Battery: A team of scientists at Cornell University, in the United States, has one battery which achieves 10,000 charge and discharge cycles without loss of performance and capacity. This is a big step forward, as batteries typically have a lifespan of up to 1000 cycles – the minimum quality used by well-known brands in the market.
The battery developed by researcher Jingxu Zheng and his colleagues is built on the basis of aluminum and zinc. Compared to the lithium-ion models, which currently dominate the market, this choice of materials has many advantages.
Advantages of aluminum battery
Certainly, the biggest advantage of the battery developed by scientists is the service life, which is significantly longer than that of the models available on the market. Because it is light and trivalent, the model can also store more energy. Another important factor is the lower production costs, due to the high availability of aluminum in the earth’s crust.
It is not only more efficient and cheaper, but also safer and more environmentally friendly, a feature that is increasingly demanded not only by environmental protection authorities but also by users.
How was it developed?
However, the use of aluminum in battery manufacturing poses challenges. This material has some resistance to integration with the electrodes as it chemically reacts with the fiber optic separator that physically divides the positive and negative poles. Basically, this causes the battery cause a short circuit and become unusable.
The solution found by the team was to design a substrate of intertwined carbon fibers that form an even stronger chemical bond with aluminum. So when the battery When charged, this material is deposited in the three-dimensional carbon structure by means of stronger covalent bonds, with a distribution of electron pairs between the aluminum atoms and the carbon atoms. According to the researchers, this technique enables control with greater precision.