Abstract: Processes for preparing stabilized metal-containing nanoparticles comprising silver and/or a silver alloy composite by reacting a silver compound with a reducing agent comprising a hydrazine compound at a temperature between about 20° C. and about 60° C. The reaction being carried out by incrementally adding the silver compound or a mixture of the silver compound and a stabilizer to a solution comprising the reducing agent, a stabilizer, and a solvent. Conductive ink compositions containing stabilized metal-containing nanoparticles prepared by such processes.
Type:
Grant
Filed:
May 8, 2017
Date of Patent:
April 14, 2020
Assignee:
XEROX CORPORATION
Inventors:
Ping Liu, Mahya Mokhtari, Tila Tahmoures-Zadeh, Roger Gaynor, Yiliang Wu, Nan-Xing Hu
Abstract: A method of enhancing surface electrical conductivity of an article formed of a conductive polymer material, such as a conductive polymer film, includes the step of providing an article formed of a conductive polymer. The conductive polymer is made up of a dielectric polymeric material and conductive fibers. A desired pressure is applied to at least a portion of the article while simultaneously heating at least a portion of the article to a desired temperature. The desired pressure and the desired temperature are maintained on at least a portion of the article for a desired time period. This method reduces a polymer-rich skin layer on the surface of the conductive polymer material and helps to randomize the orientation of the conductive fibers on the surface.
Abstract: A prepreg containing at least the following components [A]-[F], wherein the ratio Ne/Nd of the number of structures Ne of component [F] present in a range of outside 110% of the particle diameter of component [E] and the number of structures Nd of component [F] present in a range outside 110% of the particle diameter of component [D] is 0.25 or higher. [A]: Carbon fibers, [B] thermosetting resin, [C]: curing agent, [D]: particles composed mainly of thermoplastic resin having a primary particle number-average particle size of 5-50 ?m, [E]: conductive particles different from component [D] and having a primary particle number-average particle size in the range of a specific expression, [F]: filler comprising a carbon material.
Abstract: The present invention provides a thick-film paste composition for printing the front side of a solar cell device having one or more insulating layers. The thick-film paste comprises an electrically conductive metal and an oxide composition dispersed in an organic medium that includes an organopolysiloxane and a fluorine-containing degradation agent.
Type:
Grant
Filed:
September 25, 2017
Date of Patent:
March 17, 2020
Assignee:
DUPONT ELECTRONICS, INC.
Inventors:
Hee Hyun Lee, Viacheslav V Diev, Eric Maurice Smith, Kalyan Venkata Chalapathi Rapolu
Abstract: Provided in one implementation is a method that includes introducing a volume of raw material into a chamber of a cavitation machine. The raw material can include a mixture comprising a powder and a solvent. The powder can have a first average particle size in the raw material. The method includes applying a hydrodynamic cavitation process to the raw material to produce a product material. The powder can have a second average particle size, smaller than the first average particle size, in the product material. The method includes causing the product material to exit the cavitation chamber and drying the product material to remove the solvent. Apparatus employed to apply the method are also provided.
Type:
Grant
Filed:
April 8, 2015
Date of Patent:
March 17, 2020
Assignee:
Applied Cavitation, Inc.
Inventors:
Joseph Albert Capobianco, Dana Lynn Hankey, Marshall Campion Tibbetts
Abstract: Polymer compositions having improved electromagnetic (EMI) shielding properties under high temperature are disclosed. The polymer compositions comprise a thermoplastic polymer, stainless steel fiber, and optionally one or more of glass fiber, a conductive filler, a second polymer, and other additives. The disclosed compositions maintain heat resistance and other mechanical properties under high temperatures.
Abstract: A method for producing silver nanowires, containing reduction-precipitating silver in the form of wire in an alcohol solvent having dissolved therein a silver compound, the deposition being performed in the alcohol solvent having dissolved therein a chloride, a bromide, an alkali metal hydroxide, an aluminum salt, and an organic protective agent, the molar ratio Al/OH of the total Al amount of the aluminum salt dissolved in the solvent and the total hydroxide ion amount of the alkali metal hydroxide dissolved therein being from 0.01 to 0.40, the molar ratio OH/Ag of the total hydroxide ion amount of the alkali metal hydroxide dissolved in the solvent and the total Ag amount of the silver compound dissolved therein being from 0.005 to 0.50.
