How the Smart Battery Detector Works (IMAGE)

Stanford University

How the Smart Battery Detector Works

Caption

In a conventional lithium-ion battery, lithium dendrites (orange) grow through the polymer separator to the cathode, causing a dangerous short- circuit as the voltage drops to zero without warning. Right: With a smart separator (dashed line), the voltage drop occurs when the dendrites reach the copper conducting layer, warning of a potential short-circuit well before the battery fails.

Credit

Hui Wu & Denys Zhuo, Stanford University

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