3 ms·

You may be thinking of molten salt batteries https://en.wikipedia.org/wiki/Molten-salt_battery https://en.wikipedia.org/wiki/Molten-salt_battery

• datameta 3y ago
  Apparently the non-rechargeable version is the primary power source of AAM, SAM, and cruise missiles. The interesting thing is before use the salt is solid and inert (without degradation in a long-term stockpile) but once triggered with a pyrotechnic primer they reach an operating temperature of 400-550 for the single use lifetime.
  • scotty79 3y ago
    It could be interesting for domestic use. Generating electricity and heat at the same time.
    • datameta 3y ago
      Yes! Utilizing the waste heat would go a long way in maximizing the efficiency of house HVAC.