| 摘要 |
A lithium-ion secondary cell is provided to remarkably improve a mechanical peel strength of heat fusion-bonding portions of a container as well as to improve a moisture permeability resistance, a sealing performance, a barrier property, a safety or the like of the container. A lead (3) for use with a lithium-ion secondary cell according to the present invention is sandwiched by heat fusion-bonding portions (2) of a container (5) so as to be exposed in the outside of the container (5) when the container (5) is sealed by heat fusion-bonding. The lead (3) is coated with a heat fusion-bonding seal material (1). This heat fusion-bonding seal material (1) has an excellent adhesion to the lead (3) rather than a material of a sealant layer (19). Also, in the lithium-ion secondary cell, an end portion (1a) on the outside portion in the longitudinal direction of the lead (3) in the layer made of the heat fusion-bonding seal material (1) is exposed from the end face of the container (5). Moreover, the lithium-ion secondary cell may have the lead (3) having a mesh structure. |
