| 摘要 |
A polymer composition comprising at least one substantially non-conductive polymer binder and at least first and second electrically conductive fillers, wherein the first electrically conductive filler is comprised of particles having a void bearing structure, and the second electrically conductive filler is comprised of particles which are substantially spherical in shape. Preferably, the second electrically conductive filler comprises magnetite, either synthetic and/or naturally occurring, most preferably the magnetite particle size is around 0.2 micron. Preferably, the first electrically conductive filler is spiky nickel, more preferably nickel 123 or nickel 255. The polymer binder may be one of polyurethane, polyvinyl acetate, polyvinyl chloride, an acrylic polymer, natural rubber and silicone. Also disclosed is an electrical storage medium, wherein the medium is comprised of said polymer composition, and wherein the amount of charge stored by the medium may be tuned by changing the relative amounts of electrically conductive filler to non-conductive binder and/or adjusting the proportions of the first and second electrically conductive fillers. |
