Ceres Intellectual Property Company Limited

Mike Lankin

Robert Leah

Adam Bone

Robin Pierce

Mahfujur Rahman

Carl Matthews

Ahmet Selcuk

A method of manufacturing a layer of crystalline ytterbium doped zirconia on a substrate is disclosed. The method includes depositing a solution including precursor metal salts of the ytterbium doped zirconia onto a surface of the substrate, wherein the surface is a metallic or a ceramic surface. The solution is dried to form a film of the precursor metal salts on the surface. The film of the precursor metal salts is heated to decompose it to form an ytterbium doped zirconia. The previous steps may optionally be repeated. The film(s) are fired in order to form the layer of crystalline ytterbium doped zirconia. The ytterbium doped zirconia has a formula:([YbM]O)(ZrO)wherein M is a metallic dopant ion; z is in the range of 0.03 to 0.13; and x is in the range of 0.05 to 1.

Layer

A process for forming an electrolyte for a metal-supported solid-oxide fuel cell, the process comprising:

Electrolyte forming process for a metal-supported solid-oxide fuel cell

A process for forming an electrolyte for a metal-supported solid-oxide fuel cell, the process comprising: a. combining a doped-ceria powder with a sintering aid and solvent to form a slurry; b. applying the slurry to an anode layer; c. drying to form a green electrolyte; and d. firing the green electrolyte to form a sintered electrolyte; wherein the slurry in step b. comprises doped-ceria powder with a physical property selected from bimodal particle size distribution, a BET surface area in the range 15-40 m/g, a spherical morphology, or combinations thereof together with an electrolyte obtained by the process, a fuel cell and fuel cell stack, comprising the electrolyte, and the use of the fuel in the generation of electrical energy.

Electrolyte forming process

A process for forming a metal supported solid oxide fuel cell, the process comprising the steps of: a) applying a green anode layer including nickel oxide, copper oxide and a rare earth-doped ceria to a metal substrate; b) firing the green anode layer to form a composite including oxides of nickel, copper, and a rare earth-doped ceria; c) providing an electrolyte; and d) providing a cathode. Metal supported solid oxide fuel cells comprising an anode a cathode and an electrolyte, wherein the anode includes nickel, copper and a rare earth-doped ceria, fuel cell stacks and uses of these fuel cells.

Metal supported solid oxide fuel cell

A process for forming a metal supported solid oxide fuel cell is provided. The process can include the steps of: a) applying a green anode layer including nickel oxide and a rare earth-doped ceria to a metal substrate; b) prefiring the anode layer under non-reducing conditions to form a composite; c) firing the composite in a reducing atmosphere to form a sintered cermet; d) providing an electrolyte; and e) providing a cathode; wherein the reducing atmosphere comprises an oxygen source, a metal supported solid oxide fuel cell formed during this process, fuel cell stacks and the use of these fuel cells.

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Horsham, United Kingdom

Mike Lankin