United States Gypsum Company

University of Utah Research Foundation

Xuming Wang

Paul W Reed

Qingxia Liu

Qiang Yu

Jan D Miller

Michael Patrick Shake

Rafael Bury

David Paul Miller

Michael Lawrence Bolind

Dick C Engbrecht

Minhua Li

Yue Lin

Donald L Roelfs

Steven W Sucech

J D Miller

Chen-Luh Lin

Phanindra Kodali

Qinyu Zhu

Jin Lin

Jin Liu

Qingxin Liu

Liu Qingxia

Paul Reed

A composite solid electrolyte () for lithium batteries can include a solid polymer (), a lithium salt () distributed in the solid polymer (), and lithium iron phosphate () distributed in the solid polymer (). A solid state lithium battery cell () can include a composite solid electrolyte layer (), an anode () containing lithium in contact with a first surface of the composite solid electrolyte layer (): and a cathode () in contact with a second surface of the composite solid electrolyte layer (). The composite solid electrolyte layer () can include a solid polymer (), a lithium salt () distributed in the solid polymer (), and lithium iron phosphate () distributed in the solid polymer ().

Solid state battery cell having a composite solid electrolyte including lithium iron phosphate

A cathode () for use in a lithium-air battery can include a polymer binder () having a conductive material (), phyllosilicate nanoparticles (), a lithium salt (), and a metal catalyst () distributed in the polymer binder (). The cathode () can be porous to allow oxygen to diffuse from surrounding air into the cathode (). A lithium-air battery can include a lithium metal anode, a solid electrolyte in contact with the lithium metal anode, and a cathode () in contact with the solid electrolyte. The cathode () can have a polymer binder () as a support matrix. The polymer binder () can be porous to allow oxygen to diffuse from surrounding air into the cathode (). The cathode () can include the polymer binder (), a conductive material (), phyllosilicate nanoparticles (), a lithium salt (), and a metal catalyst () distributed in the polymer binder ().

Cathodes for use in lithium-air batteries

A composite solid electrolyte () for lithium batteries can include a solid polymer (), phyllosilicate nanoparticles () distributed in the solid polymer, and a lithium salt () distributed in the solid polymer. In one example, the composite solid electrolyte can be used in a solid state lithium battery cell () made up of composite solid electrolyte, an anode () containing lithium in contact with a first surface of the composite solid electrolyte, and a cathode () in contact with a second surface of the composite solid electrolyte.

Composite solid electrolytes for lithium batteries

Compositions and methods for reducing the impact of hard water on gypsum board foaming are provided. The compositions include adding a foam to water and a calcined slurry. The foam includes water, dispersed air and a surfactant. Surfactants for use include a hydrophobic portion having an alkyl chain length distribution of about 20% to about 60% C8 chains; about 20% to about 60% C10 chains; about 14% to about 36% C12 chains and about 2% to about 20% C14 chains and also having a hydrophilic portion having about 0.2 to 3.0 ethoxy groups.

Hard water foaming agents and methods for gypsum board production

A method for making an agglomerate of an ore is disclosed. The method comprises contacting the ore with an acid solution and a stucco binder. The stucco binder may include calcium sulfate hemihydrate. The ore agglomerate may include ore, acid solution, and stucco-derived gypsum.

Methods for agglomerating ores

A fibrous mat-faced cementitious article comprising (a) a cementitious core, and (b) a first fibrous mat comprising polymer or mineral fibers and a hydrophobic finish on at least one surface thereof, wherein the hydrophobic finish is in contact with the cementitious core, and a method of preparing a fibrous mat-faced cementitious article, as well as a method of preparing a water-resistant cementitious article comprising (a) preparing an aqueous siloxane dispersion, wherein the dispersion comprises about 4 wt. % to about 8 wt. % siloxane, (b) combining the siloxane dispersion with a cementitious mixture to provide a cementitious slurry, (c) depositing the cementitious slurry onto a substrate, and (d) allowing the cementitious slurry to harden, thereby providing a cementitious article.

Water resistant cementitious article and method for preparing same

Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

Siloxane polymerization in wallboard

The present invention is a trona concentrate and a process for floating gangue material from trona ore that comprises forming an emulsion, conditioning the trona ore at a high solids content in a saturated trona suspension, and then floating and removing the gangue material. The process for separating trona from gangue materials in trona ore can include emulsifying an oil in an aqueous solution to form an oil-in-water emulsion. A saturated trona suspension having a high solids content can also be formed having trona of a desired particle size. The undissolved trona in the saturated suspension can be conditioned by mixing the saturated suspension and the oil-in-water emulsion to form a conditioning solid suspension of trona and gangue material. A gas can be injected through the conditioning solid suspension to float the gangue material. Thus, the floated gangue material can be readily separated from the trona to form a purified trona concentrate without requirements of additional heat or other expensive processing steps.

Purification of trona ores by conditioning with an oil-in-water emulsion

Selective flotation of phosphate minerals with hydroxamate collectors

Growing community of inventors

Mundelein, IL, United States of America

Xuming Wang