A rechargeable lithium battery and carbon dioxide prototype was developed by a group of researchers at the University of Illinois in Chicago. Carbon dioxide batteries are very interesting because they have a density much higher than the classic lithium-ion batteries found in all mobile devices around the world.
The prototype developed by the researchers can perform up to 500 charge cycles in a row, which makes these batteries, which for years have been very attractive in a “futuristic” key, but much less so in terms of practical level, back to a state on the crest of the wave.
In fact, it could be the first truly efficient lithium carbon dioxide battery, as Amin Salehi-Khojin, Professor of Mechanical and Industrial Engineering at the University of Illinois and one of the researchers involved in this project, points out.
The reasons that led to the failure of this battery in the past lie in the charging and recharging cycle: Lithium carbonate and carbonate are produced during charging. The latter accumulates in the catalyst, leading to electrolyte decomposition, catalyst clogging and carbon dioxide diffusion.
However, this new prototype envisages the use of molybdenum disulphide as a catalyst together with a hybrid electrolyte containing carbon during the cyclic process. This is followed by the production of a single material, which makes recycling more efficient.
The same Salehi-Khojin believes that thanks to this new prototype, the lithium carbon dioxide battery can finally be used in advanced energy storage systems, for example for vehicles, and perhaps even in the most common devices.
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