Kevlar could keep lithium-ion batteries from catching fire

Lithium-ion batteries are relatively safe but can still pose risks of fire or explosion. Researchers may now have solved that problem using a material commonly found in bullet proof vests.The researchers are using a material derived from Kevlar to insulate parts of the battery responsible for the storage and discharge of energy. Leaks in that wall can cause short circuits, so preventing those them greatly reduces the risk of fire.The batteries will be used first in robots and for military app