Electrochemical strip and manufacturing method thereof

Abstract

An electrochemical strip is disclosed. The electrochemical strip includes a substrate and an electrode deposited on the substrate. The electrode includes a conductive paste layer, a first metal layer, a second metal layer, a third metal layer, and a fourth metal layer. The conductive paste is made of a material selected from the group consisting of copper paste, nickel paste, silver paste, and silver-carbon paste. The first metal layer is made of a group VIII metal. The second metal layer is made of nickel. The third metal layer is made of a group VIII metal. The fourth metal layer is made of a material selected from the group consisting of palladium, gold, and platinum.

What is claimed is: 
     
         1 . A manufacturing method of an electrochemical strip, comprising steps of:
 providing a substrate; and   disposing an electrode layer on the substrate, which comprising steps of:
 printing a conductive paste layer on the substrate; 
 printing a carbon layer on a first region of the conductive paste layer; 
 etching a second region excluding the first region of the conductive paste layer; 
 chemically plating a first metal layer on the second region of the conductive paste layer; 
 chemically plating a second metal layer on the first metal layer; 
 chemically plating a third metal layer on the second metal layer; and 
 chemically plating a fourth metal layer on the third metal layer; 
 wherein the first metal layer is made of a group VIII metal, the second metal layer is made of nickel (Ni), the third metal layer is made of a group VIII metal, and the fourth metal layer is made of a metal selected from the group consisting of palladium (Pd), gold (Au) and platinum (Pt). 
   
     
     
         2 . The manufacturing method of the electrochemical strip as recited in  claim 1 , wherein the step of providing the substrate is providing a material selected from the group consisting of polyethylene terephthalate (PET), polycarbonate (PC), polyimide, glass fiber and phenolic resin. 
     
     
         3 . The manufacturing method of the electrochemical strip as recited in  claim 1 , wherein the step of printing the conductive paste layer on the substrate is printing a silver paste on the substrate. 
     
     
         4 . The manufacturing method of the electrochemical strip as recited in  claim 1 , wherein the step of chemically plating the first metal layer on the conductive paste layer is chemically plating a layer of palladium (Pd) on the conductive paste layer. 
     
     
         5 . The manufacturing method of the electrochemical strip as recited in  claim 1 , wherein the step of chemically plating the third metal layer on the second metal layer is chemically plating a layer of palladium (Pd) on the second metal layer. 
     
     
         6 . The manufacturing method of the electrochemical strip as recited in  claim 1 , wherein the step of chemically plating the fourth metal layer on the third metal layer is chemically plating a layer of gold (Au) on the third metal layer. 
     
     
         7 . The manufacturing method of the electrochemical strip as recited in  claim 1 , wherein the step of chemically plating the fourth metal layer on the third metal layer is chemically plating a layer of palladium (Pd) on the third metal layer. 
     
     
         8 . The manufacturing method of the electrochemical strip as recited in  claim 1 , further comprising a step of coating an electrochemically reacting substance on the fourth metal layer.