A team of researchers from the University of Illinois at Urbana-Champaign (UIUC) and the U.S. Department of Energy's (DOE) Argonne National Laboratory are exploring ways to design batteries that heal themselves when damaged.

The idea is to station tiny microspheres, each smaller than a single red blood cell, which contain liquid metal inside. Added along with the battery components, they lie dormant for most of the battery's lifetime.

If the battery is damaged, however, the capsules burst open and release their liquid metal into the battery. The metal fills in the gaps in the electrical circuit, connecting the broken lines, and power is restored.

Source

Also: Learn more about battery design at Green Design Briefs.