公开(公告)号：US20170107117A1

公开(公告)日：2017-04-20

申请号：US15312494

申请日：2015-05-21

Applicant: UBE INDUSTRIES. LTD.

Inventor： Hirofumi TAKEMOTO ,  Yoshizumi TANAKA ,  Hiroshi FUJINO ,  Yasumasa IWAMOTO

IPC: C01G23/00 ,  H01G11/50 ,  H01G11/06 ,  H01G11/46 ,  H01M4/485 ,  H01M10/0525

CPC classification number: C01G23/005 ,  C01P2002/60 ,  C01P2004/03 ,  C01P2006/12 ,  C01P2006/40 ,  H01G11/02 ,  H01G11/06 ,  H01G11/46 ,  H01G11/50 ,  H01M4/1315 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  Y02E60/13

Abstract: Provided is a lithium titanate powder for an electrode of an energy storage device, an active material containing the same, and an energy storage device using the active material. The lithium titanate powder comprises Li4Ti5O12 as a main component, and wherein, when a volume surface diameter calculated from specific surface area determined by the BET method is DBET and a crystallite diameter calculated from half-peak width of (111) plane of Li4Ti5O12 by the Scherrer equation is DX, DBET is 0.1 to 0.6 μm; DX is larger than 80 nm; DBET/DX (μm/μm), ratio of DBET to DX, is 3 or less; M (wherein M is at least one type of metal element selected from a group consisting of Mg, Zn, Al, Ga, and In) is contained; and when atomic concentrations of the M and titanium at 5 nm inner positions from a surface of a lithium titanate particle are D1 (atm %) and Dti (atm %) respectively, and when atomic concentration of the M at 100 nm inner position from the lithium titanate particle surface is D2 (atm %), following formulas (I) and (II) are satisfied. D1/D2≧5  (I) 0.02≦D1/Dti≦0.4  (II)

公开(公告)号：US20160204433A1

公开(公告)日：2016-07-14

申请号：US14915532

申请日：2014-08-29

Applicant: UBE INDUSTRIES, LTD.

Inventor： Hirofumi TAKEMOTO ,  Yoshizumi TANAKA ,  Hiroshi FUJINO ,  Yasumasa IWAMOTO

IPC: H01M4/485 ,  H01M4/131 ,  H01G11/50 ,  H01M10/0525 ,  C01G23/00 ,  H01G11/06

CPC classification number: C01G23/005 ,  C01P2002/32 ,  C01P2002/60 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/40 ,  H01G11/06 ,  H01G11/46 ,  H01G11/50 ,  H01M4/131 ,  H01M4/485 ,  H01M10/0525 ,  Y02E60/13

Abstract: Provided is a lithium titanate powder for an electrode of an energy storage device, the lithium titanate powder comprising Li4Ti5O12 as a main component, wherein, when the volume surface diameter calculated from the specific surface area determined by the BET method is represented as DBET and the crystallite diameter calculated from the half-peak width of the peak of the (111) plane of Li4Ti5O12 by the Scherrer equation is represented as DX, DBET is 0.1 to 0.6 μm, DX is greater than 80 nm, and (DBET/DX (μm/μm)) the ratio of DBET to DX is 3 or less. Also provided are an active material including the lithium titanate powder and an energy storage device using the active material.

Abstract translation: 本发明提供一种能量储存装置的电极用钛酸锂粉末，其特征在于，以Li4Ti5O12为主要成分的钛酸锂粉末，其中，将由BET法测定的比表面积计算出的体积面积直径表示为DBET， 由Scherrer方程由Li4Ti5O12的（111）面的峰的半峰宽度计算的微晶直径表示为DX，DBET为0.1〜0.6μm，DX大于80nm，（DBET / DX（μm） /μm）），DBET与DX的比例为3以下。 还提供了包括钛酸锂粉末的活性材料和使用活性材料的能量存储装置。