Simple device converts CO2 into energy

British researchers have developed a method that can convert CO2 into energy. A relatively simple device primarily makes use of temperature differences.

The idea of ​​converting CO₂ into usable energy and fuel could be a crucial step forward for the future colonization of Mars. Researchers at the University of British Columbia (UBC) have now developed a method that should make exactly that possible. To do this, they use so-called thermogenerators, which generate electricity through temperature differences.

This energy is intended to power a special electrolysis device that converts the CO2 into carbon monoxide (CO). This is a chemical building block for the production of fuel. The process is said to be relatively simple and takes advantage of large temperature differences.

Convert CO2 into energy – through electrolysis

Thermogenerators convert heat differences into electrical energy. In the laboratory experiment, the research team simulated these conditions using a hot plate and an ice bath. As soon as the temperature difference between the two surfaces is at least 40 degrees Celsius, the generator can supply enough electricity to operate the CO₂ electrolysis device.

This device converts the CO₂ into CO, which in turn serves as the basis for further chemical reactions and the production of fuel. The technology could even be useful on Mars. Because there are large amounts of CO₂ there and the temperature differences are extremely high.

Biodom could offer human-friendly living space

A possible application scenario for the technology would be so-called biodomes. These could serve as closed habitats for the Mars colonists. The interior of such a biodome would have to be heated by a system to a constant, life-friendly temperature. The outside temperatures on Mars are often well below zero degrees Celsius.

Thermal generators could use this difference to provide continuous energy to convert CO₂ into useful materials. The Martian atmosphere consists of 95 percent CO₂, which makes the process particularly efficient and cost-effective. Not only could this provide fuel for return flights to Earth, but it could also be used to produce plastic and other materials that are important for construction and everyday life on Mars.

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