This could extend the driving time of electric cars and the life of mobile devices such as cell phones, music players and cameras by the same amount, making a typical laptop battery last 40 hours instead of four..
"It's not a small improvement," researcher Yi Cui said. "It's a revolutionary development."
Cui expressed optimism that the technology could be commercialized within "several years."
This city has been down for so long, it's hard to believe what's risen up here...
