Study sheds new light on why batteries go bad

(DOE/SLAC National Accelerator Laboratory) A comprehensive look at how tiny particles in a lithium ion battery electrode behave shows that rapid-charging the battery and using it to do high-power, rapidly draining work may not be as damaging as researchers had thought -- and that the benefits of slow draining and charging may have been overestimated.The results challenge the prevailing view that 'supercharging' batteries is always harder on battery electrodes than charging at slower rates.