When the researchers electrically charged a vessel with CO2 and the liquid metal, the carbon dioxide began to convert into small flakes of coal. The solid carbon flakes naturally detach from the liquid metal and fall to the bottom of the vessel, allowing for continual production of solid carbon from carbon dioxide. The end product can also hold an electrical charge, meaning it could be used as a supercapacitor after the process.
Carbon sequestration, the act of removing carbon dioxide from the atmosphere and converting it to a liquid or solid form, presents an appealing approach to mitigating climate change. As humans continue to emit carbon dioxide into the atmosphere, an inexpensive and large scale method to remove CO2 from the atmosphere would provide an ideal solution.
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