Patents by Inventor Peter Halvor Larsen
Peter Halvor Larsen 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: 20100062312Abstract: The present invention relates to a thin and in principle unsupported solid oxide cell, comprising at least a porous anode layer, an electrolyte layer and a porous cathode layer, wherein the anode layer and the cathode layer comprise an electrolyte material, at least one metal and a catalyst material, and wherein the overall thickness of the thin reversible cell is about 150 ?m or less, and to a method for producing same. The present invention also relates to a thin and in principle unsupported solid oxide cell, comprising at least a porous anode layer, an electrolyte layer and a porous cathode layer, wherein the anode layer and the cathode layer comprise an electrolyte material and a catalyst material, wherein the electrolyte material is doper zirconia, and wherein the overall thickness of the thin reversible cell is about 150 ?m or less, and to a method for producing same.Type: ApplicationFiled: November 23, 2007Publication date: March 11, 2010Applicant: TECHNICAL UNIVERSITY OF DENMARKInventors: Peter Halvor Larsen, Soeren Linderoth, Peter Vang Hendriksen
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Publication number: 20100015473Abstract: A multi-layer coating for protection of metals and alloys against oxidation at high temperatures in general is provided. The invention utilizes a multi-layer ceramic coating on metals or alloys for increased oxidation-resistance, comprising at least two layers, wherein the first layer (3) which faces the metal containing surface and the second layer facing the surrounding atmosphere (4) both comprise an oxide, and wherein the first layer (3) has a tracer diffusion coefficient for cations Mm+, where M is the scale forming element of the alloy, and the second layer (4) has a tracer diffusion coefficient for oxygen ions O2? satisfying the following formula: wherein p(O2)m is the oxygen partial pressure in equilibrium between the metallic sub-strate and MaOb, p(O2)ex is the oxygen partial pressure in the reaction atmosphere, DM is the tracer diffusion coefficient of the metal cations Mm+ in the first layer (3), and Do is O tracer diffusion coefficient in the second layer (4).Type: ApplicationFiled: April 24, 2007Publication date: January 21, 2010Applicant: TECHNICAL UNIVERSITY OF DENMARKInventors: Peter Vang Hendriksen, Lars Mikkelsen, Peter Halvor Larsen, Soeren Linderoth, Mogens Mogensen
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Patent number: 7601183Abstract: The present invention provides a method for producing a reversible solid oxide fuel cell, comprising the steps of: —providing a metallic support layer; —forming a cathode precursor layer on the metallic support layer; —forming an electrolyte layer on the cathode precursor layer; —sintering the obtained multilayer structure; —impregnating the cathode precursor layer so as to form a cathode layer; and—forming an anode layer on top of the electrolyte layer. Furthermore, a reversible SOFC is provided which is obtainable by said method. The method advantageously allows for a greater choice of anode materials, resulting in more freedom in cell design, depending on the desired application.Type: GrantFiled: February 2, 2006Date of Patent: October 13, 2009Assignee: Technical University of DenmarkInventor: Peter Halvor Larsen
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Publication number: 20090061279Abstract: A reversible solid oxide fuel cell obtainable by a method comprising the steps of: providing a metallic support layer; forming a cathode precursor layer on the metallic support layer; forming an electrolyte layer on the cathode precursor layer; sintering the obtained multilayer structure; in any order conducting the steps of: forming a cathode layer by impregnating the cathode precursor layer, and forming an anode layer on the electrolyte layer; characterised in that the method further comprises prior to forming said cathode layer, impregnating a precursor solution or suspension of a barrier material into the metallic support layer and the cathode precursor layer and subsequently conducting a heat treatment.Type: ApplicationFiled: August 27, 2008Publication date: March 5, 2009Inventor: Peter Halvor Larsen
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Publication number: 20090061278Abstract: Polymerised inorganic-organic precursor solution obtainable according to a process comprising the steps of (a) forming a solution of at least one metal cation and an organic compound and (b) heating the solution to a temperature between 20-300° C. to form a polymerised solution of precursor for nano-sized oxides, and (c) concluding the heating when the room temperature viscosity of the solution is from 10 to 500 mPa·s.Type: ApplicationFiled: August 26, 2008Publication date: March 5, 2009Inventors: Mohan Menon, Peter Halvor Larsen
