Thermion-photoelectric-thermoelectricity combined type isotope cell and preparation method thereof

Abstract

A thermion-photoelectric-thermoelectricity combined type isotope cell comprises a radioactive source and an energy transition structure; two ends of the energy transition structure are respectively assembled with a cell anode and a cell cathode; the energy transition structure comprises an emission pole plate, a filling medium and a transparent charge collection plate arranged in sequence from inside-out and compactly stacked; the emission pole plate is arranged on the radioactive source side surface; the energy transition structure also comprises a first transparent insulation substrate, a photoelectric assembly, a second transparent insulation substrate and a thermoelectricity assembly arranged in sequence from inside-out and compactly stacked, wherein the first transparent insulation substrate is arranged on the transparent charge collection plate side surface; two ends of the photoelectric assembly are provided with a first electricity output electrode; two ends of the thermoelectricity assembly are provided with a second electricity output electrode; the energy transition structure side surface and cell anode and cathode on two ends are wrapped by a buffer pad; an inner package and an outer package heat radiation layers are arranged on the outer surface of the buffer pad. The thermion-photoelectric-thermoelectricity combined type isotope cell is high in energy conversion efficiency, large in output power, strong in environment applicability, good in work stability, and long in service life.

Description

technical field [0001] The invention belongs to the field of isotope batteries, and in particular relates to a thermionic-photoelectric-thermoelectric composite isotope battery; the invention also relates to a preparation method of a thermionic-photoelectric-thermoelectric composite isotope battery. Background technique [0002] Isotopes whose nuclear composition (or energy state) changes spontaneously while emitting radiation are called radioactive isotopes. Radioactive isotope batteries, referred to as isotope batteries, use energy-transducing devices to convert the energy of radiation released by radioactive isotopes into electrical energy output, so as to achieve the purpose of power supply. Due to the advantages of long service life, strong environmental adaptability, good working stability, no maintenance, and miniaturization, isotope batteries have been widely used in important fields such as military defense, aerospace navigation, polar exploration, biomedicine, and ...

AI Technical Summary

Problems solved by technology

[0004] The research results of the above four types of isotope batteries show that the low energy conversion efficiency is still the common feature of current isotope batteries

The development of static thermoelectric isotope batteries mainly benefits from the research and development at the national level, especially the design and manufacture of thermoelectric isotope batteries (radioisotope thermoelectric generators, RTG). The energy conversion efficiency is low. Even the enhanced multi-mission radioisotope thermoelectric generators (eMMRTG) recently reported by NASA has a conversion efficiency of less than 10% (http: / / www.jpl.nasa.gov / news / news.phpfeature=6646), so its scope of use is very limited, and the process of civilian use is relatively difficult

Radiation voltaic effect isotope batteries use semiconductor materials as energy conversion units, which can realize the miniaturization of isotope battery devices, expand the application range of isotope batteries, and have achieved certain research results with the rapid development of material science, but radiant volta There is a problem of performance degradation of semiconductor materials under long-term radiation irradiation, which reduces the service life of radiation-volt effect isotope batteries

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