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1. (WO2018047939) NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY CELL
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Pub. No.: WO/2018/047939 International Application No.: PCT/JP2017/032440
Publication Date: 15.03.2018 International Filing Date: 08.09.2017
IPC:
H01M 4/38 (2006.01) ,C01B 32/20 (2017.01) ,H01M 4/133 (2010.01) ,H01M 4/134 (2010.01) ,H01M 4/36 (2006.01) ,H01M 4/587 (2010.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
38
of elements or alloys
[IPC code unknown for C01B 32/20]
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
133
Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
134
Electrodes based on metals, Si or alloys
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4
Electrodes
02
Electrodes composed of, or comprising, active material
36
Selection of substances as active materials, active masses, active liquids
58
of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
583
Carbonaceous material, e.g. graphite-intercalation compounds or CFx
587
for inserting or intercalating light metals
Applicants:
昭和電工株式会社 SHOWA DENKO K. K. [JP/JP]; 東京都港区芝大門一丁目13番9号 13-9, Shiba Daimon 1-chome, Minato-ku, Tokyo 1058518, JP
ユミコア UMICORE [BE/BE]; ビー-1000 ブリュッセル,リュ デュ マライ 31 Rue du Marais 31, B-1000, Brussels, BE
Inventors:
栗田 貴行 KURITA Takayuki; JP
大塚 康成 OTSUKA Yasunari; JP
石井 伸晃 ISHII Nobuaki; JP
Agent:
大家 邦久 OHIE Kunihisa; JP
林 篤史 HAYASHI Atsushi; JP
Priority Data:
2016-17614509.09.2016JP
Title (EN) NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY CELL
(FR) MATÉRIAU D'ÉLECTRODE NÉGATIVE POUR CELLULE SECONDAIRE AU LITHIUM-ION
(JA) リチウムイオン二次電池用負極材
Abstract:
(EN) Provided is a negative electrode material for a lithium ion secondary cell, the material containing: a complex (A) having a Dv50 of 3.0-20.0 µm and containing particles (A1) having a Dn50 of 70 nm or less and comprising a substance that includes an element which can store and release lithium ions and that does not include graphite, particles (A2) comprising a substance that contains graphite and has a Dv50 of 3.0-20.0 µm and a BET specific surface area of 1.0-10.0 m2/g, and a carbonaceous material (A3) that is an organic carbon compound formed on the surface of the particles (A1); a first graphite-containing substance (B) with a Dv50 of 5.0-20.0 µm; and a second graphite-containing substance (C) with a Dv50 of 1.0-10.0 µm. The Dv50 of the substance (B) is at least 4.0 µm greater than the Dv50 of the substance (C). A lithium ion secondary cell obtained by using this negative electrode material has high energy density and can achieve both high electrode density and a high capacity maintenance rate.
(FR) L'invention concerne un matériau d'électrode négative pour une cellule secondaire au lithium-ion, le matériau contenant : un complexe (A) ayant un Dv50 de 3,0 à 20,0 µm et contenant des particules (A1) ayant une Dn50 de 70 nm ou moins et comprenant une substance qui comprend un élément qui peut stocker et libérer des ions lithium et qui ne comprend pas de graphite, des particules (A2) comprenant une substance qui contient du graphite et ayant un Dv50 de 3,0 à 20,0 µm et une surface spécifique BET de 1,0 à 10,0 m2/g, et un matériau carboné (A3) qui est un composé de carbone organique formé sur la surface des particules (A1); une première substance contenant du graphite (B) ayant un Dv50 de 5,0 à 20,0 µm; et une seconde substance contenant du graphite (C) avec un Dv50 de 1,0 à 10,0 µm. Le Dv50 de la substance (B) est d'au moins 4,0 µm supérieure au Dv50 de la substance (C). Une cellule secondaire au lithium-ion obtenue en utilisant ce matériau d'électrode négative présente une densité d'énergie élevée et peut atteindre à la fois une densité d'électrode élevée et un taux de maintenance de haute capacité.
(JA) リチウムイオンを吸蔵・放出可能な元素を含みかつ黒鉛を含まない物質からなり、Dn50が70nm以下である粒子(A1)と、Dv50が3.0μm以上20.0μm以下、BET比表面積が1.0m2/g以上10.0m2/g以下である黒鉛を含む物質からなる粒子(A2)と、粒子(A1)の表面に形成される有機物の炭素化物である炭素質材料(A3)とを含む、Dv50が3.0μm以上20.0μm以下である複合体(A)、Dv50が5.0μm以上20.0μm以下の第1の黒鉛含有物質(B)、およびDv50が1.0μm以上10.0μm以下の第2の黒鉛含有物質(C)を含み、物質(B)のDv50は、物質(C)のDv50より4.0μm以上大きいリチウムイオン二次電池用負極材。この負極材を用いてなるリチウムイオン二次電池は、高いエネルギー密度を有し、かつ高い電極密度と高い容量維持率を両立することができる。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)