Electrochemical element and method for manufacturing same

Abstract

An electrochemical element is provided. The electrochemical element may comprise an anode, a cathode on the anode, and an anion exchange membrane disposed between the cathode and the anode and including cellulose and chitosan.

1 . An electrochemical element comprising:
 an anode electrode;   a cathode electrode on the anode electrode; and   an anion exchange membrane disposed between the cathode electrode and the anode electrode and including cellulose and chitosan.   
     
     
         2 . The electrochemical element of  claim 1 , wherein the cellulose of the anion exchange membrane comprises bacterial cellulose. 
     
     
         3 . The electrochemical element of  claim 2 , wherein the anion exchange membrane comprises a network formed by base complex fibers combined with the cellulose and the chitosan. 
     
     
         4 . The electrochemical element of  claim 2 , wherein the anion exchange membrane comprises:
 a first complex fiber in which a surface of the base complex fiber combined with the cellulose and the chitosan is oxidized; and   a second complex fiber, in which a surface of the base complex fiber is bound to a first functional group having nitrogen.   
     
     
         5 . The electrochemical element of  claim 4 , wherein the first complex fiber and the second complex fiber are crosslinked. 
     
     
         6 . The electrochemical element of  claim 1 , wherein the anode electrode and the cathode electrode comprise the same material. 
     
     
         7 . The electrochemical element of  claim 1 , wherein at least one of the anode electrode and the cathode electrode comprise a plurality of fibrillated fibers formed of a compound of copper, phosphorus and sulfur. 
     
     
         8 . A water electrolysis cell comprising the electrochemical element according to  claim 1 . 
     
     
         9 . A fuel cell comprising the electrochemical element according to  claim 1 . 
     
     
         10 . An anion exchange membrane for a water electrolysis cell or a fuel cell, wherein the anion exchange membrane comprises a network formed by base complex fibers containing chitosan. 
     
     
         11 . The anion exchange membrane of  claim 10 , wherein the base complex fibers comprise bacterial cellulose, and the chitosan bound to the bacterial cellulose. 
     
     
         12 . The anion exchange membrane of  claim 10 , wherein the base complex fibers comprise a first complex fiber in which a surface of the base complex fiber combined with the cellulose and the chitosan is oxidized, and a second complex fiber in which a surface of the base complex fiber is bound to a first functional group having nitrogen, wherein a ratio of the first complex fiber is more than 30 wt % and less than 70 wt %, and
 a ratio of the second complex fiber is less than 70 wt % and more than 30 wt %.   
     
     
         13 . The anion exchange membrane of  claim 10 , wherein an XPS analysis result comprises peak values corresponding to pyrrolic, quaternary, and oxidized N in an N1s spectrum. 
     
     
         14 . The anion exchange membrane of  claim 10 , wherein the anion exchange membrane comprises a mixture of a crystalline phase and an amorphous phase. 
     
     
         15 . The anion exchange membrane of  claim 10 , wherein the anion exchange membrane has an ion conductivity of OH −  ions controlled according to the content of the chitosan. 
     
     
         16 . The anion exchange membrane of  claim 10 , wherein the anion exchange membrane comprises a ratio of the chitosan in an amount of more than 30 wt % and less than 70 wt %.