Lithium cells the size of rice

A video on Treehugger shows how scientists have produced lithium-ion batteries from a nozzle the width of a human hair. Although only ever likely to be used for small, low power gadgets, these minute batteries actually deliver enough current to be of real use, unlike previous attempts using thin-film printing.

The team that produced this marvel of miniaturisation works at the Wyss Institute for Biologically Inspired Engineering at Harvard University.

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