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    Graphite power for negative electrode active material of lithium-ion secondary battery
    1.
    发明授权
    Graphite power for negative electrode active material of lithium-ion secondary battery 有权

    公开(公告)号：US10522821B2

    公开(公告)日：2019-12-31

    申请号：US15983462

    申请日：2018-05-18

    Applicant: SHOWA DENKO K.K.

    Inventor： Yasuaki Wakizaka ,  Yuichi Kamijo ,  Daisuke Kono ,  Yoshikuni Sato

    IPC: H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/04 ,  C01B32/20 ,  H01M10/0525

    Abstract: A graphite powder, preferably including scale-like particles, which satisfies the following formulae (1) and (2), wherein e(0.5) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 0.5 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution; and e(3) represents the initial charge-discharge efficiency of a coin cell fabricated from an electrode (work electrode) produced by compressing an electrode material employing graphite powder as an active material under a pressure of 3 t/cm2, a lithium metal counter electrode, a separator and an electrolytic solution: e(3)(%)−e(0.5)(%)≥1,  formula (1): e(3)(%)>85.  formula (2): Also disclosed is a method of producing the graphite powder; a graphite material for a battery electrode; an electrode for a lithium ion; and a lithium-ion secondary battery.

    Carbon material, carbon material for battery electrode, and battery
    3.
    发明授权
    Carbon material, carbon material for battery electrode, and battery 有权
    碳材料，电池电极用碳材料和电池

    公开(公告)号：US09406936B2

    公开(公告)日：2016-08-02

    申请号：US14434954

    申请日：2013-10-11

    Applicant: SHOWA DENKO K.K.

    Inventor： Yasuaki Wakizaka ,  Yuichi Kamijo ,  Tomohiro Abe ,  Yoshiki Shimodaira ,  Akinori Sudoh ,  Chiaki Sotowa ,  Yoshihito Yokoyama ,  Takashi Terashima ,  Naoto Kawaguchi

    IPC: H01M4/13 ,  H01M4/587 ,  H01M10/0525 ,  C01B31/00 ,  H01M10/0569

    CPC classification number: H01M4/587 ,  C01B32/00 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2300/0028 ,  Y02T10/7011

    Abstract: A carbon material containing boron atom in an amount of 0.001 to 0.5 mass %, in which the average interplanar spacing (d002) of plane (002) is 0.337 nm or less. By observing optical structures in cross-section of formed bodies made of the carbon material, when areas are accumulated from a smallest structure in an ascending order, SOP represents an area of an optical structure whose accumulated area corresponds to 60% of the total area of all optical structures; when the structures are counted from a structure of a smallest aspect ratio in an ascending order, AROP represents the aspect ratio of the structure which ranks at the position of 60% in total number of all the structures; and when D50 represents an average particle diameter; SOP, AROP and D50 satisfy the following relationship: 1.5≦AROP≦6 and 0.2×D50≦(SOP×AROP)1/2

    Abstract translation: 含有0.001〜0.5质量％的硼原子的碳材料，其中平面（002）的平均晶面间距（d002）为0.337nm以下。 通过观察由碳材料制成的成形体的横截面中的光学结构，当区域从最小结构以升序累积时，SOP表示光学结构的面积相当于总面积的60％的面积 所有光学结构; 当结构从升序的最小纵横比的结构计数时，AROP表示在所有结构的总数中排列在60％位置的结构的纵横比; 当D50表示平均粒径时; SOP，AROP和D50满足以下关系：1.5≤AROP≤6和0.2×D50≤（SOP×AROP）1/2 <2×D50。 还公开了使用碳材料作为电极材料的二次电池。

    CARBON MATERIAL, CARBONACEOUS MATERIAL FOR BATTERY ELECTRODE, AND BATTERY
    5.
    发明申请
    CARBON MATERIAL, CARBONACEOUS MATERIAL FOR BATTERY ELECTRODE, AND BATTERY 审中-公开
    碳材料，电池电极用碳素材料和电池

    公开(公告)号：US20150162600A1

    公开(公告)日：2015-06-11

    申请号：US14411604

    申请日：2013-06-27

    Applicant: SHOWA DENKO K.K.

    Inventor： Yasuaki Wakizaka ,  Yuichi Kamijo ,  Tomohiro Abe ,  Yoshiki Shimodaira ,  Akinori Sudoh ,  Chiaki Sotowa ,  Yoshihito Yokoyama ,  Takashi Terashima

    IPC: H01M4/133 ,  H01M4/1393 ,  C01B31/02 ,  H01M4/587

    CPC classification number: H01M4/133 ,  C01B32/05 ,  C01B32/20 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/587 ,  H01M10/0525 ,  Y10T428/2982

    Abstract: A scale-like carbon material and carbon material for a battery electrode suitable for use as an electrode material for an aqueous-electrolyte secondary battery, wherein the ratio IG/ID (G value) between the peak area (ID) in a range of 1300 to 1400 cm−1 and the peak area (IG) in a range of 1580 to 1620 cm−1 by Raman spectroscopy spectra when an edge surface of the particle of the scale-like carbon material is measured with by Raman microspectrometer is 5.2 to 100 and the average interplanar spacing d002 of plane (d002) by the X-ray diffraction method is 0.337 nm or less and optical structures of the carbon material have a specific shape; the method for producing the same; a carbon material for a battery electrode and a paste for an electrode containing the material; and a secondary battery having excellent charge/discharge cycle characteristics and high current load characteristics.

    Abstract translation: 适合用作水溶液二次电池用电极材料的电池用电极的鳞状碳材料和碳材料，其中峰值区域（ID）在1300以下的比例IG / ID（G值） 当通过拉曼显微光谱仪测量鳞状碳材料的颗粒的边缘表面时，通过拉曼光谱谱在1580至1620cm -1的范围内的峰面积（IG）为1.5至100cm -1。 并且通过X射线衍射法的平面（d002）的平均晶面间距d002为0.337nm以下，碳材料的光学结构具有特定的形状; 其制造方法; 用于电池电极的碳材料和含有该材料的电极用糊料; 以及具有优异的充放电循环特性和高电流负载特性的二次电池。

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