Type:
Grant
Filed:
January 16, 2019
Date of Patent:
March 3, 2020
Assignee:
DOWA HOLDINGS CO., LTD.
Inventors:
Hirotoshi Saito, Daisuke Kodama, Kimitaka Sato
Abstract: Metal nanoparticles and compositions derived therefrom can be used in a number of different applications. Methods for making metal nanoparticles can include providing a first metal salt in a solvent; converting the first metal salt into an insoluble compound that constitutes a plurality of nanoparticle seeds; and after forming the plurality of nanoparticle seeds, reacting a reducing agent with at least a portion of a second metal salt in the presence of at least one surfactant and the plurality of nanoparticle seeds to form a plurality of metal nanoparticles. Each metal nanoparticle can include a metal shell formed around a nucleus derived from a nanoparticle seed, and the metal shell can include a metal from the second metal salt. The methods can be readily scaled to produce bulk quantities of metal nanoparticles.
Abstract: An electrical contact material may include a first contact that contacts a negative electrode; a third contact that contacts a positive electrode; and a second contact that is provided between the first contact and the third contact, wherein different plating materials are respectively attached to the first contact, the second contact, and the third contact.
Type:
Grant
Filed:
October 12, 2017
Date of Patent:
February 25, 2020
Assignees:
Hyundai Motor Company, Kia Motors Corporation
Abstract: Disclosed is an organic electronic material comprising charge transporting compounds and ionic compounds having electron-accepting properties and high solubility in a solvent. The organic electronic material is characterized by comprising charge transporting compounds and ionic compounds, and in that at least one of the ionic compounds is any one kind of compounds represented by general formulas (1b)-(3b). (In the formulas Y1-Y6 each independently represent a divalent linking group, R1-R6 each independently represent an electron-attracting organic substituent (these structures can further have substituents and hetero-atoms, and R1, R2 and R3, or, R4-R6 can respectively combine and become a ring shape or a polymer shape) and L+ represents a monovalent cation.
Abstract: A composition for solar cell electrodes includes a silver (Ag) powder, a glass frit containing silver (Ag), tellurium (Te) and zinc (Zn), and an organic vehicle, wherein the glass frit has a mole ratio of Ag to Te ranging from about 1:0.1 to about 1:50 and a mole ratio of Ag to Zn ranging from about 1:0.1 to about 1:40.
Type:
Grant
Filed:
December 15, 2014
Date of Patent:
February 18, 2020
Assignee:
Samsung SDI Co., Ltd.
Inventors:
Sang Hee Park, Hyun Jin Koo, Dae Sub Song
Abstract: A composition for solar cell electrodes and a solar cell electrode fabricated using the composition, the composition including a conductive powder; a glass frit; an organic vehicle; and a surface tension modifier, wherein the surface tension modifier has a surface tension of about 40 mN/m to about 65 mN/m, and the composition has a thixotropic index (TI) of about 3 to about 10 as represented by Equation 1: TI=(viscosity at 10 rpm/viscosity at 100 rpm),??[Equation 1] in Equation 1, the thixotropic index is calculated using viscosity values of the composition measured at 10 rpm and 100 rpm and at 23° C. with a No. 14 Spindle using a rotary viscometer.
Type:
Grant
Filed:
December 31, 2014
Date of Patent:
January 28, 2020
Assignee:
SAMSUNG SDI CO., LTD.
Inventors:
Tae Joon Kim, Sang Hee Park, Myung Sung Jung, Koon Ho Kim, Hyun Jin Ha
Abstract: A method includes providing nanoparticles having a tin coating surrounding a metal nucleus, such as copper. The nucleus forms first and acts as a seed growing into nanoparticles with a tin coating and a nucleus. The nanoparticles are at least partially vaporized, thereby producing vaporized tin ions. An emission of extreme ultraviolet (EUV) radiation is generated from the vaporized tin ions.
