Catalyst for water electrolysis using fluorine-doped tin oxide support and method for manufacturing the same

Abstract

The present invention relates to a method for manufacturing a catalyst for water electrolysis using a fluorine-doped support, comprising: preparing a support; doping fluorine onto the support; and forming a metal particle catalyst on a surface of the fluorine-doped support, and to a catalyst for water electrolysis manufactured thereby. The present invention uses a dry plasma process to omit the cleaning process and can easily form fluorine doping on the surface without causing structural collapse of the support material.

What is claimed is: 
     
         1 . A method for manufacturing a catalyst for water electrolysis using a fluorine-doped support, comprising:
 preparing a support;   doping fluorine onto the support; and   forming a metal particle catalyst on a surface of the fluorine-doped support.   
     
     
         2 . The method of  claim 1 , wherein the doping of fluorine onto the support is performed by dispersing the support in a solvent and adding a dopant precursor including a fluorine source. 
     
     
         3 . The method of  claim 2 , wherein the dopant precursor including the fluorine source is boron trifluoride etherate (C 4 H 10 BF 3 O) or ammonium fluoride (NH 4 F). 
     
     
         4 . The method of  claim 1 , wherein the doping of fluorine onto the support is performed by plasma treating a source gas including the fluorine onto the surface of the support. 
     
     
         5 . The method of  claim 2 , wherein the support is a nanoparticle-formed powder, a nanostructure-formed thin film, or a substrate. 
     
     
         6 . The method of  claim 2 , wherein the support is a porous carbon material selected from carbon black, carbon nanotubes, carbon fibers, or fullerenes. 
     
     
         7 . The method of  claim 6 , wherein the preparing of the support further includes a preliminary treatment of the surface of the support. 
     
     
         8 . The method of  claim 7 , wherein the preliminary treatment of the surface of the support is performed by an oxidation process of the support. 
     
     
         9 . The method of  claim 8 , wherein the oxidation process includes one of electrochemical oxidation, oxygen plasma oxidation, or acid treatment. 
     
     
         10 . The method of  claim 2 , wherein the support is tin oxide. 
     
     
         11 . The method of  claim 10 , wherein the preparing of the support further includes one or more preliminary treatments of the surface of the support, the preliminary treatment including chemical surface treatment, plasma treatment, and thermal surface treatment of the support. 
     
     
         12 . The method of  claim 2 , wherein the metal includes precious metals, rare earth metals, and transition metals. 
     
     
         13 . The method of  claim 12 , wherein the transition metal is one or more selected from Ir, Pt, Pd, Os, Ru, Co, Fe, Mo, W, Cr, and Ni, and alloys. 
     
     
         14 . The method of  claim 2 , wherein the forming of metal particle catalysts on the surface of the fluorine-doped support includes:
 preparing a solution in which the fluorine-doped support is dispersed;   adding and mixing a precursor of the metal into the dispersed solution;   adding a reducing agent to the mixed solution to carry out a reduction reaction; and   filtering the reduced solution to collect powder, and heat treating the collected powder.