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Researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have discovered a new mechanism to speed up the charging of lithium-ion batteries for electric vehicles. By exposing the cathode to a beam of concentrated light — for example, the white light from a xenon lamp — the battery charging time can be lowered by a factor of two or more. Charging for an electric car that is on empty currently takes about eight hours.
Lithium-ion batteries work in a dark state, with the electrodes housed in a case. Argonne’s photo-assisted technology would use a transparent container that allows concentrated light to illuminate the battery electrodes during charging.
Artistic rendering of Argonne’s…READ MORE