公开(公告)号：US20180047965A1

公开(公告)日：2018-02-15

申请号：US15655375

申请日：2017-07-20

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideyuki KOGA

IPC: H01M2/16 ,  H01M4/525 ,  H01M4/38 ,  H01M10/058 ,  H01M10/0568 ,  H01M4/505 ,  H01M2/14 ,  H01M10/0525 ,  H01M10/0569

Abstract: An object of the present disclosure is to provide a lithium ion battery with low resistance to ion conduction. The present disclosure achieves the object by providing a lithium ion battery comprising: a cathode active material; an anode active material; an insulating oxide with neither electron conductivity nor ion conductivity that is formed in an interface between the cathode active material and the anode active material, and contains at least one kind of an element included in the cathode active material and at least one kind of an element included in the anode active material; and an electrolyte material that is an ion conducting path between the cathode active material and the anode active material; wherein the cathode active material comprises Li, at least one kind of Co, Mn, Ni, and Fe, and O; and the anode active material comprises at least one kind of Si, Li and Ti.

公开(公告)号：US20170244097A1

公开(公告)日：2017-08-24

申请号：US15424459

申请日：2017-02-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Norihiro OSE ,  Hikaru ASO ,  Keisuke OMORI ,  Hajime HASEGAWA ,  Mitsutoshi OTAKI ,  Hideyuki KOGA

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/0525 ,  H01M4/136

CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/136 ,  H01M4/139 ,  H01M4/5815 ,  H01M4/621 ,  H01M4/624 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0068

Abstract: A method is provided where an anode of an all-solid-state lithium ion secondary battery is easily doped with lithium and to provide a small resistance at a low battery capacity. The method includes a manufacturing method of a cathode including mixing at least a conductive assistant (C1) and a sulfide solid electrolyte (E1) to obtain a mixture; and mixing at least one cathode active material, a solid electrolyte (E2) and the mixture obtained from the first step to obtain a cathode mixture, wherein an amount of energy added to the sulfide solid electrolyte (E1) is larger than an amount of energy added to the solid electrolyte (E2), and the mixture is a material that releases lithium ions at a potential lower than a potential at which the cathode active material releases and occludes lithium ions. Manufacturing methods for a cathode and an all-solid-state lithium ion secondary battery including the cathode mixture are also disclosed.

公开(公告)号：US20180151878A1

公开(公告)日：2018-05-31

申请号：US15808348

申请日：2017-11-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Shanghai Jiao Tong University

Inventor： Li YANG ,  Zhengxi ZHANG ,  Jun HUANG ,  Qinghua TIAN ,  Hideyuki KOGA

IPC: H01M4/485 ,  H01M10/0525 ,  C01G23/00 ,  C01G29/00

CPC classification number: H01M4/485 ,  C01G23/002 ,  C01G23/003 ,  C01G29/00 ,  C01G29/006 ,  C01P2002/70 ,  C01P2004/20 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/40 ,  H01M10/0525 ,  H01M10/054 ,  H01M2004/021 ,  H01M2004/027

Abstract: The present invention relates to an anode material for lithium-ion batteries. The anode material for lithium-ion batteries is represented by the molecular formula: MxNyTizO(x+3y+4z)/2, where: 0≤x≤8, 1≤y≤8, and 1≤z≤8; M is an alkali metal selected from the group consisting of Li, Na, and K; and N is a group VA element selected from the group consisting of P, Sb, and Bi or a rare earth metal selected from the group consisting of Nd, Pm, Sm, Eu, Yb, and La. The anode material of the present invention has a delithiation potential of 0.8 to 1.2 V vs. Li+/Li, and has a better potential plateau, better cycle performance, and better output-input properties, than a titanium-based anode material.

公开(公告)号：US20160043399A1

公开(公告)日：2016-02-11

申请号：US14811300

申请日：2015-07-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideyuki KOGA

IPC: H01M4/58 ,  C01B25/45 ,  H01M10/052

CPC classification number: H01M4/5825 ,  C01B25/45 ,  C01P2002/72 ,  C01P2006/40 ,  H01M10/052

Abstract: The main object of the present invention is to provide a cathode active material for a lithium secondary battery with high theoretical capacity. The present invention solves the problem by providing a cathode active material for a lithium secondary battery, wherein the cathode active material comprises a crystal structure belonging to a space group C12/c1, and is represented by (Na1-αLiα)xM1-yNy(PO4)z (0.5≦α≦1, 2.5≦x≦3.5, 0≦y≦0.5, 1.5≦z≦2.5, M is at least one of V and Fe, and N is at least one of Co, Ni and Mn).

Abstract translation: 本发明的主要目的是提供具有高理论容量的锂二次电池用正极活性物质。 本发明通过提供一种用于锂二次电池的阴极活性材料来解决该问题，其中阴极活性材料包括属于空间群C12 / c1的晶体结构，由（Na1-αLiα）xM1-yNy（PO4 ）z（0.5＆nlE;α＆nlE; 1,25＆amp; nlE; x＆nlE; 3.5,0和nlE; y＆nlE; 0.5,1.5＆amp; nlE; z＆nlE; 2.5，M是V和Fe中的至少一个，N是Co，Ni 和Mn）。