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1. WO2020137909 - GRAPHITE MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM-ION SECONDARY BATTERY

Publication Number WO/2020/137909
Publication Date 02.07.2020
International Application No. PCT/JP2019/050171
International Filing Date 20.12.2019
IPC
H01M 4/587 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
587for inserting or intercalating light metals
CPC
H01M 4/587
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
587for inserting or intercalating light metals
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • 昭和電工株式会社 SHOWA DENKO K.K. [JP]/[JP]
Inventors
  • 武内 正隆 TAKEUCHI Masataka
  • 上條 祐一 KAMIJO Yuichi
  • 脇坂 安顕 WAKIZAKA Yasuaki
  • 吉岡 俊介 YOSHIOKA Shunsuke
Agents
  • 特許業務法人SSINPAT SSINPAT PATENT FIRM
Priority Data
2018-24269326.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) GRAPHITE MATERIAL FOR NEGATIVE ELECTRODE OF LITHIUM-ION SECONDARY BATTERY
(FR) MATÉRIAU DE GRAPHITE POUR ÉLECTRODE NÉGATIVE DE BATTERIE SECONDAIRE AU LITHIUM-ION
(JA) リチウムイオン二次電池負極用黒鉛材料
Abstract
(EN)
This graphite material for a negative electrode of a lithium-ion secondary battery: has an average plane interval d002 of (002) planes of 0.3354-0.3370 nm as determined by X-ray diffraction measurement; shows that the ratio ID/IG between an intensity (ID) of a peak within 1300-1400 cm-1 and an intensity (IG) of a peak within 1580-1620 cm-1 as respectively determined by Raman spectroscopic measurement is 0.09-0.40; has a surface roughness of 6.0-14.0; has optically anisotropic domains, the area of which accounts for 95.0-99.0% with respect to 100.0% of the sum total area of the optically anisotropic domains, optically isotropic domains, and voids; and satisfies (1) 5 μm2≤Da(10)≤20 μm2, (2) 40 μm2≤Da(50)≤250 μm2, and (3) 200 μm2≤Da(90)≤500 μm2, where the area of the largest domain is defined as Da(n) when an integrated value obtained by integrating the areas of the optically anisotropic domains sequentially, starting with the smallest one, reaches n % of the total area of all the optically anisotropic domains.
(FR)
Matériau de graphite pour une électrode négative d'une batterie secondaire au lithium-ion : ayant un intervalle de plan moyen d002 de (002) plans de 0,3354-0,3370 nm tel que déterminé par une mesure de diffraction à rayons X ; montrant que le rapport ID/IG entre une intensité (ID) d'un pic dans 1300-1400 cm-1 et une intensité (IG) d'un pic dans 1580-1620 cm-1 tel que déterminé respectivement par mesure spectroscopique Raman est de 0,09-0,40 ; présentant une rugosité de surface de 6,0-14,0 ; présentant des domaines optiquement anisotropes, dont la surface représente 95,0 à 99,0 % par rapport à 100,0 % de la surface totale totale des domaines optiquement anisotropes, des domaines optiquement isotropes et des vides ; et satisfaisant (1) 5 μm2≤Da(10)≤20 μm2, (2) 40 μm2≤Da(50)≤250 μm2, et (3) 200 μm2≤Da(90)≤500 μm2, la surface du domaine le plus grand étant définie Da(n) lorsqu'une valeur intégrée obtenue par intégration des zones des domaines optiquement anisotropes, en commençant par la plus petite, atteint n % de la surface totale de tous les domaines optiquement anisotropes.
(JA)
本発明のリチウムイオン二次電池負極用黒鉛材料は、X線回折測定による(002)面の平均面間隔d002が0.3354~0.3370nm;ラマン分光スペクトル測定による1300~1400cm-1にあるピークの強度(ID)と1580~1620cm-1にあるピークの強度(IG)との比ID/IGが0.09~0.40;表面粗さが6.0~14.0;光学異方性ドメイン、光学等方性ドメインおよび空隙の面積の合計100.0%に対して光学異方性ドメイン面積の割合が95.0~99.0%;光学異方性ドメインの面積を小さいものから順に積算した際の積算値が全光学異方性ドメインの面積のn%に達した際の最大ドメインの面積をDa(n)とした場合、(1)5μm2≦Da(10)≦20μm2、(2)40μm2≦Da(50)≦250μm2及び(3)200μm2≦Da(90)≦500μm2を満足する。
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