Microscopy directly images problematic lithium dendrites in batteries

Scientists have captured the first real-time nanoscale images of lithium dendrite structures known to degrade lithium-ion batteries. Dendrites form when metallic lithium takes root on a battery's anode and begins growing haphazardly. If the dendrites grow too large, they can puncture the divider between the electrodes and short-circuit the cell, resulting in catastrophic battery failure.

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