Carbon dioxide (CO₂) can be harmful to the environment in large amounts but can be used in the production of fuels and other useful chemicals. Doing so isn't easy, though. Now, Yale researchers have developed a new way to combine electrocatalysis and plasma to efficiently and practically generate a number of valuable products from the gas. The results are published in Nature Catalysis.
Its pretty simple.
Hydrocarbons + oxygen + ignition releases energy, H20, and CO2.
Energy + CO2 + H20 can synthesize hydrocarbons.
There is plenty of interesting research how to do the latter - but it doesnt change the fact it just reverses a process we currently do by the tanker ship full. Why would anyone do that at scale?
It cant have a large scale application until we basically have free energy from some other source - and at that point, synthetic fuel is probably still a terrible way to store and use energy for pretty much everything except jet airplanes.