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Publication number: 20090061285Abstract: Electrode material obtainable according to a process comprising the steps of: (a) providing a precursor solution or suspension of a first component, said solution or suspension containing a solvent; (b) forming particles of the first component and entrapping said particles within the pore structure of a second component by mixing and subsequently heating, drying or centrifuging a solution or suspension or powder of the second component with the precursor solution or suspension of said first component, in which said second component has a porous structure with average pore diameter of 2 to 1000 nm.Type: ApplicationFiled: August 27, 2008Publication date: March 5, 2009Inventors: Mohan Menon, Peter Halvor Larsen
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Publication number: 20090061287Abstract: The present invention provides a graded multilayer structure, comprising a support layer (1) and at least 10 layers (2, 3) forming a graded layer, wherein each of the at least 10 layers (2, 3) is at least partially in contact with the support layer (1), wherein the at least 10 layers (2, 3) differ from each other in at least one property selected from layer composition, porosity and conductivity, and wherein the at least 10 layers (2, 3) are arranged such that the layer composition, porosity and/or conductivity horizontally to the support layer (1) forms a gradient over the total layer area.Type: ApplicationFiled: August 14, 2008Publication date: March 5, 2009Inventors: Peter Halvor Larsen, Peter Vang Hendriksen, Soren Linderoth, Mogens Mogensen
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Publication number: 20080248361Abstract: A reversible SOFC monolithic stack is provided which comprises: 1) a first component which comprises at least one porous metal containing layer (1) with a combined electrolyte and sealing layer on the porous metal containing layer (1); wherein the at least one porous metal containing layer (1) hosts an electrode; 2) a second component comprising at least one porous metal containing layer (1) with a combined interconnect and sealing layer on the porous metal containing layer; wherein the at least one porous metal containing layers hosts an electrode. Further provided is a method for preparing a reversible solid oxide fuel cell stack. The obtained solid oxide fuel cell stack has improved mechanical stability and high electrical performance, while the process for obtaining same is cost effective.Type: ApplicationFiled: August 31, 2006Publication date: October 9, 2008Applicant: TECHNICAL UNIVERSITY OF DENMARKInventors: Peter Halvor Larsen, Anders Smith, Mogens Mogensen, Soeren Linderoth, Peter Vang Hendriksen
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Publication number: 20080166618Abstract: The present invention provides a method of producing a solid oxide fuel cell, comprising the steps of: forming an anode support layer; applying an anode layer on the anode support layer; applying an electrolyte layer on the anode layer; and sintering the obtained structure; wherein the anode support layer and/or the anode layer comprises a composition comprising doped zirconia, doped ceria and/or a metal oxide with an oxygen ion or proton conductivity, NiO and at least one oxide selected from the group consisting of AI2O3, TiO2, Cr2O3, Sc2O3, VOx, TaOx, MnOx, NbOx, CaO, Bi2O3, LnOx, MgCr2O4, MgTiO3, CaAI2O4, LaAIO3, YbCrO3, ErCrO4, NiTiO3, NiCr2O4, and mixtures thereof. According to the invention, a combination of nickel coarsening prevention due to specific Ni-particle growth inhibitors, and, at the same time, a strengthening of the ceramic structure of the anode support layer and/or the anode layer is achieved.Type: ApplicationFiled: January 31, 2006Publication date: July 10, 2008Applicant: Technical University of DenmarkInventors: Peter Halvor Larsen, Charissa Chung, Mogens Mogensen
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Publication number: 20080142148Abstract: A method of manufacturing metal to glass, metal to metal and metal to ceramic connections to be used in SOFC applications, said connections being produced as a mixture of a base glass powder and a metal oxide powder. As a result, the inherent properties of the glass used in the composite seals may be altered locally in the metal-coating interface by adding e.g. MgO in order to control the viscosity and wetting, and at the same time maintain the bulk properties such as high coefficient of thermal expansion of the basic glass towards the seal components.Type: ApplicationFiled: December 23, 2005Publication date: June 19, 2008Applicant: TECHNICAL UNIVERSITY OF DENMARKInventors: Karsten Agersted Nielsen, Mette Solvang, Peter Halvor Larsen
