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US 9,287,562 B2Granted
Negative electrode active material comprising spinel lithium titanate, electrical storage device, and method for producing negative electrode active material
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTakashi Takeuchi, Masaki Hasegawa, Natsumi Goto
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Abstract
A negative-electrode active material disclosed herein contains a lithium titanate having a spinel structure, and satisfies the relationship B×P<50, where B is a specific surface (unit: m2/g) of the lithium titanate as measured by a BET technique; and P is obtained by immersing 1 g of the lithium titanate in 50 cm3 of redistilled water and determining a pH of the redistilled water after 30 minutes of agitation.
Claims10
A negative-electrode active material comprising a lithium titanate having a spinel structure, wherein
- the relationship B×P<18.5 is satisfied,
- where B is a specific surface (unit:
- m2/g) of the lithium titanate as measured by a BET technique;
- and P is obtained by immersing 1 g of the lithium titanate in 50 cm3 of redistilled water and determining a pH of the redistilled water after 30 minutes of agitation.
1 more element
Dependencies are inferred from the claim text.