For those who thought the room for improvement for lithium batteries was narrow, the latest innovation from the Samsung Institute for Advanced Technology (SAIT) will change your mind. With it, the experts have found a new material that increases the capacity by 45%, in addition to multiplying the charging speed by five compared to conventional batteries. The secret? What its creators have called ‘Graphene balls’.
As Samsung explains, which has had the support of the Faculty of Chemical and Biological Engineering of the Seoul National University for this work, an affordable silicon has been used to shape these balls with which, through a chemical process of decomposition of steam, graphene is synthesized to achieve a 3D structure similar to that of popcorn. In fact, the structure is not the only similarity to this product, since the very growth of the graphene that undergoes this process is “quite analogous to the expansion of popcorn, which acquires a voluminous structure at the expense of the corn kernels. originals ” .
The innovation, explained in detail in a publication in Nature Communications, has been used in both the anode protection layer and the cathode material of lithium ion batteries. With this decision, the researchers wanted to ensure that their novel material increased load capacity, while reducing time and maintaining temperature stability.
And the truth is that, beyond the popcorn anecdote, graphene balls seem to work. If this material had already focused the attention of the scientific community due to its potential for batteries, the results of its conversion into a ‘Graphene ball’ reinforce the interest. Thus, as a result of this work, it has not only been proven that this material only takes twelve minutes to fully charge the battery, but that it also ensures that the temperature remains stable at 60º. This is “especially important for electric vehicles,” Samsung emphasizes.
This innovation is aimed at that market, that of electric mobility and, also, that of mobile devices, which, according to its promoters, “promises for the future generation” of batteries on the market. “Our research enables the massive synthesis of a multifunctional material composed of graphene at an affordable price , “ says Son In-hyuk, a participant in this project. With it, he stresses, “the capabilities of lithium ion batteries are strengthened at a time when the market for mobile devices and electric vehicles is growing rapidly . “