Russian Scientists Develop Advanced Atomic Battery

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Russian National University of Science and Technology MISiS scientists have presented an innovative autonomous power source, a compact atomic battery that can last up to 20 years. Due to the original 3D structure of the beta voltaic element, its dimensions have decreased by three times, the specific power has increased by 10 times, and the cost has decreased by 50%. The results have been published in the international scientific journal Applied Radiation and Isotopes.

The original patented microchannel 3D structure of a nickel beta-voltaic element is used in the device. Its peculiarity is that the radioactive element is applied on both sides of the so-called planar p-n junction, which simplifies the cell manufacturing technology, as well as the control of the reverse current that “steals” the battery power. The special microchannel structure provides an increase in the effective conversion area of the beta radiation by 14 times, which results in an overall increase of current.

The design allows to increase the efficiency of converting the energy released during the decay of a β-source into electricity by an order of magnitude, which in the future will reduce the cost of the source by about 50% due to the rational use of an expensive radioisotope

At the same time, the development will make it possible to increase the specific power by an order of magnitude, due to which the weight and dimensions of the batteries based on them will decrease three times while maintaining the required output power level.

The battery can be used in several functional modes: as an emergency power supply and temperature sensor in devices used at extreme temperatures and in hard-to-reach or completely inaccessible places: in space, under water, in high-altitude areas.

At the moment, the developers are completing the procedure for international patenting of the invention, and the device itself has already been recognized by foreign experts.

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