The present application discloses a lithium-ion battery using
heat-activatable microporous membrane which comprises a hot-melt adhesive,
an engineering plastics, a tackifier and a filler. It also discloses
methods of preparing such microporous membrane and the lithium-ion
batteries. The battery built with the use of the microporous membrane of
the present invention shows high rate capability, long cycle life, and low
as well as stable impedance during charge-discharge cycling. The
microporous membrane of the present invention also shows thermal shutdown
behavior.
