Method for manufacturing metal electrode having transition metallic coating layer and metal electrode manufactured thereby

Abstract

It is to provide a method for manufacturing a metal electrode having transition metal oxide coating layer and a metal electrode manufactured thereby, which eliminates a contact resistance problem and simultaneously improves electric conductivity of the electrode by using a one body electrode, which is not requiring separate current collector and binder, and further maintains pseudo-capacitance from the redox reaction by coating the metal surface with a transition metal oxide.

1 - 4 . (canceled) 
     
     
         5 . A metal electrode having a transition metal oxide coating layer manufactured according to a method for manufacturing a metal electrode having a transition metal oxide coating layer comprising:
 preparing an anode aluminum oxide template or polymer casting mold having more than two micropores;   forming a metal substrate by sputtering a first metal at one side where the opening parts of the micropores of the aluminum template or the polymer casting mold are;   forming more than two metal nanowire arrays by filling a second metal into the micropores of the aluminum template or the polymer casting mold by using an electroplating method;   exposing the metal nanowire arrays arranged perpendicularly on the metal substrate by removing the aluminum template or the polymer casting mold; and   coating the side where the metal nanowire arrays are arranged on the metal substrate and the side where the metal nanowire arrays are exposed with a transition metal oxide by an immersion method.   
     
     
         6 . A metal electrode comprising:
 a metal substrate composed of a first metal;   more than two metal nanowire arrays arranged perpendicularly on the metal substrate and composed of a second metal; and   a transition metal oxide coating layer coated on the side where the metal nanowire arrays are arranged on the metal substrate and the side where the metal nanowire arrays are exposed.   
     
     
         7 . The metal electrode of  claim 6 , wherein the first metal and the second metal are identical. 
     
     
         8 . The metal electrode of  claim 6 , wherein the first metal and the second metal are independently selected from the group consisting of Cu, Ag, Au, Ni, Cr, Sn, Cd, Pb, Rd, Pt, Pd, In, Ru, Mn, Zn, Co and an alloy thereof. 
     
     
         9 . The metal electrode of  claim 6 , wherein the transition metal oxide oxide is selected from the group consisting of MnO 2 , RuO 2 , CoO and NiO. 
     
     
         10 . A supercapacitor comprising the metal electrode of  claim 5 . 
     
     
         11 . A supercapacitor comprising the metal electrode of  claim 6 .