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Publication number: 20080124602Abstract: A method of producing a reversible solid oxide cell. The method includes the steps of tape casting an anode support layer on a support (1); tape casting an anode layer on a support (2); tape casting an electrolyte layer on a support (3); and either laminating said anode layer on top of said anode support layer; removing said support (2) from said anode layer; laminating said electrolyte layer on top of said anode layer; and sintering the multilayer structure; or laminating said anode layer on top of said electrolyte layer; removing said support (2) from said anode layer; laminating said anode support layer on top of said anode layer; and sintering the multilayer structure.Type: ApplicationFiled: November 21, 2007Publication date: May 29, 2008Applicant: Technical University of DenmarkInventors: Peter Halvor Larsen, Karen Brodersen
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Publication number: 20080118635Abstract: The present invention provides a method for producing a reversible solid oxide fuel cell, comprising the steps of: —providing a metallic support layer; —forming a cathode precursor layer on the metallic support layer; —forming an electrolyte layer on the cathode precursor layer; —sintering the obtained multilayer structure; —impregnating the cathode precursor layer so as to form a cathode layer; and —forming an anode layer on top of the electrolyte layer. Furthermore, a reversible SOFC is provided which is obtainable by said method. The method advantageously allows for a greater choice of anode materials, resulting in more freedom in cell design, depending on the desired application.Type: ApplicationFiled: February 2, 2006Publication date: May 22, 2008Applicant: TECHNICAL UNIVERSITY OF DENMARKInventor: Peter Halvor Larsen
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Patent number: 6828263Abstract: Glass composition for use as sealing material in fuel cells, comprising a glass matrix with main components consisting of SiO2, Al2O3, and one or more compounds from group I metal oxides and/or group II metal oxides, and a filler material evenly dispersed in the matrix, wherein the filler material consists of particles of one or more refractive compounds from the group: MgO—MgAl2O4, stabilized zirconia, rare earth oxides, (Mg,Ca)SiO3, Mg2SiO4, MgSiO3, CaSiO3, CaZrO3, ThO2, TiO2, MIIAlSi2O8, where MII=Ca, Sr or Ba.Type: GrantFiled: July 10, 2002Date of Patent: December 7, 2004Assignee: Haldor Topsoe A/SInventors: Jørgen Gutzon Larsen, Peter Halvor Larsen, Carsten Bagger
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Publication number: 20040081893Abstract: An electronically conducting or mixed ionic and electronically conducting non-stoich-iometric oxide, in which undesired pO2 driven volume changes of the main phase is counterbalanced by contraction/expansion of one or several secondary phase(s) or by gradual solution/dissolution of the secondary phae in/from the main phase. This principle makes it possible to achieve improved dimensional stability relatively to that of the main phase alone, whilst maintaining good transport properties or, alternatively, to improve transport properties, whilst maintaining the maximum volume change in a technological application.Type: ApplicationFiled: October 20, 2003Publication date: April 29, 2004Inventors: Jesper Romer Hansen, Peter Halvor Larsen, Mogens Bjerg Mogensen, Peter Vang Hendriksen
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Publication number: 20030040420Abstract: Glass composition for use as sealing material in fuel cells, comprising a glass matrix with main components consisting of SiO2, Al2O3, and one or more compounds from group I metal oxides and/or group II metal oxides, and a filler material evenly dispersed in the matrix, wherein the filler material consists of particles of one or more refractive compounds from the group: MgO—MgAl2O4, stabilized zirconia, rare earth oxides, (Mg,Ca)SiO3, Mg2SiO4, MgSiO3, CaSiO3, CaZrO3, ThO2, TiO2, MIIAlSi2O8, where MII=Ca, Sr or Ba.Type: ApplicationFiled: July 10, 2002Publication date: February 27, 2003Inventors: Jorgen Gutzon Larsen, Peter Halvor Larsen, Carsten Bagger