Researchers from Korea's KAIST institute developed a lithium-air rechargeable battery using a nano fiber graphene composite catalyst. This battery has five times greater storage compared to current lithium-ion batteries, and is the highest performing lithium-air battery ever developed. Such batteries may enable electric vehicle to travel almost a 1,000 kilometers on a single charge.
Lithium-Air battery uses lithium on the cathode and oxygen on the anode. Such batteries has been researched for a long time as they are cheap to make and are lighter than lithium-ion batteries. But they are difficult to commercialize because they suffer from short lifespan (because of high resistance during the charge-discharge process). This new battery has a new catalyst made by mixing cobalt oxide nano fiber and graphene. This not just increased the storage, but also resulted in good lifespan - over 80 recharge cycles with capacity greater than 100mAh/g.