RADIOISOTOPE SOLID-STATE SELF-CHARGING CAPACITOR Russian patent published in 2023 - IPC G21H1/00 

FIELD: solid-state microelectronics.

SUBSTANCE: invention relates to capacitors with a solid electrolyte, which can be used in various portable electronic devices as autonomous power sources. A self-charging radioisotope capacitor is made of two working electrodes oriented with solid electrolyte layers and conductive layers towards each other, with one common source of beta radiation located between them. The working electrodes are combined into one common electrical circuit by an external conductor, and the conductive layers of the second electrodes are combined into another electrical circuit. In this case, the first collector electrode is made in the form of an electrically conductive substrate with a solid electrolyte, and the second one is in the form of a thin film deposited on the surface of the solid electrolyte layer containing an additional electrode, with a source of beta radiation in a conductive matrix contacting with the second electrode. A layer of Li₃PO₄ with a layer thickness of 0.1 to 2 microns is used as a solid electrolyte, and radionuclides H-3, Ni-63, Sr-90, Ts-99 or other beta-emitting radionuclides are used as beta-emission source.

EFFECT: increase in the duration of operation of the radioisotope capacitor with the possibility of charging without an external source.

3 cl, 4 dwg