Separator for power storage device
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsMasaki Takahashi, Tomoya Tagawa
Life of this patent
Estimating the term…
Abstract
The purpose of the present invention is to provide a separator which is for a power storage device, and which has high strength and can be thinned. The separator for a power storage device has a microporous membrane containing polyolefin as a main component, wherein the melt tension of the microporous membrane as measured at a temperature of 230° C. is 30 mN or less, and the melt flow rate (MFR) of the microporous membrane as measured under a load of 2.16 kg and at a temperature of 230° C. is 0.9 g/10 min or less.
Claims13
A separator for a power storage device, comprising a microporous membrane containing a polyolefin as a primary component, wherein
- a melt tension of the microporous membrane measured at a temperature of 230° C. is 30 mN or less, and
- a melt flow rate (MFR) of the microporous membrane measured under a load of 2.16 kg at a temperature of 230° C. is 0.9 g/10 min or less.
Dependencies are inferred from the claim text.