The announcement was made by Watt Laboratory, an organisation under Huawei’s Central Research Institute, at the three-day 57th Battery Symposium held in Japan which concluded on Thursday.
According to Huawei’s research results, the new graphene-based heat-resistant technologies allow Li-ion batteries to remain functional in a 60 degrees Celsius environment — a temperature 10 degrees Celsius higher than the existing upper limit.
The lifespan of the graphene-assisted Li-ion batteries will also be twice as long as ordinary Li-ion batteries.
“We have performed charging and discharging tests in a high-temperature environment. The tests show that when working parameters are the same, the graphene-assisted high-temperature Li-ion battery is five degrees Celsius cooler than ordinary Li-ion batteries,” Dr Yangxing Li, Chief Scientist at Watt Laboratory, said in a statement.
“Over 70 per cent of the graphene battery’s capacity is left after it is recharged 2,000 times at a temperature of 60 degrees Celsius. Less than 13 per cent of its capacity is lost after being kept in a 60 degrees Celsius environment for 200 days,” Dr Li added.
At the laste year’s “Battery Symposium”, Huawei’s Watt Laboratory revealed its quick-charging technology which recharges 48 per cent of a 3,000mAh battery in just five minutes.