Dead islands in lithium batteries creep toward one of the electrodes until reconnecting, slowing degradation and increasing lifetime by nearly 30%

"lighter weight, longer lifetimes, improved safety, faster charging speeds... could store more energy per volume or weight... increase the mileage per charge... can move the detached lithium toward the anode during discharging, and these motions are faster under higher currents. So we added a fast, high-current discharging step right after the battery charges, which moved the isolated lithium far enough to reconnect it with the anode. This reactivates the lithium so it can participate in the life of the battery"