ELECTRODE FOR POWER STORAGE DEVICE, METHOD OF MANUFACTURING THE SAME AND CONNECTION METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To supply the voltage of a power storage device effectively without reducing by increasing the contact area and decreasing the resistance at a joint as compared with conventional joint by spot welding or bolting.

SOLUTION: A Zn layer 21 or a Zn alloy layer, an Ni layer 22, an Sn layer 23 or an Sn alloy layer are formed by plating on the connection terminal 10a of an anode electrode composed of Al. Consequently, soldering can be made to a Cu cathode electrode composed of a dissimilar metal of Al on the Sn layer 23 or Sn alloy layer, and joint strength of the Al anode electrode and Cu cathode electrode can be enhanced. Furthermore, since the contact area is increased as compared with conventional joint by spot welding or bolting, resistance at a joint is decreased and thereby voltage drop of the connection resistance in a power storage device can be reduced.

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