A new lithium-sulphur battery with an ultra-high capacity could lead to drastically cheaper electric cars and grid energy storage.
Mahdokht Shaibani at Monash University in Melbourne, Australia, and her colleagues have developed a battery with a capacity five times higher than that of lithium-ion batteries. The battery maintains an efficiency of 99 per cent for more than 200 cycles, and a smartphone-sized version would be able to keep a phone charged for five days.