| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode terminal 3 for a sealing plate equipped with a surface state with an improved jointing property so as to exert an excellent sealing performance, by concretely defining the surface state of the electrode terminal 3 effective in improving a jointing property as well as a sealing property between a sealing plate main body 2 and the electrode terminal 3. SOLUTION: Of the electrode terminal 3 for the sealing plate integrated with the sealing plate main body made of a polymer material by insertion molding with a chemical treatment given on a whole or a part of at least a position out of its surface in contact with the sealing plate main body 2, a size of surface roughness on the electrode terminal 3 surface where the chemical treatment is applied is to be Ra 0.05μm or more, or preferably, Ra 0.1μm or more, and a diameter of a concave part formed on the electrode terminal 3 surface by the chemical treatment is to beψ4μm or more at the maximum andψ1μm or more in the average. COPYRIGHT: (C)2005,JPO&NCIPI
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