Contact: Diana Lutz
Washington University in St. Louis
Caption: In a lithium-ion battery, the lithium is stored in metallic (uncharged) form inside the particles of a graphic electrode. During discharge the lithium comes to the electrode’s surface, where it is ionized, creating a current that travels to the cathode. At the cathode, typically a lithium-based alloy, the ions are neutralized and enter electrode particles as metallic lithium. The battery is recharged by forcing a current to flow in the opposite direction, moving the lithium back into the anode.
Credit: MAPLE Lab/WUSTL
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