Electrode transfer method and electrode positioning jig

Abstract

An electrode transfer method for transferring ring-shaped electrodes to a solid polymer electrolyte membrane includes: a first subsidiary material installation step of installing a shaft member through a subsidiary material; an anode electrode positioning jig installation step of inserting the shaft member through an anode electrode positioning jig; an anode electrode installation step of installing an anode electrode; a solid polymer electrolyte membrane installation step of removing the positioning jig and installing a solid polymer electrolyte membrane; a cathode electrode positioning jig installation step of inserting the shaft member through a cathode electrode positioning jig; a cathode electrode installation step of installing a cathode electrode; a second subsidiary material installation step of removing the positioning jig and installing the shaft member through another subsidiary material; a shaft member removal step of pulling the shaft member out, and a hot press step of heating and pressing the electrodes from outside.

What is claimed is: 
     
         1 . An electrode transfer method for transferring electrodes to a solid polymer electrolyte membrane, the electrodes including a ring-shaped anode electrode and a ring-shaped cathode electrode that each have a through hole at a center of the electrode, the method comprising:
 a first subsidiary material installation step of installing a subsidiary material by insertion of a shaft member through the subsidiary material;   an anode electrode positioning jig installation step of inserting the shaft member through an anode electrode positioning jig;   an anode electrode installation step of installing the anode electrode around the anode electrode positioning jig;   a solid polymer electrolyte membrane installation step of removing the anode electrode positioning jig and installing the solid polymer electrolyte membrane on the anode electrode and around the shaft member;   a cathode electrode positioning jig installation step of inserting the shaft member through a cathode electrode positioning jig on the solid polymer electrolyte membrane;   a cathode electrode installation step of installing the cathode electrode around the cathode electrode positioning jig;   a second subsidiary material installation step of removing the cathode electrode positioning jig and installing another subsidiary material by insertion of the shaft member through the another subsidiary material;   a shaft member removal step of pulling the shaft member out; and   a hot press step of, after the shaft member removal step, heating and pressing the electrodes sandwiched between the subsidiary materials from outside the subsidiary materials.   
     
     
         2 . The method of  claim 1 , wherein
 the subsidiary materials each include a cushioning material and a mold releasing material.   
     
     
         3 . An electrode positioning jig for use in the electrode transfer method of  claim 1 , the electrode positioning jig comprising:
 the anode electrode positioning jig; the cathode electrode positioning jig; and the shaft member,   the anode electrode positioning jig and the cathode electrode positioning jig each having a through hole at a center of the jig, the shaft member being concentrically insertable through the through holes.   
     
     
         4 . An electrode positioning jig for use in the electrode transfer method of  claim 2 , the electrode positioning jig comprising:
 the anode electrode positioning jig; the cathode electrode positioning jig; and the shaft member,   the anode electrode positioning jig and the cathode electrode positioning jig each having a through hole at a center of the jig, the shaft member being concentrically insertable through the through holes.   
     
     
         5 . The electrode positioning jig of  claim 3 , wherein
 the anode electrode positioning jig has a greater thickness than the anode electrode, and   the cathode electrode positioning jig has a greater thickness than the cathode electrode.   
     
     
         6 . The electrode positioning jig of  claim 4 , wherein
 the anode electrode positioning jig has a greater thickness than the anode electrode, and   the cathode electrode positioning jig has a greater thickness than the cathode electrode.