What would you give for a battery, 5x the storage capacity of whatever youβre reading from? Well, the countdown to commercial availability for batteries of this type of capacity has already begun and it would be considerably cheaper than then currently available batteries.
This radical improvement comes from usingΒ sulfurΒ cathodes rather than graphite inΒ lithium-ion batteries. Sulfur ranks high on the list of very abundant materials and is relatively cheap to produce unlike rare minerals like cobalt used to produce regular lithium-ion batteries. So why didnβt anyone think of this until now?
Actually, itβs pretty well known that lithium-sulfur batteries can store far more energy than their lithium-ion counterparts, six-times in theory. However, the batteryβs performance degrades quite rapidly due to its high storage capacity (Thatβs six times the stressβpretty understandable), as the sulfur cathode is nearly double its usual size when the battery is fully charged which destroys electron paths in the binder across the electrodes. As a result of this, repeated charging and discharging lead to rapid deterioration of the batteriesβ performance.
Solving this problem was the goal of a research team at Monash University led byΒ Mahdokt Shaibani,Β and their efforts have led to the development of a new technique for processing lithium-sulfur batteries that allows them to undergo hundreds of charge-discharge cycles without breaking down. Attaining a level of stability that is already being considered as a huge breakthrough in battery technology.
The teamβs technique involved tweaking the process of making lithium-ion batteries just a little differently so that the binder across the electrodes can accommodate the expansion of the sulfur electrodes. In an article published to explain their work,Β Mahdokt ShaibaniΒ said:
Read more: MEET THE NEXT-GEN LITHIUM-SULFUR BATTERIES