Researchers have introduced a prototype of the first lithium-carbon dioxide battery, which can be fully recharged over 500 consecutive cycles.
Lithium carbon dioxide batteries areattractive technology because they can potentially store up to seven times more energy than ordinary lithium-ion ones. However, in the process of their work, carbon is formed that does not recycle and gradually accumulates on the catalyst, which blocks its active centers, prevents the diffusion of carbon dioxide and starts decomposition of the electrolyte in a charged state. Ultimately, this leads to the failure of the device.
In their experimental battery, scientists fromThe University of Illinois at Chicago used new materials to stimulate the careful processing of not only lithium carbonate, but also carbon. They used molybdenum disulfide as a cathode catalyst in combination with a hybrid electrolyte to help incorporate carbon into the cyclic process.
During the tests, the battery worked effectively for 500 cycles with a fixed capacity of 500 mAh / g, which is much higher than previous designs.
This combination of materials forms a singlea multicomponent composite rather than individual products, which makes recycling more efficient. According to the team, thanks to the new combination, the prototype worked quite efficiently and for a long time so that this technology could be used in modern energy storage systems.
Researchers began to pay more attention to developments in this field, as literally in August another team introduced the first iron-ion battery.</p>