A Lithium-Sulf Battery Your Phone That Lasts Five Days
A group of Australian researchers has developed a lithium-sulfur battery with five times more capacity than the current ones
In case you haven’t noticed, more and more parts of human civilization work with batteries. In addition to the ubiquitous smartphones, most electronic devices, electric cars need batteries to function. In the case of homes, having large batteries at home can make solar energy much more viable.
Researchers at Monash University in Melbourne, Australia, have developed a battery that is five times more capacity at the same size as current lithium-ion ones. This means that your mobile phone could be much lighter (most of the volume is the battery) or that the charge lasted five days instead of just one.
The new battery maintains 99% efficiency for more than 200 charge cycles. Instead of lithium ions, it uses lithium-sulfur, a technology already known, but to date it presented problems: the electrode expanded and contracted when charged and discharged, and this caused it to break up shortly after use.
Australian researchers have solved this problem by manufacturing an electrode in which the sulfur particles are bound with a polymer that separates them, thus solving the problem of expansion and contraction. In addition, sulfur is much more abundant and cheaper, which will reduce the price.
However, it will still be necessary to use cobalt in these batteries, a metal whose reserves are being depleted and the one accompanying the dispute, since in the Republic of Congo, one of the main producers, child labor is used for its extraction.