公开(公告)号：EP3358658A1

公开(公告)日：2018-08-08

申请号：EP16851938.7

申请日：2016-10-01

申请人： Showa Denko K.K.

发明人： KURITA, Takayuki ,  MATSUO, Akira ,  ISHII, Nobuaki

IPC分类号： H01M4/587 ,  H01M4/36 ,  H01M4/38

CPC分类号： H01M4/364 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/38 ,  H01M4/386 ,  H01M4/387 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

摘要： A negative electrode for a lithium ion secondary battery in which an electrode layer and a collector are laminated is obtained by a method comprising: mixing particles (A) composed of a substance comprising an element capable of intercalating and deintercalating lithium ions and comprising no graphite, particles (B) composed of a substance comprising graphite, carbonaceous fibers (C), and a polymer (D) comprising a polysaccharide comprising an unsubstituted or substituted glucopyranose ring or a derivative of the polysaccharide and having a viscosity in 1 mass% aqueous solution at 25°C of 300-6,000 mPa·s to obtain a granular composite in which each one of the particles (A) and each one of the carbonaceous fibers (C) have contact with each other through the polymer (D) to be integrated, thereby forming a substructure (S), at least a part of surface of each one of the particles (B) is covered with the substructure (S), and each one of the particles (B) has contact with each other through the substructure (S); mixing a liquid medium, the granular composite and a binder to obtain slurry or paste; and allowing the slurry or the paste to adhere to the collector.

公开(公告)号：EP4160728A1

公开(公告)日：2023-04-05

申请号：EP21812965.8

申请日：2021-05-28

申请人： Showa Denko K.K.

发明人： KURITA, Takayuki ,  ITO, Yuji ,  INOUE, Hirofumi

IPC分类号： H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/48 ,  H01M4/58 ,  H01M4/587 ,  C01B32/00 ,  C01B32/05 ,  C01B32/354

摘要： Provided is a negative electrode material for a lithium-ion secondary battery capable of providing a high capacity lithium-ion secondary battery. A negative electrode material for a lithium-ion secondary battery containing a composite (C) that contains a porous carbon (A) and a Si-containing compound (B), wherein the porous carbon (A) satisfies V 1 /V 0 > 0.80 and V 2 /V 0
when a total pore volume at the maximum value of a relative pressure P/P 0 is defined as V 0 and P 0 is a saturated vapor pressure,
a cumulative pore volume at a relative pressure P/P 0 = 0.1 is defined as V 1 , and
a cumulative pore volume at a relative pressure P/P 0 = 10 -7 is defined as V 2 in a nitrogen adsorption test,
and has a BET specific surface area of 800 m 2 /g or more; and
wherein the Si-containing compound (B) is contained in pores of the porous carbon (A).

公开(公告)号：EP3176860A1

公开(公告)日：2017-06-07

申请号：EP15827330.0

申请日：2015-07-27

申请人： Showa Denko K.K.

发明人： KURITA, Takayuki ,  MATSUO, Akira ,  ISHII, Nobuaki

IPC分类号： H01M4/587 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62

CPC分类号： H01M4/366 ,  C04B35/6261 ,  C04B35/62685 ,  C04B35/83 ,  C04B2235/425 ,  C04B2235/428 ,  C04B2235/5288 ,  C04B2235/96 ,  H01M4/36 ,  H01M4/38 ,  H01M4/386 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

摘要： A negative electrode material for lithium ion secondary batteries, the negative electrode material comprising particles (A) containing an element capable of occluding/releasing lithium ions other than a carbon element; graphite particles (B) capable of occluding/releasing lithium ions and having a median value of not smaller than 1.4 and not larger than 3.0 in a number-based distribution of aspect ratios of primary particles and carbon fibers (C); wherein a three dimensional web structure is formed from one or more carbon fibers (C), the particles (A) are fusion-bonded to the structure, and the structure is fusion-bonded to at least a part of a surface of the graphite particle (B). A lithium ion secondary battery is obtained using the negative electrode material.

摘要翻译： 一种锂离子二次电池用负极材料，所述负极材料包含含有能够吸藏/释放除碳元素以外的锂离子的元素的颗粒（A） 在一次粒子和碳纤维（C）的纵横比的数量分布中，能够吸藏/释放锂离子并具有不小于1.4且不大于3.0的中值的石墨粒子（B）; 其中三维网状结构由一种或多种碳纤维（C）形成，所述颗粒（A）与所述结构熔融结合，并且所述结构熔融结合至所述石墨颗粒的至少一部分表面 （B）。 使用该负极材料获得锂离子二次电池。