公开(公告)号：US20130260253A1

公开(公告)日：2013-10-03

申请号：US13845558

申请日：2013-03-18

Applicant: TDK CORPORATION

Inventor： Keitaro OTSUKI ,  Atsushi SANO ,  Tomohiko KATO

IPC: H01M4/485 ,  H01M4/58

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/485 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y02E60/122

Abstract: A positive electrode material for a lithium ion secondary battery contains a first compound represented by Li3V2(PO4)3 and one or more second compounds selected from vanadium oxide and lithium vanadium phosphate.

Abstract translation: 锂离子二次电池用正极材料含有由Li3V2（PO4）3表示的第一化合物和选自氧化钒和磷酸钒钒的一种以上的第二化合物。

公开(公告)号：US20130260242A1

公开(公告)日：2013-10-03

申请号：US13845910

申请日：2013-03-18

Applicant: TDK CORPORATION

Inventor： Yasuyuki KAWANAKA ,  Kazumasa TANAKA ,  Yasuhiro IKEDA ,  Atsushi SANO

IPC: H01M4/38

CPC classification number: H01M4/386 ,  H01M4/131 ,  H01M4/134 ,  H01M4/64 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The negative electrode for lithium-ion secondary battery is used in which a product of tensile strength and thickness of a negative electrode having a negative electrode active material layer containing silicon and silicon oxide as main components is 3.8 to 9.0 N/mm and a value obtained by dividing the product of the tensile strength and the thickness of the negative electrode by a product of tensile strength and thickness of a negative electrode current collector is 1.06 to 1.29.

Abstract translation: 使用其中具有含有硅和氧化硅作为主要成分的负极活性物质层的负极的拉伸强度和厚度的乘积为3.8〜9.0N / mm的锂离子二次电池用负极， 将负极集电体的拉伸强度和厚度的乘积除以负极集电体的拉伸强度和厚度乘积为1.06〜1.29。

公开(公告)号：US20150311518A1

公开(公告)日：2015-10-29

申请号：US14693143

申请日：2015-04-22

Applicant: TDK CORPORATION

Inventor： Yasuyuki KAWANAKA ,  Tomohiko KATO ,  Atsushi SANO

IPC: H01M4/48 ,  H01M4/525 ,  C01G49/06 ,  H01M10/052 ,  H01M4/62

CPC classification number: H01M4/525 ,  C01G49/06 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/90 ,  H01M2/16 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/622 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode active material for a lithium ion secondary battery includes a network structure formed by at least some of iron oxide particles being linked to each other.

Abstract translation: 用于锂离子二次电池的负极活性物质包括由至少一些彼此连接的氧化铁颗粒形成的网状结构。

公开(公告)号：US20150125744A1

公开(公告)日：2015-05-07

申请号：US14535390

申请日：2014-11-07

Applicant: TDK CORPORATION

Inventor： Nobuyuki HOSAKA ,  Atsushi SANO

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/13

CPC classification number: H01M4/386 ,  H01M4/366 ,  H01M4/485 ,  H01M4/622 ,  H01M10/0525

Abstract: An object of the present invention is to provide a negative electrode for a lithium ion secondary battery with the excellent high-temperature cycle characteristic, and a lithium ion secondary battery including the same. In the negative electrode active material for a lithium ion secondary battery according to the present invention, a surface of a negative electrode active material including silicon or silicon oxide is coated with a polymer compound, and the polymer compound includes a polyacrylic acid derivative whose carboxyl groups at ends of side chains are cross-linked with a divalent metal cation (Mg2+, Ca2+, Sr2+, Ba2+, Co2+, Ni2+, Cu2+, or Zn2+).

Abstract translation: 本发明的目的是提供一种具有优异的高温循环特性的锂离子二次电池用负极和包含该负极的锂离子二次电池。 在本发明的锂离子二次电池用负极活性物质中，包含硅或氧化硅的负极活性物质的表面被高分子化合物覆盖，高分子化合物包含聚酰胺酸衍生物，其羧基 在侧链末端与二价金属阳离子（Mg2 +，Ca2 +，Sr2 +，Ba2 +，Co2 +，Ni2 +，Cu2 +或Zn2 +）交联。

公开(公告)号：US20130260228A1

公开(公告)日：2013-10-03

申请号：US13846197

申请日：2013-03-18

Applicant: TDK CORPORATION

Inventor： Atsushi SANO ,  Keitaro OTSUKI ,  Masahiro OISHI ,  Keiichi FUKUDA

IPC: H01M10/0563

CPC classification number: H01M10/0567 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/0563 ,  H01M10/4235

Abstract: The lithium-ion secondary battery includes a positive electrode containing an active material made of a compound including lithium and a transition metal; an electrolyte containing 5 to 30 ppm of hydrofluoric acid; and a negative electrode containing 1 to 100 ppm of vanadium.

Abstract translation: 锂离子二次电池包括含有由锂和过渡金属构成的化合物的活性物质的正极， 含有5〜30ppm氢氟酸的电解液; 和含有1〜100ppm钒的负极。