Topsoe Fuel Cell A/s

Haldor Topsoe A/s

Technical University of Denmark

Sandvik Intellectual Property Ab

Jørgen Gutzon Larsen

Christian Olsen

Marie Drejer Jensen

Niels Christiansen

Peter Vang Hendriksen

Søren Linderoth

Mikael Schuisky

Lars Mikkelsen

Jens Ulrik Nielsen

Karsten Agersted Nielsen

Åsa Persson

Solid oxide electrolysis cell (SOEC) stack obtainable by a process comprising the use of a glass sealant with composition 50 to 70 wt % SiO2, 0 to 20 wt % Al2O3, 10 to 50 wt % CaO, 0 to 10 wt % MgO, 0 to 2 wt % (Na2o 1K2O), 0 to 10 wt % b2O3, and 0 to 5 wt % of functional elements selected from TiO2, ZrO2, ZrO2, F, P2O5, Mo03, FeO3, MnO 2, La&#x2014;Sr&#x2014;Mn&#x2014;O perovskite (LSM) and combinations thereof. Preferably, the sealant is a sheet of E-glass fibers with a composition in wt % of 52-56 SiO2, 12-16AL2O3, 16-25 CaO, 0-6MgO, 0-2 Na2+K2O, 0-10 B2O3, 0-1.5 TiO2, O-1F.

Sealing glass for solid oxide electrolysis cell (SOEC) stacks

The present invention provides a method of producing a multilayer barrier structure in a solid oxide cell stack, comprising the steps of: &#x2014;providing a metal interconnect; &#x2014;applying a first metal oxide layer on said metal interconnect; &#x2014;applying a second metal oxide layer on top of said first metal oxide layer; &#x2014;applying a third metal oxide layer on top of said second metal oxide layer; &#x2014;forming a solid oxide cell stack comprising said metal interconnect having said metal oxide layers thereon; and &#x2014;reacting the metal oxide in said first metal oxide layer with the metal of said metal interconnect during the SOC-stack initialization, and a solid oxide stack comprising an anode contact layer and support structure, an anode layer, an electrolyte layer, a cathode layer, a cathode contact layer, a metallic interconnect, and a multilayer barrier structure which is obtainable by the above method and through an initialization step, which is carried out under controlled conditions for atmosphere composition and current load, which depends on the layer composition facilitating the formation of the desired reaction products as a dense barrier layer without chromium species migrating to the air-electrode.

Method of producing a multilayer barrier structure for a solid oxide fuel cell

A solid oxide fuel cell stack obtainable by a process comprising the use of a glass sealant with composition 50-70 wt % SiO, 0-20 wt % AlO, 10-50 wt % CaO, 0-10 wt % MgO, 0-6 wt % (NaO+KO), 0-10 wt % BO, and 0-5 wt % of functional elements selected from TiO, ZrO, F, PO, MoO, FeO, MnO, La. Sr&#x2014;Mn&#x2014;O perovskite (LSM) and combinations thereof.

Fuel cell stack

Solid oxide fuel cell stack obtainable by a process comprising the use of a glass sealant with composition 50-70 wt % SiO, 0-20 wt % AlO, 10-50 wt % CaO, 0-10 wt % MgO, 0-2 wt % (NaO+KO), 5-10 wt % BO, and 0-5 wt % of functional elements selected from TiO, ZrO, F, PO, MoO, FeO, MnO, La&#x2014;Sr&#x2014;Mn&#x2014;O perovskite (LSM) and combinations thereof.

Solid oxide fuel cell stack having a glass sealant composition

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Bagsværd, Denmark

Jørgen Gutzon Larsen