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Bringing ‘Dead’ Batteries Back to Life – Researchers Extend Battery Lifetime by 30%
Islands of inactive lithium creep like worms to reconnect with their electrodes, restoring a battery’s capacity and lifespan.
Researchers at the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University believe they have discovered a means to revive rechargeable lithium batteries, which might increase the range of electric cars and battery life in next-generation electronic devices.
As lithium batteries cycle, small islands of inactive lithium form between the electrodes, reducing the battery’s ability to hold charge. However, the researchers found that they could make this “dead” lithium creep like a worm toward one of the electrodes until it reconnects, thereby partially reversing the undesirable process.
