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1. CN107710467 - Negative electrode material for lithium-ion batteries and use therefor

官庁 中華人民共和国
出願番号 201680037961.7
出願日 01.07.2016
公開番号 107710467
公開日 16.02.2018
公報種別 A
IPC
H01M 4/587
H電気
01基本的電気素子
M化学的エネルギーを電気的エネルギーに直接変換するための方法または手段,例.電池
4電極
02活物質からなるまたは活物質を含有した電極
36活物質,固形活物質,流体活物質の材料の選択
58酸化物,水酸化物以外の無機化合物,例.硫化物,セレン化物,テルル化物,ハロゲン化物またはLiCoFy;ポリアニオン構造を有する化合物,例.リン酸塩,ケイ酸塩またはホウ酸塩
583炭素質材料,例.黒鉛層間化合物またはCFx
587軽金属を挿入するためのもの
C01B 32/205
C化学;冶金
01無機化学
B非金属元素;その化合物
32炭素;その化合物
20黒鉛
205製造
C01B 32/05
C化学;冶金
01無機化学
B非金属元素;その化合物
32炭素;その化合物
05炭素の製造または精製でグループC01B32/15,C01B32/20,C01B32/25,C01B32/30に包含されないもの
C01B 33/02
C化学;冶金
01無機化学
B非金属元素;その化合物
33けい素;その化合物
02けい素
H01M 4/133
H電気
01基本的電気素子
M化学的エネルギーを電気的エネルギーに直接変換するための方法または手段,例.電池
4電極
02活物質からなるまたは活物質を含有した電極
13非水電解質二次電池用の電極,例.リチウム電池用のもの;その製造方法
133炭素質材料,例.黒鉛層間化合物またはCFxを主成分とする電極
H01M 4/36
H電気
01基本的電気素子
M化学的エネルギーを電気的エネルギーに直接変換するための方法または手段,例.電池
4電極
02活物質からなるまたは活物質を含有した電極
36活物質,固形活物質,流体活物質の材料の選択
CPC
C01B 33/18
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
33Silicon; Compounds thereof
113Silicon oxides; Hydrates thereof
12Silica; Hydrates thereof, e.g. lepidoic silicic acid
18Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
C01P 2002/74
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
70defined by measured X-ray, neutron or electron diffraction data
74by peak-intensities or a ratio thereof only
C01P 2002/78
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
70defined by measured X-ray, neutron or electron diffraction data
78by stacking-plane distances or stacking sequences
C01P 2004/51
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
51Particles with a specific particle size distribution
C01P 2004/62
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
60Particles characterised by their size
62Submicrometer sized, i.e. from 0.1-1 micrometer
C01P 2006/12
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2006Physical properties of inorganic compounds
12Surface area
出願人 SHOWA DENKO KK
UMICORE NV
発明者 ISHII NOBUAKI
MUTO ARIHIRO
OTSUKA YASUNARI
TAKEUCHI MASATAKA
VAN GENECHTEN DIRK
PUT STIJN
優先権情報 2015-133590 02.07.2015 JP
発明の名称
(EN) Negative electrode material for lithium-ion batteries and use therefor
(ZH) 锂离子电池用负极材料和其用途
要約
(EN)
This negative electrode material has a high discharge capacity per unit mass and excellent initial efficiency. By using the negative electrode material, it is possible to provide a high-capacity lithium-ion battery with excellent charge-discharge cycle characteristics. The present invention pertains to a negative electrode material for lithium-ion batteries that includes silicon-containing particles, artificial graphite particles, and a carbonaceous material. At least a portion of the silicon-containing particles, artificial graphite particles, and carbonaceous material are combined together into composite particles. The silicon-containing particles have a SiOx layer (0 < x <= 2) on the particle surface and an oxygen content of 1.0 mass% to 18.0 mass% inclusive, with particles having a primary particle diameter of 200 nm or smaller as the main component thereof. The artificial graphite particles are non-scale-shaped particles and have a D50 particle diameter of 1.0 mum to 15.0 mum inclusive, D50 being the particle diameter at 50% of a volume-based cumulative size distribution measured by laser diffractometry. The present invention also pertains to a lithium-ion battery provided with a negative electrode using the negative electrode material.

(ZH)
本发明的负极材料的单位质量的放电容量大、且初始效率优异。通过使用该负极材料,可以形成大容量且充放电循环特性优异的锂离子电池。本发明涉及锂离子电池用负极材料、具有使用该负极材料的负极的锂离子电池,所述锂离子电池用负极材料为包含含硅颗粒、人造石墨颗粒和炭质材料的锂离子电池用负极材料,其为前述含硅颗粒与人造石墨颗粒与炭质材料的其至少一部分复合化而成的复合颗粒,前述含硅颗粒为在颗粒表面具有SiOx层(0