An innumerable number of devices run on lithium-ion batteries. Thanks to Rice University researchers, their size is no longer a factor (at least for mobile devices). Prof Pulickel Ajayan and his colleagues claim to have succeeded in building a complete lithium ion energy storage device in a single nanowire. The researchers say their batteries are as small as devices can get, and hence immensely valuable as rechargeable power sources for the latest nanoelectronics.
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