| abstract |
The present invention relates to small or large flexible devices for energy generation, storage, or both that generate power ranging from microwatts up to dozens of Watts. n The device is manufactured on substrates of cellulose or its derivatives acting as support and active element of the device. n This invention reports on the development of a single structure comprised by a substrate that works also as separator and electrolyte (1), anode (2), and cathode (3). The substrate is comprised by a matrix of natural, synthetic, or mixed cellulosic fibres that are processed by different techniques. The simple or additivated cellulose-based fibres allow the ionic exchange between anode and cathode, acting as electrolyte, and work simultaneously as physical support for the device. n In the present invention, the fibre matrix is coated on both side-faces, making use of thin film deposition techniques, with materials that act as anode or cathode according to the oxidation or reduction potentials of the used materials, including one or several layers of metal materials, metal oxides, or semiconductors. n The amount of energy supplied by the device depends on the type of fibres, on the anode and cathode materials, and also on the type of electrolytic solution, when used. |