公开(公告)号：US20160172673A1

公开(公告)日：2016-06-16

申请号：US14907087

申请日：2014-07-22

Applicant: SUMITOMO METAL MINING CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiroyuki TOYA ,  Masahiro MORITA ,  Hiroki NAGAI ,  Yoshinari MAKIMURA ,  Tetsuro KOBAYASHI

IPC: H01M4/505 ,  H01M4/36 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/505 ,  C01G53/50 ,  C01P2002/50 ,  C01P2002/74 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/366 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  Y02T10/7011

Abstract: Provided is a cathode active material for a non-aqueous electrolyte secondary battery, with which it is possible to improve the output characteristics during use in extremely low-temperature environments. A lithium compound is mixed with nickel cobalt manganese composite hydroxide particles that are expressed by the general formula: NixCoyMnzMt(OH)2+a (where x+y+z+t=1, 0.30≦×≦0.70, 0.10 ≦y≦0.40, 0.10 ≦z≦0.40, 0≦t≦0.01, and M is one or more elements selected from Mg, Ca, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W) such that the ratio of the number of lithium atoms to the total number of atoms of metal elements other than lithium is 1:0.95 to 1.20. The lithium mixture undergoes calcination in an oxidizing atmosphere so that the rate of temperature rise in a temperature range of at least 30° C. to 800° C. is 4° C. /min to 10° C./min, the calcination temperature is 800° C. to 1000° C., the maintenance time at the calcination temperature is 5 hours or less, and the time from the start of temperature rise to the end of the maintenance time is 3.0 hours to 7.0 hours.

Abstract translation: 本发明提供一种非水电解质二次电池用正极活性物质，能够在极低温环境下提高使用时的输出特性。 将锂化合物与由以下通式表示的镍钴锰复合氢氧化物颗粒混合：NixCoyMnzMt（OH）2 + a（其中x + y + z + t = 1，0.30＆nlE;×＆nlE; 0.70,0.10＆amp; y，n，e，z，n，y，y，y，y，y，y， ），使得锂原子数与锂以外的金属元素的总原子数的比例为1:0.95〜1.20。 锂化合物在氧化气氛中进行煅烧，使得在至少30℃至800℃的温度范围内的温度升高速率为4℃/ min至10℃/ min，煅烧温度 为800℃〜1000℃，煅烧温度下的维护时间为5小时以下，从维持时间开始至维护时间结束的时间为3.0小时〜7.0小时。

公开(公告)号：US20160294017A1

公开(公告)日：2016-10-06

申请号：US15084082

申请日：2016-03-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideyo EBISUZAKI ,  Shinobu OKAYAMA ,  Tetsuro KOBAYASHI

IPC: H01M10/0587 ,  H01M2/18 ,  H01M4/131 ,  H01M10/46 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M10/48

CPC classification number: H01M10/0587 ,  H01M2/0272 ,  H01M2/18 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/46 ,  H01M10/48 ,  H01M2004/028 ,  H01M2220/20 ,  Y02E60/122 ,  Y02T10/7011

Abstract: Provided is a lithium ion secondary battery that enables lithium ion replenishment in a short period of time. The lithium ion secondary battery disclosed herein is provided with a wound electrode assembly in which a long sheet-shaped positive electrode and a long sheet-shaped negative electrode are wound such that the negative electrode is positioned on the outer side of the positive electrode; a third electrode that is disposed outside the wound electrode assembly and that has an Li supply source capable of supplying lithium ion; and a porous insulating film that is disposed between the wound electrode assembly and the third electrode and that is formed from a material usable as a separator in a battery. In this lithium ion secondary battery, the third electrode has a portion facing, across the insulating film, an outer surface of the negative electrode that constitutes the outermost circumference of the negative electrode of the wound electrode assembly, and has a portion facing, across the insulating film, a wound electrode assembly open end face that communicates with the interior of the wound electrode assembly and is an end face of the wound electrode assembly along the direction of the winding axis.

Abstract translation: 提供了能够在短时间内进行锂离子补充的锂离子二次电池。 这里公开的锂离子二次电池设置有缠绕电极组件，其中卷绕长片状正极和长片状负极，使得负极位于正极的外侧; 第三电极，其设置在卷绕电极组件的外侧，并具有能够供给锂离子的Li供给源; 以及设置在卷绕电极组件和第三电极之间并由可用作电池中的隔膜的材料形成的多孔绝缘膜。 在该锂离子二次电池中，第三电极具有面对绝缘膜的部分，负极的外表面构成卷绕电极组件的负极的最外周，并且具有面向 绝缘膜，与卷绕电极组件的内部连通的卷绕电极组件开口端面，并且是卷绕电极组件的沿卷绕轴线方向的端面。