On: Korean nuclear fusion reactor achieves 100M°C for ...

[infogulch]

Yep. Besides the common exception of photovoltaics, the only other method I'm aware of is "Direct energy conversion" which generates electricity by catching fast moving charged ions. But this only works with select fusion fuels / reactions such as protium–boron-11.

[rainbowzootsuit → infogulch]

Thermoelectric generation in a RTG (radioisotope thermoelectric generator) on space probes like Voyager or Cassini are another.

https://solarsystem.nasa.gov/missions/cassini/radioisotope-t...

You can also do hobby-level usage like charging a cell phone with a candle.

https://www.instructables.com/Thermoelectric-USB-charger/