TAB LEAD, METHOD FOR MANUFACTURING TAB LEAD, AND ELECTROCHEMICAL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a tab lead or the like, capable of securing more firm sealing performance at a draw-out part of a tab lead of an electrochemical device.SOLUTION: A tab lead for an electrochemical device includes a lead conductor made of metal and a seal material made of an insulating resin. The tab lead has an arithmetic average roughness Ra at least at a part in contact with the seal material on the surface of the lead conductor of 0.1 μm or more and 0.3 μm or less. The lead conductor is preferably obtained by the electrodeposition of aluminum on the surface of a metal base material in an electrolyte containing a molten salt.