Alumina powder, alumina slurry, alumina-containing coating layer, multilayer separation membrane and secondary battery
AssigneeSumitomo Chemical Company, Limited
InventorsJihoon Rhee, Taebong Kim, Suk Lee
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Abstract
The present invention relates to: an alumina powder wherein a ratio (TBD/LBD) of a tapped bulk density (TBD) to a loose bulk density (LBD) is 1.5 or more; an alumina slurry containing the same; an alumina-containing coating layer; a multilayer separation membrane; and a secondary battery.
Claims17
An alumina powder wherein a ratio (TBD/LBD) of a tapped bulk density (TBD) to a loose bulk density (LBD) is 1.5 or more, and wherein a BET specific surface area is 3.0 to 7.0 m2/g and a ratio (D90/D10) of a particle diameter equivalent to 90% in the volume-based cumulative particle size distribution (D90) to a particle diameter equivalent to 10% in the volume-based cumulative particle size distribution (D10) is 3.0 to 4.0.
Dependencies are inferred from the claim text.