Sri International

University of Michigan

Other

Washington Research Foundation

Mayaterials, Inc.

Canon Kabushiki Kaisha

Delphi Technologies, Inc.

Air Products and Chemicals, Inc.

Guardian Industries Corporation

Panasonic Electric Works Co., Ltd.

The Washington Technology Center

Nist

Wadham Energy LP

Panasonic Corporation

Richard M Laine

Yigal Dov Blum

Julien Claudius Marchal

Vera Popova

Alan Sellinger

David James Krug

Kay A Youngdahl

Michael Z Asuncion

Daryl L Roberts

Santy Sulaiman

Norihiro Takamura

Kurt F Waldner

Clint R Bickmore

Robert B Wilson, Jr

Eleni Temeche

David J Krug

Thomas Hinklin

Min Soo Kim

Robert M Platz

Stephen C Rand

Xinyu Zhang

David J Rowcliffe

Rafil A Basheer

Isao Hasegawa

Yei-ping Wang

Albert S Hirschon

Allen L Dodge

Roy Rennesund

Brian L Mueller

Jiwon Choi

Guy R Williams

Lisa Viculis

Kean Wee Chew

Dean Richard Massey

Ken-ichi Shinotani

Paola Nardi

Daniel W Bartz

Kenneth B Schwartz

Peter Young Peterson

José Azurdia

Jonathan M McLeod

Joseph C Furgal

Christopher L Soles

Tom Hinklin

Chad M Brick

David R Treadwell

Hyun Wook Ro

Christopher M Desana

Youval Shvo

Vera Nikolova Popova-Gueorguieva

Anthony C Sutorik

Mengjie Yu

Tyrone Johns

Andrew Stewart Mccolm

Eongyu Yi

Ryo Tamaki

Vera N Popova-Gueorguieva

Ken-Ichi Shinotani

Ken-Ichi c/o Panasonic Electric Works Co Ltd Shinotani

Norihiro c/o Panasonic Electric Works Co Ltd Takamura

In various aspects, methods of making a silicon carbide or silicon nitride from rice hull ash (RHA) byproduct are provided. A treated silica depleted rice hull ash product (SDRHA) comprising silicon oxide at ≤about 65% by weight and carbon ≥about 35% by weight may be heated in an environment free of any additional carbon sources, but in an inert atmosphere, having a temperature of ≥about 1,200° C. to ≤about 1,700° C. for a carbothermal reaction that forms a product (e.g., nanocomposite product) comprising at least one of silicon carbide (SiC), silicon nitride (SiN), and silicon oxynitride (SiNO or non-stoichiometric SiNO, where x ranges from greater than 0 to less than 4). A negative electroactive material is also provided that includes silicon oxynitride (SiNO), which may be used in a lithium ion battery.

Methods of adjusting carbon and silica content in rice hull ash (RHA) byproducts to control carbothermal reduction forming nanostructured silicon carbide, silicon nitride, silicon oxynitride nanocomposites

A method of synthesizing a precursor for making a polymer, glass, or ceramic material is provided. The method includes reacting OPClwith NHor MNH, where M is Li, Na, K, Mg, Ca, Ba, or combinations thereof, to form O═P(NH2). The method then includes either: (i) reacting the O═P(NH)with M1NH, where M1 is Li, Na, K, Mg, Ca, Ba, or combinations thereof, to form the precursor; or (ii) heating the O═P(NH)to form a branched or cyclomeric compound, and reacting the branched or cyclomeric compound with M1NH, where M1 is Li, Na, K, Mg, Ca, Ba, or combinations thereof, to form the precursor. The precursor is an oligomer or a polymer. Uses for the precursor and the polymer, glass, or ceramic material as binders, sintering aids, adhesives, and electrolytes in battery components are also provided.

