公开(公告)号：US20140065488A1

公开(公告)日：2014-03-06

申请号：US13969812

申请日：2013-08-19

Applicant: KNU-Industry Cooperation Foundation

Inventor： Sung-Man LEE ,  Yoon-Soo Park

IPC: C01B31/04 ,  H01M4/583

CPC classification number: C01B31/04 ,  C01B32/20 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M10/052 ,  Y02P70/54 ,  Y10T428/2982

Abstract: Disclosed are a method of preparing a negative active material for a rechargeable lithium battery that includes preparing a solution including spherically shaped natural graphite particles and a solvent, ultrasonic wave-treating the solution, and drying the ultrasonic wave-treated solution to prepare graphite modified particles, and a rechargeable lithium battery prepared therefrom.

Abstract translation: 公开了一种制备用于可再充电锂电池的负极活性材料的方法，包括制备包括球形天然石墨颗粒和溶剂的溶液，对溶液进行超声波处理，并干燥超声波处理溶液以制备石墨改性颗粒 和由其制备的可再充电锂电池。

公开(公告)号：US20140178762A1

公开(公告)日：2014-06-26

申请号：US14191706

申请日：2014-02-27

Applicant: KNU-Industry Cooperation Foundation

Inventor： Sung-Man LEE ,  Yoon-Soo Park

IPC: H01M4/36 ,  H01M4/1393

CPC classification number: H01M4/366 ,  C01B31/04 ,  C01B32/20 ,  C01P2004/61 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M10/052

Abstract: Disclosed are a negative active material for a rechargeable lithium battery including a spherically-shaped natural graphite-modified composite particle including: a spherically-shaped natural graphite particle where flake-shaped natural graphite fragments build up and assemble into a cabbage or random shape; and amorphous or semi-crystalline carbon, wherein an open gap between the flake-shaped natural graphite fragments is positioned on a surface part or inside the spherically-shaped natural graphite particle, the amorphous or semi-crystalline carbon is coated on the surface of the spherically-shaped natural graphite particle, and the amorphous or semi-crystalline carbon is present in the open gap, and thereby the open gap positioned on the surface part and inside the spherically-shaped natural graphite particle is maintained, a method of preparing the same, and a rechargeable lithium battery including the same.

Abstract translation: 公开了一种用于可再充电锂电池的负极活性材料，其包括球形天然石墨改性复合颗粒，其包括：鳞片状天然石墨片段堆积并组装成卷心菜或随机形状的球形天然石墨颗粒; 无定形或半结晶碳，其中片状天然石墨片之间的开放间隙位于球形天然石墨颗粒的表面部分或内部，非晶或半结晶碳涂覆在 球形天然石墨颗粒，并且非晶或半结晶碳存在于开放间隙中，从而保持位于球形天然石墨颗粒的表面部分和内部的开放间隙，其制备方法 以及包含该锂电池的可再充电锂电池。