Patents by Inventor Donghai Wang
Donghai Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20120295096Abstract: Nanocomposite materials comprising a metal oxide bonded to at least one graphene material. The nanocomposite materials exhibit a specific capacity of at least twice that of the metal oxide material without the graphene at a charge/discharge rate greater than about 10 C.Type: ApplicationFiled: July 26, 2012Publication date: November 22, 2012Inventors: Jun Liu, Ilhan A. Aksay, Daiwon Choi, Donghai Wang, Zhenguo Yang
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Publication number: 20120295027Abstract: A nanocomposite material formed of graphene and a mesoporous metal oxide having a demonstrated specific capacity of more than 200 F/g with particular utility when employed in supercapacitor applications. A method for making these nanocomposite materials by first forming a mixture of graphene, a surfactant, and a metal oxide precursor, precipitating the metal oxide precursor with the surfactant from the mixture to form a mesoporous metal oxide. The mesoporous metal oxide is then deposited onto a surface of the graphene.Type: ApplicationFiled: July 26, 2012Publication date: November 22, 2012Inventors: Jun Liu, Ilhan A. Aksay, Rong Kou, Donghai Wang
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Patent number: 8257867Abstract: Nanocomposite materials comprising a metal oxide bonded to at least one graphene material. The nanocomposite materials exhibit a specific capacity of at least twice that of the metal oxide material without the graphene at a charge/discharge rate greater than about 10C.Type: GrantFiled: July 27, 2009Date of Patent: September 4, 2012Assignee: Battelle Memorial InstituteInventors: Jun Liu, Ilhan A. Aksay, Daiwon Choi, Donghai Wang, Zhenguo Yang
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Publication number: 20120207994Abstract: Embodiments presented herein provide a new approach for high-performance lithium-sulfur battery by using novel carbon-metal oxide-sulfur composites. The composites may be prepared by encapsulating sulfur particles in bifunctional carbon-supported metal oxide or other porous carbon-metal oxide composites. In this way, the porous carbon-metal oxide composite confines sulfur particles within its tunnels and maintain the electrical contact during cycling. Furthermore, the uniformly embedded metal oxides in the structure strongly adsorb polysulfide intermediates, avoid dissolution loss of sulfur, and ensure high coulombic efficiency as well as a long cycle life.Type: ApplicationFiled: February 13, 2012Publication date: August 16, 2012Inventors: Donghai Wang, Zhongxue Chen, Tianren Xu
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Publication number: 20120107213Abstract: Methods of the present invention can be used to synthesize nanowires with controllable compositions and/or with multiple elements. The methods can include coating solid powder granules, which comprise a first element, with a catalyst. The catalyst and the first element should form when heated a liquid, mixed phase having a eutectic or peritectic point. The granules, which have been coated with the catalyst, can then be heated to a temperature greater than or equal to the eutectic or peritectic point. During heating, a vapor source comprising the second element is introduced. The vapor source chemically interacts with the liquid, mixed phase to consume the first element and to induce condensation of a product that comprises the first and second elements in the form of a nanowire.Type: ApplicationFiled: December 28, 2011Publication date: May 3, 2012Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Jiguang Zhang, Jun Liu, Zhenguo Yang, Guanguang Xia, Leonard S. Fifield, Donghai Wang, Daiwon Choi, Gordon L. Graff, Larry R. Pederson
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Patent number: 8110167Abstract: Methods of the present invention can be used to synthesize nanowires with controllable compositions and/or with multiple elements. The methods can include coating solid powder granules, which comprise a first element, with a catalyst. The catalyst and the first element should form when heated a liquid, mixed phase having a eutectic or peritectic point. The granules, which have been coated with the catalyst, can then be heated to a temperature greater than or equal to the eutectic or peritectic point. During heating, a vapor source comprising the second element is introduced. The vapor source chemically interacts with the liquid, mixed phase to consume the first element and to induce condensation of a product that comprises the first and second elements in the form of a nanowire.Type: GrantFiled: February 10, 2009Date of Patent: February 7, 2012Assignee: Battelle Memorial InstituteInventors: Jiguang Zhang, Jun Liu, Zhenguo Yang, Guanguang Xia, Leonard S Fifield, Donghai Wang, Daiwon Choi, Gordon Graff, Larry R Pederson
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Publication number: 20110111299Abstract: Lithium ion batteries having an anode comprising at least one graphene layer in electrical communication with titania to form a nanocomposite material, a cathode comprising a lithium olivine structure, and an electrolyte. The graphene layer has a carbon to oxygen ratio of between 15 to 1 and 500 to 1 and a surface area of between 400 and 2630 m2/g. The nanocomposite material has a specific capacity at least twice that of a titania material without graphene material at a charge/discharge rate greater than about 10 C. The olivine structure of the cathode of the lithium ion battery of the present invention is LiMPO4 where M is selected from the group consisting of Fe, Mn, Co, Ni and combinations thereof.Type: ApplicationFiled: October 9, 2010Publication date: May 12, 2011Inventors: Jun Liu, Daiwon Choi, Zhenguo Yang, Donghai Wang, Gordon L. Graff, Zimin Nie, Vilayanur V. Viswanathan, Jason Zhang, Wu Xu, Jin Yong Kim
