US Pat. No. 10,770,735

PROTECTION ARRANGEMENT AND METHOD OF SOLID OXIDE CELLS

ELCOGEN OY, Vantaa (FI)

1. Protection method of solid oxide cells, in which method is arranged gas flows in the cell by at least two cell structure plates made of metal, wherein in the method is formed high temperature thermal flame to which liquid precursor is fed to form metal oxide compounds, said liquid precursor comprising metal ions, which form the desired coating with oxygen, said liquid precursor is formed from at least one of metal nitrates and metal acetates, and from solvent formed of at least one of organic compounds and water in which solvent at least one of metal nitrates and metal acetates are dissolved, and from organic compounds which stabilize the liquid precursor through the chelation resulting in a more homogenous mixture of metal complex, and from organic compounds that are exothermic above characteristic energy threshold level, and from organic compounds that form gases as reaction product and therefore further increase the atomization of the liquid precursor, and is formed the metal oxide compound material on the at least two cell structure plates made of metal from liquid precursor fed into thermal flame having average gas velocity over 200 m/s, and in the method controlling a flow rate at least of fuel, oxygen and liquid precursor in order to regulate thermal characteristics of the thermal spraying and to improve atomization of the precursor.

US Pat. No. 10,056,624

SEALING ARRANGEMENT OF SOLID OXIDE CELL STACKS

ELCOGEN OY, Vantaa (FI)

1. A sealing arrangement for a solid oxide cell stack, where each cell includes a fuel side, an oxygen rich side, and an electrolyte element having an electrolyte layer between the fuel side and the oxygen rich side, the cells being arranged to form a stack, and the solid oxide cell stack includes in repetitious structures a flow field plate for each cell to arrange flows in the cell, a flow distribution area on the flow field plate as an area to which fuel feed flow is guided, a flow outlet area on the flow field plate, a flow area on the flow field plate, and flow orifices open to the flow distribution area and to the flow outlet area, wherein the sealing arrangement comprises:at least one gasket structure, which is located between the flow field plate and the electrolyte element, and said at least one gasket structure is located between the flow field plates of said repetitious structures;
first sealing layers, which are in contact with the flow field plate and the gasket structure, the first sealing layers covering over a selected area of the flow field plate and over a first selected area of the gasket structure; and
second sealing layers in contact with the electrolyte element and the gasket structure, the second sealing layers covering over a selected area of the electrolyte element and over a second selected area of the gasket structure, wherein the first selected area of the gasket structure is a different area than the second selected area of the gasket structure.

US Pat. No. 10,535,883

PROTECTION ARRANGEMENT AND METHOD OF SOLID OXIDE CELLS

ELCOGEN OY, Vantaa (FI)

1. A protection arrangement of solid oxide cells, each solid oxide cell having at least two fuel cell structure plates made of metal to arrange gas flows in the cell, and an active electrode structure, which includes an anode side, a cathode side, and an electrolyte element between the anode side and the cathode side, wherein the protection arrangement comprises:a first metal oxide coating on a metallic structure in a solution precursor thermal spraying being from an at least one of nitrates and acetates based substances fed into a thermal flame by using combusting hydrocarbons as a fuel; and
at least one other metal oxide coating formed at least partly simultaneously with the first metal oxide coating from a liquid precursor formed from the at least one of nitrates and acetates based substances fed into the thermal flame, the at least one other metal oxide coating bonded with the first metal oxide coating being made of material with electrical conductivity greater than 100 S/cm, and the metal oxide coatings being mainly formed of particles with a size range of 10 to 500 nm due to effective droplet atomization during the spraying process.

US Pat. No. 10,559,836

METHOD AND ARRANGEMENT FOR DISTRIBUTING REACTANTS INTO A FUEL CELL OR INTO AN ELECTROLYZER CELL

ELCOGEN OY, Vantaa (FI)

1. A solid oxide fuel cell including a fuel flow guiding arrangement, the solid oxide fuel cell having a fuel side, an air side, and an electrolyte element between the fuel side and the air side, wherein the arrangement comprises:a flow field plate for each cell to arrange air flow on a first side of the flow field plate and fuel flow on a second side of flow field plate;
a flow distribution area on the flow field plate;
a flow outlet area on the flow field plate;
a side gas channel of the fuel cell located perpendicularly to a main flow direction of the fuel flow channel area for guiding fuel feed flow to the fuel distribution area, the flow distribution area being located outside of an electrochemically active electrolyte element area;
an air inflow and outflow to and from respectively, an electrolyte element in one of the same flow direction and opposite flow direction with the main fuel flow;
a flow adjusting structure for turning about 90° at least one of a fuel feed flow on the flow distribution area and fuel outlet flow on the flow outlet area, the flow adjusting structure including flow restriction orifices, each having a geometrical shape defining fuel flow volume of parallel fuel flow channels in order to equalize flow distribution on the electrolyte element, the flow adjusting structure being located outside of the electrochemically active electrolyte element area; and
the flow adjusting structure having at least partly an elliptical shape as said at least one geometrical shape, wherein the solid oxide fuel cell is configured to operate at a temperature range of 500°-1000° C.