Method for coating metallic interconnect of solid fuel cell

Abstract

Disclosed herein is a method for coating a metallic interconnect of a solid oxide fuel cell. The method for coating a metallic interconnect of a solid oxide fuel cell includes generating a cobalt compound solution using lithium cobalt oxide (LiCoO 2 ) that is an anodic material of a lithium ion battery; immersing the metal interconnect in a plating solution in which the generated cobalt compound solution is contained; and forming cobalt (Co) on the immersed metal interconnect by performing electroplating.

What is claimed is: 
     
         1 . A method for coating a metallic interconnect of a solid oxide fuel cell, comprising:
 generating a cobalt compound solution using lithium cobalt oxide (LiCoO 2 ) that is an anodic material of a lithium ion battery;   immersing the metal interconnect in a plating solution in which the generated cobalt compound solution is contained; and   forming cobalt (Co) on the immersed metal interconnect by performing electroplating.   
     
     
         2 . The method as set forth in  claim 1 , wherein the cobalt compound is cobalt sulfate (CoSO 4 ). 
     
     
         3 . The method as set forth in  claim 1 , wherein the generating of the cobalt compound solution is performed by dissolving the lithium cobalt oxide (LiCoO 2 ) with a sulfuric acid solution (H 2 SO 4 ). 
     
     
         4 . The method as set forth in  claim 1 , wherein the metallic interconnect is made of ferritic stainless steel. 
     
     
         5 . The method as set forth in  claim 1 , wherein the forming of the cobalt (Co) on the metallic interconnect includes:
 immersing a cobalt plate in the plating solution;   connecting a cathode to the immersed metallic interconnect and connecting an anode to the cobalt plate; and   performing electroplating by applying current.   
     
     
         6 . The method as set forth in  claim 1 , further comprising pre-treating removing impurities on a surface of the metal interconnect prior to immersing the metal interconnect in the cobalt compound (CoSO 4 ) solution. 
     
     
         7 . The method as set forth in  claim 6 , wherein the pre-treating is performed by a mechanical polishing process and a washing process using a washing solution. 
     
     
         8 . The method as set forth in  claim 1 , further comprising oxidizing the cobalt (Co) with the cobalt oxide (Co 3 O 4 ) by performing heat treatment on the metallic interconnect after the forming of the cobalt (Co) on the metallic interconnect. 
     
     
         9 . The method as set forth in  claim 1 , wherein the plating solution is made of the cobalt compound solution and distilled water.