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Publication number: 20110051316Abstract: A nanocomposite material formed of graphene and a mesoporous metal oxide having a demonstrated specific capacity of more than 200 F/g with particular utility when employed in supercapacitor applications. A method for making these nanocomposite materials by first forming a mixture of graphene, a surfactant, and a metal oxide precursor, precipitating the metal oxide precursor with the surfactant from the mixture to form a mesoporous metal oxide. The mesoporous metal oxide is then deposited onto a surface of the graphene.Type: ApplicationFiled: September 3, 2009Publication date: March 3, 2011Inventors: Jun Liu, IIhan A. Aksay, Rong Kou, Donghai Wang
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Publication number: 20110045347Abstract: Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.Type: ApplicationFiled: August 9, 2010Publication date: February 24, 2011Inventors: Jun Liu, Daiwon Choi, Rong Kou, Zimin Nie, Donghai Wang, Zhenguo Yang
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Publication number: 20110033746Abstract: Nanocomposite materials having at least two layers, each layer consisting of one metal oxide bonded to at least one graphene layer were developed. The nanocomposite materials will typically have many alternating layers of metal oxides and graphene layers, bonded in a sandwich type construction and will be incorporated into an electrochemical or energy storage device.Type: ApplicationFiled: August 10, 2009Publication date: February 10, 2011Inventors: Jun Liu, Ilhan A. Aksay, Daiwon Choi, Rong Kou, Zimin Nie, Donghai Wang, Zhenguo Yang
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Publication number: 20100202952Abstract: Methods of the present invention can be used to synthesize nanowires with controllable compositions and/or with multiple elements. The methods can include coating solid powder granules, which comprise a first element, with a catalyst. The catalyst and the first element should form when heated a liquid, mixed phase having a eutectic or peritectic point. The granules, which have been coated with the catalyst, can then be heated to a temperature greater than or equal to the eutectic or peritectic point. During heating, a vapor source comprising the second element is introduced. The vapor source chemically interacts with the liquid, mixed phase to consume the first element and to induce condensation of a product that comprises the first and second elements in the form of a nanowire.Type: ApplicationFiled: February 10, 2009Publication date: August 12, 2010Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Jiguang Zhang, Jun Liu, Zhenguo Yang, Guanguang Xia, Leonard S. Fifield, Donghai Wang, Daiwon Choi, Gordon L. Graff, Larry R. Pederson
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Publication number: 20100081057Abstract: Nanocomposite materials comprising a metal oxide bonded to at least one graphene material. The nanocomposite materials exhibit a specific capacity of at least twice that of the metal oxide material without the graphene at a charge/discharge rate greater than about 10C.Type: ApplicationFiled: July 27, 2009Publication date: April 1, 2010Inventors: Jun Liu, Ilhan A. Aksay, Daiwon Choi, Donghai Wang, Zhenguo Yang
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Patent number: 7526264Abstract: An N×M crosspoint switch allows a signal from any one of the N inputs to be routed to one or more of the M crosspoint switch outputs. The switches within the crosspoint switch can be configured as voltage mode or current mode switches. In voltage mode switching an input to the crosspoint switch is provided to an input device, such as an amplifier, having a low output impedance. The output of the low impedance device is provided to a switch that connects the output of the low impedance device to a high input impedance device, such as a band translation device. In current mode switching, the low impedance output of the input device is connected to selectively activated high isolation transconductance devices having high input impedances. The outputs of the transconductance devices are connected to low impedance devices that operate as summing nodes.Type: GrantFiled: September 30, 2006Date of Patent: April 28, 2009Assignee: RF Magic, Inc.Inventors: Keith Bargroff, Bert Fransis, Keith Rampmeier, Raducu Lazarescu, Kostas Papathanasiou, Esa Tarvainen, Tony Mellissonos, Donghai Wang
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Publication number: 20080287635Abstract: Macro hydrophobic clusters and complexes of soybean globular proteins were observed using TEM (Transmission Electron Microscope). Upon unfolding, hydrophobic groups of the proteins became exposed toward the surface of the protein and actively interacted with other hydrophobic groups of other protein molecules, thereby forming hydrophobic bonding. The hydrophobic bonding resulted in hydrophobic protein clusters, the formation of which was affected by the degree of protein unfolding, protein structure, and hydrophobic components. Such hydrophobic clusters followed the global minimum free energy theory and formed spherical like structures with diameters ranging from 100 nm to 3000 nm. Such an understanding lends applicability to many uses in adhesives, molding composites, surfactants for oil-water systems, bio-based interior construction paints and paper coatings, fiber production, and metal powder molding applications.Type: ApplicationFiled: April 24, 2006Publication date: November 20, 2008Inventors: Xiuzhui Sun, Li Xhu, Donghai Wang