Polymer precursors for solid state electrolytes

The direct depolymerization of biogenic and other high surface area silica sources uses both simple and hindered diols to produce alkoxysilanes in one or two steps that can be separated and purified directly from the reaction mixture by distillation, extraction or filtration followed by solution modification and distillation or extraction. The alkoxysilanes can take the form of spirosiloxanes or simple alkoxysilanes or oligomers thereof. Thereafter they can be treated with acid to produce colloidal or precipitated silica or aerosolized and combusted to provide fumed silica without the intervention of SiCl.

Synthesis method of alkoxysilanes

The present invention discloses glycoxy silanes as a source of silica and silica precipitated by advantageous chemical reactions preferably beginning with biogenic silica. Alkoxy C&#x2014;O&#x2014;Sare hydrolyzed in a controlled fashion to nucleate formation of nanoparticles of silica. The growth rate of the particles is controlled by various parameters such that particles of known sizes, size distributions, specific surface areas and pore sizes and size distributions are recovered.

Glycoxy silanes as a source of silica and silicate precipitates

A method of producing alkoxysilanes and precipitated silicas from biogenic silicas is provided. In a first step, biogenically concentrated silica is mixed with a liquid polyol to obtain a mixture, and then the mixture is heated. In a second step, a base is added to obtain a reaction mixture. In a third step, the reaction mixture is filtered to remove the carbon enriched RHA or other undissolved biogenic silica and recover the solution of alkoxysilane and alcoholate. In a fourth step, alkoxysilane is purified by filtering, distilling, precipitating or extracting from the original reaction solution to precipitate various forms of silica. In a final step, residual base present in alkoxysilane is neutralized to eliminate the residual alkali metal base.

Method of producing alkoxysilanes and precipitated silicas from biogenic silicas

The invention is generally related to process for generating one or more molecules having the formula SiH, SiD, SiHD, and mixtures thereof, where x,y and z are integers &#x2267;1, H is hydrogen and D is deuterium, such as silane, comprising the steps of: providing a silicon containing material, wherein the silicon containing material includes at least 20 weight percent silicon atoms based on the total weight of the silicon containing material; generating a plasma capable of vaporizing a silicon atom, sputtering a silicon atom, or both using a plasma generating device; and contacting the plasma to the silicon containing material in a chamber having an atmosphere that includes at least about 0.5 mole percent hydrogen atoms and/or deuterium atoms based on the total moles of atoms in the atmosphere; so that a molecule having the formula SiH; (e.g., silane) is generated. The process preferably includes a step of removing one or more impurities from the SiH(e.g., the silane) to form a clean SiH, SiD, SiHD(e.g., silane). The process may also include a step of reacting the SiH, SiD, SiHD(e.g., the silane) to produce a high purity silicon containing material such as electronic grade metallic silicon, photovoltaic grade metallic silicon, or both.

Plasma processes for producing silanes and derivatives thereof

A method of forming a coating comprising the steps of dissolving an silsesquioxane (e.g., one that is primarily a cage compound with 8, 10, 12, 14 or related complete cages or with partially condensed cages containing primarily Si(O)units in the cage) in a solvent to form an silsesquioxane solution; introducing (e.g., dissolving) an additive in the solution (e.g., the additive being selected from a rare earth compound, an acid, an organic moiety, a precious metal or compound thereof, a transition metal compound, or any combination thereof, or any of their ionic constituents); and optionally mixing a diluent with the solution to form a coating that is applied to a substrate, wherein the resulting coating forms crosslinks between resulting pendant Si(OH)groups and a substrate surface. The present invention also contemplates coatings and coated articles consistent with the present teachings.

Silsesquioxane derived hard, hydrophobic and thermally stable thin films and coatings for tailorable protective and multi-structured surfaces and interfaces

The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount of the impurities; changing the ratio of carbon to silica; and reducing the silica to a high purity silicon (e.g., to photovoltaic silicon).

