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US 11,769,930 B2Granted
Separator including active layer having lithium-occluding material, and electricity storage device including the same
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsMasanori Nakazawa, Hiroshi Hatayama
Life of this patent
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Abstract
Provided is a separator for electricity storage devices, which comprises an active layer that contains a material (A) that is capable of absorbing lithium (Li), and which has an air permeability of 650 s/100 ml or less.
Claims15
A separator for an electricity storage device comprising
- an active material having a conducting material (B), and a material (A) able to occlude lithium (Li),
- wherein the separator for an electricity storage device has an air permeability of 650 s/100 ml or lower,
- the active layer comprises the material (A) that is able to occlude lithium, and the conducting material (B),
- the material (A) has a mean particle diameter at least 1.1 times and no greater than 500 times a mean particle diameter of the conducting material (B), and
- the conducting material (B) comprises a conductive substance having an electrical resistivity of no higher than 0.1 Ωcm.
2 more elements
Dependencies are inferred from the claim text.