| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrode hard to cause a trouble, such as creasing, folding or breaking a collector even in the case of performing a press work, of which the outer shape is retained to such an extent that no obstacle is presented to the battery construction.SOLUTION: According to the present invention, an electrode 10 for a secondary battery is provided, which comprises: a collector 12; and an active material layer 14a fixed on the collector. The electrode has a current collecting part 16 on a part of the collector 12, where the active material layer 14a is not formed. In the current collecting part 16, a step-easing layer 18 is provided. The step-easing layer meets the following conditions: (1) the step-easing layer has a thickness substantially the same as that of the active material layer 14a; (2) the step-easing layer is provided in a region 30% or less of the total superficial area of the current collecting part 16; and (3) The thermal deformation temperature is 87°C or less when a load which is measured in accordance with JIS K7191(2007) is 18.6 kgf/cm. In another aspect, the present invention provides a secondary battery including an electrode 10. |
