. The present invention is also directed to methods of making the electrolytes and methods of using the electrolytes in batteries and other electrochemical technologies.

Aqueous and hybrid electrolytes with wide electrochemical stability windows

In an embodiment, a metal or metal-ion battery cell, includes anode and cathode electrodes, a separator electrically separating the anode and the cathode, and a solid electrolyte ionically coupling the anode and the cathode, wherein the solid electrolyte comprises a material having one or more rearrangeable chalcogen-metal-hydrogen groups that are configured to transport at least one metal-ion or metal-ion mixture through the solid electrolyte, wherein the solid electrolyte exhibits a melting point below about 350&#xb0; C. In an example, the solid electrolyte may be produced by mixing different dry metal-ion compositions together, arranging the mixture inside of a mold, and heating the mixture while arranged inside of the mold at least to a melting point (e.g., below about 350&#xb0; C.) of the mixture so as to produce a material comprising one or more rearrangeable chalcogen-metal-hydrogen groups.

Solid electrolyte technology with rearrangeable bonds for metal and metal-ion batteries

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Laurel, MD, United States of America

Oleg A Borodin