According to foreign media reports, the exploration of advanced materials that can advance battery technology to a higher level has brought scientists to some imaginative places, including designs inspired by the human spine and the creation of key components into nano-chain structures. Other designs. Another example involves the production of too much of an element in carbon dioxide. Scientists have now studied it as a battery capable of performing 500 charge and discharge cycles.
Since its energy density is expected to be more than seven times that of today's typical lithium-ion designs, people are very interested in the development of lithium-carbon dioxide batteries. Past research has yielded some gratifying results. The breakthrough we saw from MIT last year is a recent example.
The team of mechanical engineers first proposed a new type of electrochemical reaction that increases the discharge voltage and eventually converts carbon dioxide into solid carbonate materials. The researchers pointed out a shortcoming of the battery design, which is that the battery can only be charged and discharged for 10 cycles before failure.
A team at the University of Illinois at Chicago (UIC) now claims to have developed the first fully charged lithium-carbon dioxide battery. The technical problems that the researchers overcome focused on the tendency of these batteries to quickly fail due to carbon deposition on the catalyst during charging. To date, this trend has plagued similar efforts.
The first author of the paper, Alireza Ahmadiparidari, a graduate student of the UIC School of Engineering, said: "The accumulation of carbon not only prevents the active site of the catalyst and prevents the diffusion of carbon dioxide, but also triggers the decomposition of the electrolyte in the charged state."
The researchers found that one way to solve this problem is to introduce new materials to enhance the battery's ability to recycle materials again and again. This means integrating molybdenum disulfide nanoflakes into the cathode catalyst and using a new hybrid electrolyte made of ionic liquid and dimethyl sulfoxide.
The researchers said that this combination resulted in the battery output of a composite material composed of multiple components rather than a single product, thus seeing that carbon naturally mixed into the recycling process, rather than forming a troublesome accumulation on the battery catalyst itself. So many, they can charge the prototype battery in 500 charge and discharge cycles.
Salehi-Khojin, Associate Professor of Mechanical and Industrial Engineering, said: "Our unique material combination helps to create the first carbon-neutral lithium-carbon dioxide battery with higher efficiency and longer cycle life, which allows it to be used for advanced energy storage In the system. "
This research is still a long way from commercial production. However, it does provide another proof-of-concept energy storage device for the next generation of batteries, and another possible way we might one day convert carbon dioxide into more useful.
The research was published in the journal Advanced Materials.
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