US researchers build battery that charges in one minute
Aluminium prototype said to have more than seven times the lifespan of lithium-ion
US scientists have designed an aluminium-based battery that charges in one minute, laying the groundwork for leaps forward in mobile device technology.
The Stanford University team hailed the environmental advantages of their aluminium creation when compared with alkaline batteries and said it would be less prone to catching fire than the lithium-ion variants found in most mobile devices.
Hongjie Dai, a professor of chemistry at Stanford, believes the battery makes strides on previous aluminium models.
"We have developed a rechargeable aluminium battery that may replace existing storage devices, such as alkaline batteries, which are bad for the environment, and lithium-ion batteries, which occasionally burst into flames," he said. Our new battery won't catch fire, even if you drill through it.
"Millions of consumers use 1.5-volt AA and AAA batteries. Our rechargeable aluminium battery generates about two volts of electricity. That's higher than anyone has achieved with aluminium."
The model designed by the Stanford team was also found to have a longer lifespan, enduring more than 7,500 recharges without capacity loss. Previous aluminium batteries were unusable after about 100 cycles, while standard lithium-ion batteries last an average of about 1,000 cycles.