Secondary cell and method for preparation thereof
AssigneeSony Corporation
InventorsTakahiro Endo, Koichiro Kezuka, Tsuyonobu Hatazawa
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Abstract
A secondary cell exhibiting superior flexibility and cell characteristics. This secondary cell has an anode, a polymer electrolyte layer and an anode, layered together. At least one of the anode and the anode is formed by a sheet-like electrode comprised of a current collector, composed mainly of carbon fibers, and an electrode mixture carried thereon. A metal foil is provided in sliding contact with the sheet electrode on the opposite side of the sheet electrode with respect to the polymer electrolyte layer, and an electrode terminal is taken from said metal foil. The cell device is sealed under a reduced pressure by an exterior member.
Claims14
A secondary cell having a cathode, a polymer electrolyte layer and an anode, layered together, wherein
- at least one of the cathode and the anode is formed by a sheet-like electrode comprised of a current collector, composed mainly of carbon fibers, and an electrode mixture carried thereon;
- a metal foil is provided in sliding contact with the sheet electrode on the opposite side of the sheet electrode with respect to the polymer electrolyte layer, an electrode terminal being taken from said metal foil;
- and wherein
- said cell device is sealed under a reduced pressure by an exterior member.
A method for the preparation of a secondary cell comprising:
- sequentially layering a metal foil, from which an electrode terminal is derived, a first electrode, made up of a first current collector, composed mainly of carbon fibers, and an electrode mixture, carried by the first current collector, a polymer electrolyte layer, and a second electrode, made up of a second current collector, carrying a layer of an active material thereon, with the metal foil being in sliding contact with the first electrode, to form a cell device;
- and
- sealing the cell device under a reduced pressure with an exterior member.
Dependencies are inferred from the claim text.