公开(公告)号：US20160185600A1

公开(公告)日：2016-06-30

申请号：US14908281

申请日：2014-07-28

Applicant: SHOWA DENKO K.K.

Inventor： Chiaki SOTOWA ,  Takashi TERASHIMA ,  Yasuaki WAKIZAKA

IPC: C01B31/02 ,  H01M4/587 ,  C01B31/04 ,  H01M4/1393

CPC classification number: C01B32/05 ,  C01B32/20 ,  C01P2002/78 ,  C01P2002/82 ,  H01M4/587 ,  H01M2004/021

Abstract: The present invention provides a carbon material and a material for a battery electrode which is suitable for use as an electrode material for an aqueous-electrolyte secondary battery, which material comprises optical structures having a specific shape, and in which material the ratio IG/ID (R value) between the peak intensity (ID) of a peak in a range of 1300 to 1400 cm−1 and the peak intensity (IG) of a peak in a range of 1580 to 1620 cm−1 measured by Raman spectroscopy spectra when particles of the carbon material are measured with Raman microspectrometer is 0.38 or more and 1.2 or less and the average interplanar spacing d002 of plane (002) by the X-ray diffraction method is 0.335 nm or more and 0.338 nm or less; and a secondary battery excellent in charge/discharge cycle characteristics and large current load characteristics.

Abstract translation: 本发明提供一种碳材料和电池电极用材料，其适用于水电解质二次电池的电极材料，该材料包括具有特定形状的光学结构，其中材料的比例为IG / ID 在1300〜1400cm -1范围内的峰的峰强度（ID）与通过拉曼光谱测定的1580〜1620cm -1范围的峰的峰强度（IG）之间的差（R值） 使用拉曼显微光谱仪测定碳材料的粒子为0.38以上且1.2以下，通过X射线衍射法得到的平面（002）的平均晶面间距d002为0.335nm以上且0.338nm以下， 以及充电/放电循环特性和大电流负载特性优异的二次电池。

公开(公告)号：US20180226649A1

公开(公告)日：2018-08-09

申请号：US15945066

申请日：2018-04-04

Applicant: SHOWA DENKO K.K.

Inventor： Yasuaki WAKIZAKA ,  Chiaki SOTOWA ,  Takashi TERASHIMA

IPC: H01M4/587 ,  C01B32/20 ,  H01M4/02 ,  H01M10/0525 ,  B29L31/34 ,  B29C43/00 ,  H01M4/133

CPC classification number: H01M4/587 ,  B29C43/003 ,  B29L2031/3468 ,  C01B32/20 ,  H01M4/133 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: A carbon material for negative electrodes in lithium ion secondary battery, wherein a specific surface area is not less than 1.5 m2/g and not more than 6.5 m2/g, a tap density is not less than 0.5 g/cm3 and not more than 1.3 g/cm3, a Raman R value is not less than 0.1 and not more than 0.4, no diffraction peak is present in a range of diffraction angle of 42.7° to 43.7° in X-ray diffraction analysis, d002 is not more than 0.337 nm, and at most one peak is present in a range of not less than 500° C. and less than 1000° C. in thermogravimetric-differential thermal analysis.

公开(公告)号：US20190062162A1

公开(公告)日：2019-02-28

申请号：US16176682

申请日：2018-10-31

Applicant: SHOWA DENKO K.K.

Inventor： Chiaki SOTOWA ,  Takashi TERASHIMA ,  Yasuaki WAKIZAKA

IPC: C01B32/05 ,  C01B32/20 ,  H01M4/587

CPC classification number: C01B32/05 ,  C01B32/20 ,  C01P2002/78 ,  C01P2002/82 ,  H01M4/587 ,  H01M2004/021

Abstract: A carbon material and a material for a battery electrode which is suitable for use as an electrode material for an aqueous-electrolyte secondary battery, which material includes optical structures having a specific shape, and in which material the ratio IG/ID (R value) between the peak intensity (ID) of a peak in a range of 1300 to 1400 cm−1 and the peak intensity (IG) of a peak in a range of 1580 to 1620 cm−1 measured by Raman spectroscopy spectra when particles of the carbon material are measured with Raman microspectrometer is 0.38 or more and 1.2 or less and the average interplanar spacing d002 of plane (002) by the X-ray diffraction method is 0.335 nm or more and 0.338 nm or less; and a secondary battery excellent in charge/discharge cycle characteristics and large current load characteristics.

公开(公告)号：US20140170499A1

公开(公告)日：2014-06-19

申请号：US14186934

申请日：2014-02-21

Applicant: SHOWA DENKO K.K.

Inventor： Masataka TAKEUCHI ,  Chiaki SOTOWA

IPC: H01M4/133 ,  H01M4/36

CPC classification number: H01M4/133 ,  H01M4/0433 ,  H01M4/139 ,  H01M4/364 ,  H01M4/587 ,  H01M4/62 ,  H01M4/621 ,  H01M4/661 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122 ,  Y02P70/54 ,  Y10T428/2971

Abstract: The invention relates to an anode for lithium secondary battery comprising vapor grown carbon fiber uniformly dispersed without forming an agglomerate of 10 μm or larger in an anode active material using natural graphite or artificial graphite, which anode is excellent in long cycle life and large current characteristics. Composition used for production for the anode can be produced, for example, by mixing a thickening agent solution containing an anode active material, a thickening agent aqueous solution and styrene butadiene rubber as binder with a composition containing carbon fiber dispersed in a thickening agent with a predetermined viscosity or by mixing an anode active material with vapor grown carbon fiber in dry state and then adding polyvinylidene difluoride thereto.

Abstract translation: 本发明涉及一种锂二次电池用阳极，其包括使用天然石墨或人造石墨在阳极活性物质中形成均匀分散的气相生长碳纤维，而阳极活性物质的长周期性优异，电流特性大 。 用于阳极生产的组合物可以例如通过将含有负极活性物质，增稠剂水溶液和丁苯橡胶作为粘合剂的增稠剂溶液与分散在增稠剂中的含碳纤维的组合物混合， 通过将阳极活性材料与干燥状态下的气相生长碳纤维混合，然后向其中加入聚偏二氟乙烯。