Technical University of Denmark

Danmarks Tekniske Universitet

Dynelectro Aps

Mogens Bjerg Mogensen

Peter Halvor Larsen

Peter Vang Hendriksen

Kent Kammer Hansen

Soren Linderoth

Soeren Linderoth

Ming Chen

Peter Blennow

Nadja Teresia Lönnroth

Søren Linderoth

Anders Smith

Lars Mikkelsen

Weiguo Wang

Martin Søgaard

Pia Lolk Mollerup

Anne Hauch

Wei Guo Wang

Bjarke Thomas Dalslet

Charissa Chung

Christopher Ronald Graves

Frank Allebrod

Christodoulos Chatzichristodoulou

Soren Hojgaard Jensen

Søren Højgaard Jensen

The invention relates to a rechargeable battery and a method to operate a rechargeable battery having high efficiency and high energy density for storing energy. The battery stores electrical energy in the bonds of carbon and oxygen atoms by converting carbon dioxide into solid carbon and oxygen.

Rechargeable carbon-oxygen battery

The present invention relates to a reversible electrochemical cell, such as an electrolysis cell for water splitting or for conversion of carbon dioxide and water into fuel. The present invention relates also to an electrochemical cell that when operated in reverse performs as a fuel cell. The electrochemical cell comprises gasdiffusion electrodes and a porous layer made of materials and having a structure adapted to allow for a temperature range of operation between 100-374&#xb0; C. and in a pressure range between 3-200 bars.

[object Object]

A reversible SOFC monolithic stack is provided which comprises: 1) a first component which comprises at least one porous metal containing layer () with a combined electrolyte and sealing layer on the porous metal containing layer (); wherein the at least one porous metal containing layer () hosts an electrode; 2) a second component comprising at least one porous metal containing layer () 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.

Reversible solid oxide fuel cell stack and method for preparing same

The present invention provides a solid oxide cell comprising a support layer, a first electrode layer, an electrolyte layer, and a second cathode layer, wherein at least one of the electrode layers comprises electrolyte material, a catalyst and agglomerated particles selected from the group consisting of alkali oxides, earth alkali oxides and transition metal oxides.

Removal of impurity phases from electrochemical devices

A ceramic anode structure obtainable by a process comprising the steps of: (a) providing a slurry by dispersing a powder of an electronically conductive phase and by adding a binder to the dispersion, in which said powder is selected from the group consisting of niobium-doped strontium titanate, vanadium-doped strontium titanate, tantalum-doped strontium titanate, and mixtures thereof, (b) sintering the slurry of step (a), (c) providing a precursor solution of ceria, said solution containing a solvent and a surfactant, (d) impregnating the resulting sintered structure of step (b) with the precursor solution of step (c), (e) subjecting the resulting structure of step (d) to calcination, and (f) conducting steps (d)-(e) at least once.

Ceria and strontium titanate based electrodes

A multi-layer coating for protection of metals and alloys against oxidation at high temperatures 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 () and the second layer () both comprise an oxide, and wherein the first layer () has a tracer diffusion coefficient for cations M, where M is the scale forming element of the alloy, and the second layer () has a tracer diffusion coefficient for oxygen ions Osatisfying the following formula: 

Multi-layer coating

The present invention provides a solid oxide cell stack, comprising: &#x2014;at least two cells which each comprise a first electrode layer, an electrolyte layer, a second electrode layer, &#x2014;gas passage ways, and&#x2014;sealing components, wherein the sealing components comprise a glass component and a component comprising a metal oxide or metal oxide precursor, and wherein the component comprising the metal oxide or metal oxide precursor is located at least in between the glass component and a gas passage way. The present invention further provides a method of producing the above solid oxide cell stack, comprising the steps of: &#x2014;providing at least two SOC cells comprising each a first electrode layer or electrode precursor layer, an electrolyte layer, a second electrode layer or electrode precursor layer; &#x2014;stacking at least two cells so as to form a cell stack including gas passage ways; and&#x2014;sealing said cell stack with sealing components, wherein the sealing components comprise a glass component and a component comprising a metal oxide or metal oxide precursor, and wherein the component comprising the metal oxide or metal oxide precursor is at least located in between the glass component and a gas passage way.

Composite glass seal for a solid oxide electrolyser cell stack

The present invention provides a graded multilayer structure, comprising a support layer () and at least 10 layers () forming a graded layer, wherein each of the at least 10 layers () is at least partially in contact with the support layer (),

Horizontally graded structures for electrochemical and electronic devices

A cermet anode structure obtainable by a process comprising the steps of: (a) providing a slurry by dispersing a powder of an electronically conductive phase and by adding a binder to the dispersion, in which said electronically conductive phase comprises a FeCrMx alloy, wherein Mx is selected from the group consisting of Ni, Ti, Nb, Ce, Mn, Mo, W, Co, La, Y, Al, and mixtures thereof, (b) forming a metallic support of said slurry of the electronically conductive phase, (c) providing a precursor solution of ceria, said solution containing a solvent and a surfactant, (d) impregnating the structure of step (b) with the precursor solution of step (c), (e) subjecting the resulting structure of step (d) to calcination, and (f) conducting steps (d)-(e) at least once.

Ceria and stainless steel based electrodes

The present invention provides a membrane, comprising a porous support layer a gas tight electronically and ionically conducting membrane layer and a catalyst layer, characterized in that the electronically and ionically conducting membrane layer is formed from a material having a crystallite structure with a crystal size of about 1 to 100 nm, and a method for producing same.

Cheap thin film oxygen membranes

The present invention relates to composite material suitable for use as an electrode material in a solid oxide cell, said composite material consist of at least two non-miscible mixed ionic and electronic conductors. Further provided is a composite material suitable for use as an electrode material in a solid oxide cell, said composite material being based on (GdSr)FeCoOor (LnSr)FeCioO(s equal to 0.05 or larger) wherein Ln is a lanthanide element, Sc or Y, said composite material comprising at least two phases which are non-miscible, said composite material being obtainable by the glycine nitrate combustion method. Said composite material may be used for proving an electrode material in the form of at least a two-phase system showing a very low area specific resistance of around 0.1 &#x3a9;cmat around 600&#xb0; C.

Composite material suitable for use as an electrode material in a SOC

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 AlO, TiO, CrO, ScO, VO, TaO, MnO, NbO, CaO, BiO, LnO, MgCrO, MgTiO, CaAlO, LaAlO, YbCrO, ErCrO, NiTiO, NiCrO, 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.

Redox-stable anode

SOFC cell comprising a metallic supportending in a substantially pure electron conducting oxide, an active anode layerconsisting of doped ceria, ScYSZ, Ni&#x2014;Fe alloy, an electrolyte layerconsisting of co-doped zirconia based on oxygen ionic conductor, an active cathode layerand a layer of a mixture of LSM and a ferrite as a transition layerto a cathode current collectorof single phase LSM. The use of a metallic support instead of a Ni&#x2014;YSZ anode support increases the mechanical strength of the support and secures redox stability of the support. The porous ferrite stainless steel ends in a pure electron conducting oxide so as to prevent reactivity between the metals in the active anode which tends to dissolve into the ferrite stainless steel causing a detrimental phase shift from ferrite to austenite structure.

Growing community of inventors

Lynge, Denmark

Mogens Bjerg Mogensen