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A sensitized thermal cell recovered using heat
- Matsushita, S., Araki, T., Mei, B., Sugawara, S., Inagawa, Y., Nishiyama, J., Isobe, T., Nakajima, A.
- Journal of materials chemistry A 2019 v.7 no.31 pp. 18249-18256
- batteries, chemistry, electric power, energy conversion, geothermal energy, germanium, heat, semiconductors, thermal energy
- You can find thermal energy everywhere in the world, including geothermal energy. Here we report an amazing battery that could supply power semi-permanently by simply burying the cell in a heat source and turning the switch on and off. We examined the discharge termination process of a sensitized thermal cell (STC), a new thermal energy conversion system for generating electrical power from heat previously reported by the authors. To observe this termination process, we constructed a new STC system using a narrow-bandgap semiconductor, germanium (Ge), and surprisingly found that the battery characteristics were restored after discharging by placing or burying the battery in a heat source. This discovery should bring us closer to solving global energy problems.