Abstract
The Plutonium-238 radioisotope thermoelectric generator (Plutonium-238 RTG) can work continuously without maintenance for a long time in harsh environment. It can supply power and thermal energy at the same time, which is an ideal energy source for deep space exploration missions. Firstly, the electricity power generation theory, basic structure, application history and development tendency of Plutonium-238 RTG are described in this paper. Then the key technologies for the development of Plutonium-238 RTG are presented, combined with the technology development of Plutonium-238 RTG in foreign countries and the requirements for deep space exploration. The above-mentioned key technologies are analyzed and discussed, providing a reference to the technology development and engineering application of Plutonium-238 RTG in China.
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