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1. WO2020107927 - NATURAL GRAPHITE, MODIFIED NATURAL GRAPHITE MATERIAL PREPARED THEREFROM, PREPARATION METHOD, AND APPLICATIONS

Publication Number WO/2020/107927
Publication Date 04.06.2020
International Application No. PCT/CN2019/098885
International Filing Date 01.08.2019
IPC
H01M 4/583 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 10/0525 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
CPC
H01M 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 4/583
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
36Selection of substances as active materials, active masses, active liquids
58of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
Applicants
  • 贝特瑞新材料集团股份有限公司 BTR NEW MATERIAL GROUP CO., LTD. [CN]/[CN]
Inventors
  • 李东东 LI, Dongdong
  • 周海辉 ZHOU, Haihui
  • 周成坤 ZHOU, Chengkun
  • 吴璇 WU, Xuan
Agents
  • 北京品源专利代理有限公司 BEYOND ATTORNEYS AT LAW
Priority Data
201811443746.429.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) NATURAL GRAPHITE, MODIFIED NATURAL GRAPHITE MATERIAL PREPARED THEREFROM, PREPARATION METHOD, AND APPLICATIONS
(FR) GRAPHITE NATUREL, MATÉRIAU DE GRAPHITE NATUREL MODIFIÉ PRÉPARÉ À PARTIR DE CELUI-CI, PROCÉDÉ DE PRÉPARATION ET APPLICATIONS
(ZH) 天然石墨及由其制备得到的改性天然石墨材料、制备方法和应用
Abstract
(EN)
A natural graphite, a modified natural graphite material prepared therefrom, a preparation method, and applications. The natural graphite has the following characteristics: (1) granularity D50 < 10 μm, D90/D10 < 2.5; (2) 002 interplane distance being 0.336-0.360, I002/I110 ≤ 35; (3) 0.6 g/cc ≤ saturation tap density < 1.3 g/cc; and (4) 1.0 m2/g ≤ specific surface area < 10.0 m2/g. Provided is the natural graphite having a specific granularity, specific orientation, specific saturation tap density, and specific surface area and serving as a preparation raw material, and the modified natural graphite material that is ultimately prepared has increased isotropy, thus having improved rate performance and cycle performance.
(FR)
L'invention concerne un graphite naturel, un matériau de graphite naturel modifié préparé à partir de celui-ci, un procédé de préparation et des applications. Le graphite naturel présente les caractéristiques suivantes : (1) une granularité D50 < 10 µm, D90/D10 < 2,5; (2) une distance entre plans 002 étant de 0,336 à 0,360, I002/I110 ≤ 35; (3) 0,6 g/cm3 ≤ masse volumique après tassement à saturation < 1,3 g/cm3; et (4) 1,0 m2/g ≤ surface spécifique < 10,0 m2/g. L'invention concerne le graphite naturel ayant une granularité spécifique, une orientation spécifique, une masse volumique après tassement à saturation spécifique et une surface spécifique et servant de matière première de préparation, et le matériau de graphite naturel modifié qui est finalement préparé présente une isotropie accrue, ce qui permet d'obtenir une performance de vitesse et une performance de cycle améliorées.
(ZH)
一种天然石墨及由其制备得到的改性天然石墨材料、制备方法和应用。所述天然石墨具有如下特征:(1)粒度D50<10μm,D90/D10<2.5;(2)002面间距为0.336-0.360,I 002/I 110≤35;(3)0.6g/cc≤饱和振实密度<1.3g/cc;(4)1.0m 2/g≤比表面积<10.0m 2/g。提供了具有特定粒度、特定取向性、特定振实密度和比表面积的天然石墨,由其作为制备原料,最后制备得到的改性天然石墨材料具有较高的各向同性,进而具有较优的倍率性能和循环性能。
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