公开(公告)号：US20170125844A1

公开(公告)日：2017-05-04

申请号：US15298407

申请日：2016-10-20

申请人： Automotive Energy Supply Corporation

发明人： Takashi Nakagawa

IPC分类号： H01M10/0567 ,  H01M4/525 ,  H01M10/0561 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/505

CPC分类号： H01M10/0567 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/628 ,  H01M10/0525 ,  H01M10/0561 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2300/0037

摘要： Provided is a lithium ion secondary battery including: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; a separator; and an electrolyte solution. The positive electrode active material layer includes a positive electrode active material containing lithium nickel composite oxide. The electrolyte solution contains a disulfonic acid compound as an additive. A mass of the disulfonic acid compound adsorbed on the positive electrode is 1.0 g/m2 or less per unit surface area of the lithium nickel composite oxide.

公开(公告)号：US10276889B2

公开(公告)日：2019-04-30

申请号：US15175132

申请日：2016-06-07

申请人： Automotive Energy Supply Corporation

发明人： Takashi Nakagawa

IPC分类号： H01M10/0525 ,  H01M10/0567 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01M2/16 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M10/04

摘要： Provided is a lithium ion secondary battery including: a positive electrode having a positive electrode active material layer disposed on a positive electrode current collector; a negative electrode having a negative electrode active material layer disposed on a negative electrode current collector; and an electrolyte solution. The positive electrode active material layer includes a positive electrode active material containing a lithium nickel composite oxide. The positive electrode contains an alkaline component by less than 1% relative to a weight of the positive electrode active material. The electrolyte solution includes an additive containing a cyclic carbonate additive with an unsaturated bond. A molar ratio of the cyclic carbonate additive with an unsaturated bond relative to a total molar amount of the additive is 78% or less.