公开(公告)号：US20140161713A2

公开(公告)日：2014-06-12

申请号：US13896825

申请日：2013-05-17

Applicant: JX NIPPON OIL & ENERGY CORPORATION ,  TODA KOGYO CORP.

Inventor： Takashi SUZUKI ,  Noriyo ISHIMARU ,  Takashi OYAMA ,  Tamotsu TANO ,  Toshiyuki ODA ,  Ippei FUJINAGA (DECEASED) ,  Tomoaki URAI ,  Seiji OKAZAKI ,  Katsuaki KURATA ,  Toshiaki HIRAMOTO ,  Akino SATO ,  Wataru ODA

IPC: H01M4/133

CPC classification number: H01M4/133 ,  C01B32/05 ,  C10B55/00 ,  C10B57/045 ,  H01M4/583 ,  H01M4/587 ,  H01M10/052

Abstract: An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge.A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C. so that a size of a crystallite Lc(002) is in a range of 2 nm to 8 nm, the size being calculated from a (002) diffraction line obtained by X-ray wide-angle diffractometry.

Abstract translation: 用于锂离子二次电池负极的无定形碳材料能够减少由于重复的充放电循环而导致的电容劣化，同时被充电时的存储或浮置电荷。 一种锂离子二次电池的负极用无定形碳材料的制造方法，其特征在于，将通过延迟焦化工序进行焦化的重油成分得到的原料焦炭组合物粉碎分级，得到原料 焦炭组合物，原料焦炭组成为H / C原子比，其氢原子H和碳原子数C之比为0.30〜0.50，微细强度为7〜17质量％。 对原料焦炭组合物的粉末赋予压应力和剪切应力以获得碳化组合物前体; 并在惰性气氛下，在900℃至1500℃的温度下加热碳化组合物前体，使得微晶Lc（002）的尺寸在2nm至8nm的范围内，其尺寸由 通过X射线广角衍射法获得的（002）衍射线。

公开(公告)号：US20170313586A1

公开(公告)日：2017-11-02

申请号：US15525165

申请日：2015-11-12

Applicant: TODA KOGYO CORP.

Inventor： Wataru ODA ,  Kazushige KAWAI ,  Tomohiro HONDA ,  Seiji OKAZAKI ,  Norimichi NAGAI ,  Tetsuro TODA

IPC: C01B32/159 ,  C01B32/162 ,  H01M10/0525 ,  B01J23/745 ,  H01M4/62

CPC classification number: C01B32/159 ,  B01J23/745 ,  C01B32/162 ,  C01B2202/02 ,  C01B2202/30 ,  C01B2202/36 ,  C01P2006/40 ,  H01M4/62 ,  H01M4/625 ,  H01M10/0525

Abstract: The present invention relates to carbon nanotubes that are excellent in dispersibility and a process for producing the carbon nanotubes. The carbon nanotubes according to the present invention each comprise a wall that comprises a parallel portion and a narrowed portion having a tube outer diameter that is not more than 90% of a tube outer diameter of the parallel portion. Thus, the carbon nanotubes are readily dispersible owing to a high abundance ratio of easily-breaking portions.

公开(公告)号：US20130251621A1

公开(公告)日：2013-09-26

申请号：US13896825

申请日：2013-05-17

Applicant: TODA KOGYO CORP. ,  JX NIPPON OIL & ENERGY CORPORATION

Inventor： Takashi SUZUKI ,  Noriyo ISHIMARU ,  Takashi OYAMA ,  Tamotsu TANO ,  Toshiyuki ODA ,  Ippei FUJINAGA (DECEASED) ,  Tomoaki URAl ,  Seiji OKAZAKI ,  Katsuaki KURATA ,  Toshiaki HIRAMOTO ,  Akino SATO ,  Wataru ODA

IPC: H01M4/133

CPC classification number: H01M4/133 ,  C01B32/05 ,  C10B55/00 ,  C10B57/045 ,  H01M4/583 ,  H01M4/587 ,  H01M10/052

Abstract: An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge.A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C. so that a size of a crystallite Lc(002) is in a range of 2 nm to 8 nm, the size being calculated from a (002) diffraction line obtained by X-ray wide-angle diffractometry.

Abstract translation: 用于锂离子二次电池负极的无定形碳材料能够减少由于重复的充放电循环而导致的电容劣化，同时被充电时的存储或浮置电荷。 一种锂离子二次电池的负极用无定形碳材料的制造方法，其特征在于，将通过延迟焦化工序进行焦化的重油成分得到的原料焦炭组合物粉碎分级，得到原料 焦炭组合物，原料焦炭组成为H / C原子比，其氢原子H和碳原子数C之比为0.30〜0.50，微细强度为7〜17质量％。 对原料焦炭组合物的粉末赋予压应力和剪切应力以获得碳化组合物前体; 并在惰性气氛下，在900℃至1500℃的温度下加热碳化组合物前体，使得微晶Lc（002）的尺寸在2nm至8nm的范围内，其尺寸由 通过X射线广角衍射法获得的（002）衍射线。