How to increase the lifespan of lithium batteries?
As it is known in the lifespan of lithium batteries they lose their power as time goes by and this is one of the concerns of electric car owners, and very intense we would say.
However, a team of scientists from the University of Stanford found a clever way to increase their lifespan by redesigning the software that manages the charging-discharge circuits. Let’s take things from the beginning though!
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The inevitable reduction in battery capacity that occurs due to use (charging, discharging and recharging), is due to the fact that lithium ions “relax” from the battery electrodes with each charge and discharge cycle.
This problem was solved by the Stanford researchers, managing to reconnect these “dead” pieces of lithium with the negative battery electrode. As is well known, the elements of lithium batteries have a negative electrode (anode) made of lithium, in which during discharge, oxidation takes place, i.e. electrons are released and flow to the positive electrode (essentially, current flows to the poles).
When charging to the positive electrode (cathode) electrons are released and flow to the negative electrode (technically, current enters the battery). The new method studied by the researchers involves the reactivation of the lithium anode with high-intensity discharge at the end of a charging cycle.
This will result in the isolated lithium ions moving towards the ascent. The more intense this current, the faster the ions will move and the better effect this process will have.
The results of the study have been validated with multiple test batteries and through computer-aided simulations.