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US 12,603,322 B2Granted
Nonwoven fabric made of thick and thin fibers, and solid electrolyte sheet including the same
AssigneeEntek Asia Inc
InventorsYuji Katagiri, Takahiro Ohara
Life of this patent
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Abstract
The invention is a nonwoven fabric characterized by satisfying 0.25≤(L2/V)≤10, when an average fiber diameter of all fibers is L (μm) and a volume per m2 is V (cm3). The nonwoven fabric leads to a solid electrolyte-carrying sheet in which solid electrolyte particles are carried between fibers and which can achieve a good balance among thickness reduction, powder falling property of the solid electrolyte particles, and electrical conductivity.
Claims9
A nonwoven fabric, comprising:
- (F1) fibers having a fiber diameter of 1.0 μm or thinner and (F2) fibers having a fiber diameter of thicker than 1.0 μm;
- wherein
- the fibers (F1) comprise an inorganic fiber, wherein the inorganic fiber consists essentially of an inorganic compound and is not a cellulose nanofiber, and
- the nonwoven fabric satisfies:
- 1.0≤L2/V≤10
- where
- L is an average fiber diameter of all fibers of the nonwoven fabric in μm, and
- V is an occupied volume cm3/m2 of all the fibers of the nonwoven fabric.
5 more elements
A nonwoven fabric, comprising:
- (F1) fibers having a fiber diameter of 1.0 μm or thinner and (F2) fibers having a fiber diameter of thicker than 1.0 μm;
- wherein
- the fibers (F1) are selected from the group consisting of a mineral fiber, a glass fiber, a silica fiber, an alumina fiber, a silica-alumina fiber, a silica-alumina-magnesia fiber, a silica-alumina-zirconia fiber, a silica-magnesia-calcia fiber, a rock wool, a slag wool, a potassium titanate whisker, a calcium carbonate whisker, a basalt fiber, sepiolite and attapulgite, and
- the nonwoven fabric satisfies:
- 1.0≤L2/V≤10
- where
- L is an average fiber diameter of all fibers of the nonwoven fabric in μm, and
- V is an occupied volume cm3/m2 of all the fibers of the nonwoven fabric.
5 more elements
Dependencies are inferred from the claim text.