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Patent number: 7416598Abstract: The, present invention provides useful adhesive compositions having similar adhesive properties to conventional UF and PPF resins. The compositions generally include a protein portion and modifying ingredient portion selected from the group consisting of carboxyl-containing compounds, aldehyde-containing compounds, epoxy group-containing compounds, and mixtures thereof. The composition is preferably prepared at a pH level at or near the isoelectric point of the protein. In other preferred forms, the adhesive composition includes a protein portion and a carboxyl-containing group portion.Type: GrantFiled: January 3, 2005Date of Patent: August 26, 2008Assignee: Kansas State University Research FoundationInventors: Susan Sun, Donghai Wang, Zhikai Zhong, Guang Yang
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Publication number: 20070087712Abstract: An N×M crosspoint switch allows a signal from any one of the N inputs to be routed to one or more of the M crosspoint switch outputs. The switches within the crosspoint switch can be configured as voltage mode or current mode switches. In voltage mode switching an input to the crosspoint switch is provided to an input device, such as an amplifier, having a low output impedance. The output of the low impedance device is provided to a switch that connects the output of the low impedance device to a high input impedance device, such as a band translation device. In current mode switching, the low impedance output of the input device is connected to selectively activated high isolation transconductance devices having high input impedances. The outputs of the transconductance devices are connected to low impedance devices that operate as summing nodes.Type: ApplicationFiled: September 30, 2006Publication date: April 19, 2007Applicant: RF Magic, Inc.Inventors: Keith Bargroff, Bert Fransis, Keith Rampmeier, Raducu Lazarescu, Kostas Papathanasiou, Esa Tarvainen, Tony Mellissinos, Donghai Wang
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Patent number: 7001669Abstract: Metal-containing nanostructured films are prepared by electrodepositing a metal-containing composition within the pores of a mesoporous silica template to form a metal-containing silica nanocomposite. The nanocomposite is annealed to strengthen the deposited metal-containing composition. The silica is then removed from the nanocomposite, e.g., by dissolving the silica in an etching solution to provide a self-supporting metal-containing nanostructured film. The nanostructured films have a nanowire or nanomesh architecture depending on the pore structure of the mesoporous silica template used to prepare the films.Type: GrantFiled: December 23, 2002Date of Patent: February 21, 2006Assignee: The Administration of the Tulane Educational FundInventors: Yunfeng Lu, Donghai Wang
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Publication number: 20050166796Abstract: The, present invention provides useful adhesive compositions having similar adhesive properties to conventional UF and PPF resins. The compositions generally include a protein portion and modifying ingredient portion selected from the group consisting of carboxyl-containing compounds, aldehyde-containing compounds, epoxy group-containing compounds, and mixtures thereof. The composition is preferably prepared at a pH level at or near the isoelectric point of the protein. In other preferred forms, the adhesive composition includes a protein portion and a carboxyl-containing group portion.Type: ApplicationFiled: January 3, 2005Publication date: August 4, 2005Inventors: Xiuzhi Sun, Donghai Wang, Zhikai Zhong, Guang Yang
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Publication number: 20050005296Abstract: An N×M crosspoint switch allows a signal from any one of the N inputs to be routed to one or more of the M crosspoint switch outputs. The switches within the crosspoint switch can be configured as voltage mode or current mode switches. In voltage mode switching an input to the crosspoint switch is provided to an input device, such as an amplifier, having a low output impedance. The output of the low impedance device is provided to a switch that connects the output of the low impedance device to a high input impedance device, such as a band translation device. In current mode switching, the low impedance output of the input device is connected to selectively activated high isolation transconductance devices having high input impedances. The outputs of the transconductance devices are connected to low impedance devices that operate as summing nodes.Type: ApplicationFiled: December 11, 2003Publication date: January 6, 2005Inventors: Keith Bargroff, Bert Fransis, Keith Rampmeier, Raducu Lazarescu, Kostas Papathanasiou, Esa Tarvainen, Tony Mellissinos, Donghai Wang
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Publication number: 20040118698Abstract: Metal-containing nanostructured films are prepared by electrodepositing a metal-containing composition within the pores of a mesoporous silica template to form a metal-containing silica nanocomposite. The nanocomposite is annealed to strengthen the deposited metal-containing composition. The silica is then removed from the nanocomposite, e.g., by dissolving the silica in an etching solution to provide a self-supporting metal-containing nanostructured film. The nanostructured films have a nanowire or nanomesh architecture depending on the pore structure of the mesoporous silica template used to prepare the films.Type: ApplicationFiled: December 23, 2002Publication date: June 24, 2004Inventors: Yunfeng Lu, Donghai Wang