As an everyday rechargeable battery releases energy, lithium ions wiggle out from a cobalt oxide cathode and race through a membrane to a carbon anode. Those devices are low in power, wear out quickly, and run the risk of catching fire or exploding.
MIT researcher Yet-Ming Chiang solved all of those problems by replacing the positive electrode with nanoparticles of a new material, lithium iron phosphate, which allows the ions to swiftly slip out and return just as quickly during a recharge cycle. Black and Decker and DeWalt have started using the batteries in high-end power tools, and they may appear in the Chevy Volt electric car by 2010.
1 comments:
Thaks for the education about power tools
Post a Comment