All I Know Is Batteries Die

Apparently, scientists have discovered shocking new reasons why:

There are multiple ways a lithium battery can fail, but a longstanding problem associated with high currents is dendrite penetration. Dendrites are tree-like structures that can form on the lithium plating in a battery.

They can quickly penetrate a battery’s ceramic separator, a porous plastic film between the anode and cathode of the battery. Once a dendrite makes its way across the separator, the battery shorts out.

The growth of dendrites depends on the current density, but dendrites spring up in batteries at current densities three orders of magnitude higher than expected or designed.

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