Abstract: A negative electrode active material for an electric device includes an alloy containing greater than or equal to 29% by mass of silicon and containing tin, carbon and inevitable impurities as a residue.
Type:
Grant
Filed:
November 5, 2012
Date of Patent:
January 28, 2020
Assignee:
Nissan Motor Co., Ltd.
Inventors:
Manabu Watanabe, Osamu Tanaka, Masao Yoshida
Abstract: Materials and methods for precious metal recovery are disclosed. Usable leaching solutions are preferably aqueous based and include appropriate materials in sufficient quantities to solubilize and stabilize precious metal. Such materials typically include oxidant material. Some or all of the oxidant material can be, in some instances, generated in-situ. The leaching solution is typically contacted with a substrate having a target precious metal, thereby solubilizing precious metal to form a stable, pregnant solution. The precious metal can then be recovered from the pregnant solution. In some instances, components of the leaching solution can be regenerated and reused in subsequent leaching.
Type:
Grant
Filed:
June 1, 2018
Date of Patent:
January 7, 2020
Assignee:
Enviroleach Technologies Inc.
Inventors:
Duane Nelson, Mohammad Doostmohammadi, Hanif Jafari, Ishwinder Singh Grewal
Abstract: The present invention provides a positive-electrode active material for non-aqueous secondary battery comprising a sodium transition metal composite oxide represented by Formula: NaxFe1-yMyO2, wherein 0.4?x?0.7, 0.25?y<1.0, and M is at least one element selected from the group consisting of manganese, cobalt and nickel, the sodium transition metal composite oxide having a crystal structure substantially composed of P63/mmc alone.
Abstract: An exemplary printable composition comprises a liquid or gel suspension of a plurality of metallic nanofibers or nanowires; a first solvent; and a viscosity modifier, resin, or binder. In various embodiments, the metallic nanofibers are between about 10 microns to about 100 microns in length, are between about 10 nm to about 120 nm in diameter, and are typically functionalized with a coating or partial coating of polyvinyl pyrrolidone or a similar compound. An exemplary metallic nanofiber ink which can be printed to produce a substantially transparent conductor comprises a plurality of metallic nanofibers; one or more solvents such as 1-butanol, ethanol, 1-pentanol, n-methylpyrrolidone, cyclohexanone, cyclopentanone, 1-hexanol, acetic acid, cyclohexanol, or mixtures thereof; and a viscosity modifier, resin, or binder such as polyvinyl pyrrolidone or a polyimide, for example.
Type:
Grant
Filed:
February 9, 2016
Date of Patent:
December 3, 2019
Assignee:
NthDegree Technologies Worldwide Inc
Inventors:
Mark David Lowenthal, Mark Lewandowski, Jeffrey Baldridge, Lixin Zheng, David Michael Chesler
Abstract: The present invention relates to organic copolymers and organic semiconducting compositions comprising these materials, including layers and devices comprising such organic semiconductor compositions. The invention is also concerned with methods of preparing such organic semiconductor compositions and layers and uses thereof. The invention has application in the field of printed electronics and is particularly useful as the semiconducting material for use in formulations for organic thin film transistor (OTFT) backplanes for displays, integrated circuits, organic light emitting diodes (OLEDs), photodetectors, organic photovoltaic (OPV) cells, sensors, memory elements and logic circuits.
Abstract: A photosensitive reducible silver ion-containing composition can be used to provide electrically-conductive silver metal in thin films or patterns. This composition comprises: a) a non-hydroxylic-solvent soluble silver complex represented by the following formula (I): (Ag+)a(L)b(P)c?? (I) wherein L represents an ?-oxy carboxylate; P represents an oxime compound; a is 1 or 2; b is 1 or 2; and c is 1, 2, 3, or 4, provided that when a is 1, b is 1, and when a is 2, b is 2; b) optionally, a photosensitizer that can either reduce the reducible silver ion or oxidize the ?-oxy carboxylate; and c) a solvent medium comprising at least one non-hydroxylic solvent. Electrically-conductive silver can be provided by photochemical conversion of the reducible silver ions in the complex.
Abstract: There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondary battery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used.