Low cost routes to high purity silicon and derivatives thereof

Methods of making and compositions of dense sintered ceramic nano- and micro-composite materials that are highly stable in a variety of conditions and exhibit superior toughness and strength. Liquid feed flame spray pyrolysis techniques form a plurality of nanoparticles (e.g., powder), each having a core region including a first metal oxide composition comprising Ce and/or Zr or other metals and a shell region including a second metal oxide composition comprising Al or other metals. In certain aspects, the core region comprises a partially stabilized tetragonal ZrOand the shell region comprises an &#x3b1;-AlOphase. The average actual density of the ceramic after sintering is greater than 50% and up to or exceeding 90% of a theoretical density of the ceramic.

Method of pressureless sintering production of densified ceramic composites

Fluoride catalyzed rearrangement reactions of polymeric silsesquioxanes [RSiO]involve reacting at least one silsesquioxane material with a catalytic amount of an organic fluoride at a temperature ranging from about &#x2212;50&#xb0; C. to about 120&#xb0; C. thereby forming a reaction mixture for a period ranging from 60 minutes to 48 hours. To the reaction mixture, a quenching agent is added to remove fluoride from the reaction mixture. A silsesquioxane cage compound can be isolated from the reaction mixture using a precipitation or other extraction process.

Properties tailoring in silsesquioxanes

Inorganic/organic hybrid polymers containing silsesquioxane cages are robust and exhibit desirable physical properties such as strength, hardness, and optical transparency at infrared and ultraviolet wavelengths. The polymers are prepared by polymerizing functionalized polyhedral silsesquioxane monomers such as polyhedral silsesquioxanes bearing two complementarily reactive functional groups bonded to cage silicon atoms by means of spacer moieties. The spacer moieties allow for steric mobility and more complete cure than polyhedral silsesquioxanes bearing reactive functional groups bound directly to cage silicon atoms.

Ultraviolet transmissive polyhedral silsesquioxane polymers

A multi-functional silsesquioxane, method of making the same, and coatings incorporating the same, including a polyhedral silsesquioxane including at least one first face and at least one second face that is spaced apart from the at least one first face; at least one first functionality bonded to the at least one first face; and at least one second functionality different from the first functionality, and being bonded to the at least one second face. In one particular respect, silica for the silsesquioxane may be derived from rice hull ash via an octa(tetramethylammonium)silsesquioxane octaanion.

Multi-functional silsesquioxanes for novel coating applications

Nano- and micron sized metal oxide and mixed metal oxide particles are injected into a high temperature region wherein the temperature is between about 400&#xb0; C. and less than 2000&#xb0; C., and collected as particles or as coatings wherein a particulate nature is substantially maintained. The particles are altered in at least one of phase, morphology, composition, and particle size distribution, and may achieve further changes in these characteristics by coinjection of metal oxide precursor in liquid form.

Liquid feed flame spray modification of nanoparticles

Polyhedral silsesquioxane anions are economically prepared by reaction of a silica source derived from combusted organic material with a quaternary ammonium hydroxide compound. Reaction of the resulting anions with chlorosilanes may be effected in near stoichiometric fashion in organic solvent containing reactive quantities of organic acids such as formic acid. The functional groups on the resulting functionalized silsesquioxanes may be substituted for other functional groups by reaction with di- or polysiloxanes in the presence of a synthetic ion exchange resin.

Facile synthesis of polyhedral silsesquioxane anions and use thereof

A system for underfilling in a chip package includes an underfill mixture that ameliorates the CTE mismatch that typically exists between a packaged die and a resin-impregnated fiberglass mounting substrate. In one embodiment, the system includes an underfill mixture that comprises a principal underfill composition of a rigid octaaminophenyl silsesquioxane (OAPS) that is used as a curing agent for a tetrafunctional, low viscosity, and relatively rigid TGMX epoxy resin. An embodiment is also directed to the assembly of a flip chip package that uses the underfill mixture.

Flip chip system with organic/inorganic hybrid underfill composition

Growing community of inventors

Ann Arbor, MI, United States of America

Richard M Laine