Reversible solid oxide fuel cell stack and method for preparing same

Abstract

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

1 . A reversible solid oxide fuel cell monolithic stack comprising:
 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 an interconnect and sealing layer on the porous metal containing layer; wherein the at least one porous metal containing layer hosts an electrode.   
     
     
         2 . The stack of  claim 1 , wherein the first component, the second component, or a combination thereof has a graded, porous structure. 
     
     
         3 . The stack of  claim 1 , wherein the first component, the second component, or a combination thereof comprises at least two porous metal containing layers. 
     
     
         4 . The stack of  claim 3 , wherein the first component, the second component, or a combination thereof has a graded, porous structure. 
     
     
         5 . A method of generating electricity comprising operating a turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 1 . 
     
     
         6 . The method of  claim 5 , wherein the turbine is operated under elevated pressure conditions of up to about 15 bar. 
     
     
         7 . A method of generating electricity comprising operating a turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 2 . 
     
     
         8 . The method of  claim 7 , wherein the turbine is operated under elevated pressure conditions of up to about 15 bar. 
     
     
         9 . A method of generating electricity comprising operating a turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 3 . 
     
     
         10 . The method of cairn  9 , wherein the turbine is operated under elevated pressure conditions of up to about 15 bar. 
     
     
         11 . A method of generating electricity comprising operating a turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 4 . 
     
     
         12 . The method of  claim 11 , wherein the turbine is operated under elevated pressure conditions of up to about 15 bar. 
     
     
         13 . A turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 1 . 
     
     
         14 . A turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 2 . 
     
     
         15 . A turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 3 . 
     
     
         16 . A turbine comprising the reversible solid oxide fuel cell monolithic stack of  claim 4 .