| 摘要 |
<p>This invention provides a capacitor-type storage battery which has a short charge time, has a prolonged service life, and can realize high-output voltage. The storage battery comprises a metallic sheet (10) connected to a first terminal (22), a first metamaterial film (13) provided on the surface of the metallic sheet (10), and a first electroconductive film (12) provided on the first metamaterial film (13) and connected to a second terminal (21). The first metamaterial film (13) is a polycrystalline semiconductor film. In each crystal grain constituting the polycrystalline semiconductor film, the inside is of a first electroconductive type, and the part near the interface is of a second electroconductive type. An oxide insulating film may be provided on the surface of the metallic sheet (10).</p> |
