公开(公告)号：US20120064400A1

公开(公告)日：2012-03-15

申请号：US13319589

申请日：2010-05-13

Applicant: Kazunori Takada ,  Bui Thi Hang ,  Tsuyoshi Ohnishi

Inventor： Kazunori Takada ,  Bui Thi Hang ,  Tsuyoshi Ohnishi

IPC: H01M4/02 ,  B05D5/12

CPC classification number: H01M10/0562 ,  H01M4/0421 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/624 ,  H01M10/052 ,  Y02T10/7011

Abstract: An embodiment of the present application aims at providing a material which repeatedly undergoes a conversion reaction and an alloying reaction to have an improved coulombic efficiency in a first cycle of the repeating, and thereby allowing the material to serve as a high-electrical capacity negative electrode of a lithium secondary battery. In order to attain the object, a negative-electrode material is made by mixed dispersion of (i) nanoparticles of an electrical conducting material having electronic conduction and (ii) nanoparticles of an electrode active material which is reducible to a simple substance which undergoes an alloying reaction with lithium. The electrical conducting material is a sulfide having electronic conduction, and the electrode active material is a sulfide of an element which undergoes the alloying reaction with lithium. Further, the element which undergoes the alloying reaction with lithium is silicon.

Abstract translation: 本申请的一个实施方案旨在提供重复进行转化反应和合金化反应的材料，以在重复的第一循环中具有改善的库仑效率，从而允许该材料用作高电容负极 的锂二次电池。 为了达到上述目的，通过（i）具有电子传导性的导电材料的纳米颗粒和（ii）电极活性材料的纳米颗粒的混合分散体制成负极材料，所述纳米颗粒可还原成经历 与锂的合金化反应。 导电材料是具有电子导电性的硫化物，并且电极活性材料是与锂进行合金化反应的元素的硫化物。 此外，与锂进行合金化反应的元素是硅。

公开(公告)号：US08771872B2

公开(公告)日：2014-07-08

申请号：US13319589

申请日：2010-05-13

Applicant: Kazunori Takada ,  Bui Thi Hang ,  Tsuyoshi Ohnishi

Inventor： Kazunori Takada ,  Bui Thi Hang ,  Tsuyoshi Ohnishi

IPC: H01M4/02

CPC classification number: H01M10/0562 ,  H01M4/0421 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/624 ,  H01M10/052 ,  Y02T10/7011

Abstract: An embodiment of the present application aims at providing a material which repeatedly undergoes a conversion reaction and an alloying reaction to have an improved columbic efficiency in a first cycle of the repeating, and thereby allowing the material to serve as a high-electrical capacity negative electrode of a lithium secondary battery. In order to attain the object, a negative-electrode material is made by mixed dispersion of (i) nanoparticles of an electrical conducting material having electronic conduction and (ii) nanoparticles of an electrode active material which is reducible to a simple substance which undergoes an alloying reaction with lithium. The electrical conducting material is a sulfide having electronic conduction, and the electrode active material is a sulfide of an element which undergoes the alloying reaction with lithium. Further, the element which undergoes the alloying reaction with lithium is silicon.

Abstract translation: 本申请的一个实施方案旨在提供重复进行转化反应和合金化反应的材料，以在重复的第一循环中具有改进的突变效率，从而允许该材料用作高电容负极 的锂二次电池。 为了达到上述目的，通过（i）具有电子传导性的导电材料的纳米颗粒和（ii）电极活性材料的纳米颗粒的混合分散体制成负极材料，所述纳米颗粒可还原成经历 与锂的合金化反应。 导电材料是具有电子导电性的硫化物，并且电极活性材料是与锂进行合金化反应的元素的硫化物。 此外，与锂进行合金化反应的元素是硅。