Composite glass seal for a solid oxide electrolyser cell stack

摘要

The present invention provides a solid oxide cell stack, comprising: —at least two cells which each comprise a first electrode layer, an electrolyte layer, a second electrode layer, —gas passage ways, and—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: —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; —stacking at least two cells so as to form a cell stack including gas passage ways; and—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.

主权项

1. A solid oxide cell stack, comprising:
at least two cells which each comprise a first electrode layer, an electrolyte layer, a second electrode layer; gas passage ways; and sealing components, wherein the sealing components comprise a glass component and a component comprising a metal oxide or a metal oxide precursor, and wherein the component comprising the metal oxide or the metal oxide precursor is located at least in between the glass component and one of the gas passage ways, and wherein the component comprising the metal oxide or the metal oxide precursor is a porous layer with a porosity of from 20 to 90%.