| abstract |
A rechargeable battery structure contains a positive electrode element, a negative electrode element, and a separator element disposed in-between. The characteristics are: (a) each element includes aflexible, self-supporting, polymeric matrix film composition; (b) each element is adhered to contiguous elements at its respective interfaces to form a unitary flexible laminate structure; and (c) the separator element composition is composed of a copolymer of vinylidene fluoride with about 8 to 20% by weight chlorotrifluoroethylene and is homogeneously distributed therein about 20 to 60% by weight of a compatible organic plasticizer for copolymer. |