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US 11,769,909 B2Granted
Nonaqueous electrolyte secondary battery porous layer
AssigneeSumitomo Chemical Company, Limited
InventorsYuichiro Azuma, Kensaku Horie
Life of this patent
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Abstract
An aspect of the present invention achieves a nonaqueous electrolyte secondary battery porous layer that has both favorable ion permeability and favorable heat resistance despite being thin. A nonaqueous electrolyte secondary battery porous layer in accordance with an aspect of the present invention has a thickness of less than 8 μm and an elastic modulus in a shear direction of not less than 16 GPa.
Claims10
A nonaqueous electrolyte secondary battery porous layer,
- the nonaqueous electrolyte secondary battery porous layer consisting essentially of a filler and a resin, an amount of the resin with respect to a total amount of the filler and the resin being not less than 40 weight %, a particle diameter of the filler being not less than 0.015 μm and not more than 0.2 μm, and
- the nonaqueous electrolyte secondary battery porous layer having a thickness of not more than 3 μm and an elastic modulus in a shear direction of not less than 16 GPa.
Dependencies are inferred from the claim text.