asimovcomic.com
Creating non fissile materials that conduct electricity. Got it to roughly .5 kg at 32,356 kJ/kg. About 9 kWh. It’ll last about 10,000 years. It’ll decay to non radioactive materials wholly unless there’s bad atoms within the build.
Basic data. Then you can recycle the crystals i designed in it by cutting them out, while the rest of the crystals have decayed into stable non reactive isotopes during the end of their life time, …