In most commercialized lithium-ion batteries, polyolefin porous
membranes, specifically polyethylene (PE) and polypropylene (PP),
have been used as separators to prevent the physical contact between
the positive and negative electrodes while permitting free
ionic transport within the cell [1,2]. Although such membranes
offer some advantages such as excellent mechanical strength and
chemical stability, they tend to exhibit large thermally induced