公开(公告)号：US20150364751A1

公开(公告)日：2015-12-17

申请号：US14765510

申请日：2014-02-03

Applicant: SHOWA DENKO K.K.

Inventor： Yasuaki WAKIZAKA ,  Yuichi KAMIJO ,  Daisuke KONO ,  Yoshikuni SATO

IPC: H01M4/133 ,  C01B31/04 ,  H01M4/587

CPC classification number: H01M4/133 ,  C01B32/20 ,  C01P2006/40 ,  H01M4/043 ,  H01M4/1393 ,  H01M4/587 ,  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.

Abstract translation: 一种满足下式（1）和（2）的石墨粉末，优选包括鳞片状颗粒，其中e（0.5）表示由电极（工作电极）制成的纽扣电池的初始充电 - 放电效率 在0.5t / cm 2的压力下，使用石墨粉末作为活性物质来压制电极材料，锂金属对电极，隔膜和电解液; e（3）表示由在3t / cm 2的压力下使用石墨粉作为活性物质的电极材料制成的电极（工作电极）制造的纽扣电池的初始充放电效率， 电极，隔板和电解液：e（3）（％）-e（0.5）（％）≥1，式（1）：e（3）（％）> 85。 式（2）：还公开了石墨粉的制造方法， 用于电池电极的石墨材料; 锂离子电极; 和锂离子二次电池。

公开(公告)号：US20180261828A1

公开(公告)日：2018-09-13

申请号：US15973810

申请日：2018-05-08

Applicant: SHOWA DENKO K.K.

Inventor： Yasuaki WAKIZAKA ,  Yuichi KAMIJO ,  Daisuke KONO ,  Yoshikuni SATO

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

CPC classification number: H01M4/133 ,  C01B32/20 ,  C01P2006/40 ,  H01M4/043 ,  H01M4/1393 ,  H01M4/587 ,  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.

公开(公告)号：US20180269469A1

公开(公告)日：2018-09-20

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 ,  H01M4/04 ,  H01M4/587 ,  C01B32/20 ,  H01M10/0525

CPC classification number: H01M4/133 ,  C01B32/20 ,  C01P2006/40 ,  H01M4/043 ,  H01M4/1393 ,  H01M4/587 ,  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.

公开(公告)号：US20170155149A1

公开(公告)日：2017-06-01

申请号：US15314828

申请日：2015-05-25

Applicant: SHOWA DENKO K.K.

Inventor： Naoto KAWAGUCHI ,  Yasuaki WAKIZAKA ,  Yuichi KAMIJO ,  Yoshiki SHIMODAIRA ,  Yoshikuni SATO

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

CPC classification number: H01M4/587 ,  C01B32/00 ,  C01B32/05 ,  C01B32/20 ,  C01P2002/74 ,  C01P2004/02 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/40 ,  H01M4/0409 ,  H01M4/043 ,  H01M4/133 ,  H01M4/1393 ,  H01M10/0525 ,  Y02T10/7011

Abstract: A carbon material, being a not-scaly carbon material having specific optical structures, wherein the ratio between the peak intensity I110 of plane (110) and the peak intensity I004 of plane (004) of a graphite crystal determined by the powder XRD measurement, I110/I004, is 0.1 to 0.6; an average circularity is 0.80 to 0.95; d002 is 0.337 nm or less; and the total pore volume of pores having a diameter of 0.4 μm or less measured by the nitrogen gas adsorption method is 8.0 μl/g to 20.0 μl/g; and a production method of the same.