US Patent 7981818 - Lead-acid battery with nanofiber separator

http://www.freepatentsonline.com/7981818.html

This patent from P.H. Glatfelter teaches how nanofibers can be used in separators to prevent short circuits for smaller sizes of lead-acid batteries. Claim 1 reads:

1. A multilayer composite sheet for use in a lead-acid battery, comprising

a) a base layer comprising paper or a glass fiber mat;

b) a layer of polymeric nanofibers bonded with discrete adhesive particles to a first surface of the base layer; and

c) a scrim layer bonded with discrete adhesive particles to a surface of the layer of nanofibers opposite the base layer.