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 (LiCoO2) 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.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 10-2011-0097742, filed on Sep. 27, 2011, entitled “Method For Coating Metallic Interconnect Of Solid Oxide Fuel Cell”, which is hereby incorporated by reference in its entirety into this application.BACKGROUND OF THE INVENTION[0002]1. Technical Field[0003]The present invention relates to a method for coating a metallic interconnect of a solid oxide fuel cell.[0004]2. Description of the Related Art[0005]Due to the depletion of fossil fuel, new renewable energy related industries have been in the limelight.[0006]Among others, a fuel cell, which may replace the existing fossil fired power plant, can achieve higher energy efficiency, reduce sulfur oxides and carbon emissions. For this reason, various researches into the fuel cell have been conducted. In the case of the fuel cell, the continuous power generation may be performed under the assumption that fuel is continuously s...

AI Technical Summary

Benefits of technology

The present invention provides a method for coating a metallic interconnect of a solid oxide fuel cell that can prevent chromium from being volatized at high temperatures, secure oxidation stability at high temperatures, and use a low-cost material with excellent oxidation resistance and conductivity as the metallic interconnect.

Problems solved by technology

However, these alloys are very expensive and generate volatile chromium (Cr) under the high-temperature operation environment.

As described above, the chromium (Cr) is diffused to the cathode, which is a serious factor of hindering the normal electrochemical reaction of the fuel cell and reducing the performance thereof.

Meanwhile, stainless steel is more inexpensive than the ferritic Fe—Cr alloy and may form a large amount of oxide at high temperature while volatizing the chromium (Cr) contained therein, such that the stainless steel cannot be used as an interconnect of the fuel cell until now.

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