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1. (WO2016052176) METHOD FOR PRODUCING LITHIUM COBALT OXIDE ORIENTED SINTERED PLATE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2016/052176 International Application No.: PCT/JP2015/076163
Publication Date: 07.04.2016 International Filing Date: 15.09.2015
IPC:
C01G 51/00 (2006.01) ,C04B 35/00 (2006.01) ,H01M 4/1391 (2010.01) ,H01M 4/525 (2010.01) ,H01M 4/62 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
G
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
51
Compounds of cobalt
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35
Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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
139
Processes of manufacture
1391
of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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
48
of inorganic oxides or hydroxides
52
of nickel, cobalt or iron
525
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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
62
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
Applicants:
日本碍子株式会社 NGK INSULATORS, LTD. [JP/JP]; 愛知県名古屋市瑞穂区須田町2番56号 2-56, Suda-Cho, Mizuho-Ku, Nagoya-Shi, Aichi 4678530, JP
Inventors:
由良 幸信 YURA Yukinobu; JP
小林 伸行 KOBAYASHI Nobuyuki; JP
Agent:
高村 雅晴 TAKAMURA Masaharu; JP
Priority Data:
2014-20164330.09.2014JP
2015-05490818.03.2015JP
Title (EN) METHOD FOR PRODUCING LITHIUM COBALT OXIDE ORIENTED SINTERED PLATE
(FR) PROCÉDÉ DE PRODUCTION DE PLAQUE FRITTÉE ORIENTÉE D'OXYDE DE COBALT ET DE LITHIUM
(JA) コバルト酸リチウム配向焼結板の製造方法
Abstract:
(EN) Provided is a method for producing a lithium cobalt oxide oriented sintered plate, the method comprising the steps of (a) preparing a green sheet including Co3O4 particles, (b) firing the green sheet to obtain a Co3O4 oriented sintered plate, and (c) firing the Co3O4 oriented sintered plate in the presence of a lithium source to introduce lithium, thereby forming a lithium cobalt oxide oriented sintered plate including LiCoO2, the method further comprising the step of (d1) attaching, prior to step (c), an Mg-containing compound to the Co3O4 oriented sintered plate, or (d2) attaching, after step (c), an Mg-containing compound to the lithium cobalt oxide oriented sintered plate and firing the lithium cobalt oxide oriented sintered plate to which the Mg-containing compound has been attached. The method of the present invention allows for the production of a lithium cobalt oxide oriented sintered plate such that grain boundaries present in the plate thickness direction are significantly reduced and such that improvements in battery performance (in particular, rate capability) when used as a cathode active material in a lithium secondary battery can be achieved.
(FR) L'invention concerne un procédé de production d'une plaque frittée orientée d'oxyde de cobalt et de lithium, le procédé consistant à (a) préparer une feuille crue comprenant des particules de Co3O4, (b) cuire la feuille crue pour obtenir une plaque frittée orientée de Co3O4, et (c) cuire la plaque frittée orientée de Co3O4 en présence d'une source de lithium afin d'introduire du lithium, formant ainsi une plaque frittée orientée d'oxyde de cobalt et de lithium comprenant du LiCoO2, le procédé comprenant en outre l'étape consistant à (d1) fixer, avant l'étape (c), un composé contenant du Mg à la plaque frittée orientée de Co3O4, ou (d2) fixer, après l'étape (c), un composé contenant du Mg à la plaque frittée orientée d'oxyde de cobalt et de lithium et à cuire la plaque frittée orientée d'oxyde de cobalt et de lithium à laquelle a été fixé le composé contenant du Mg. Le procédé de la présente invention permet de produire une plaque frittée orientée d'oxyde de cobalt et de lithium telle que les joins des grains présents dans la direction de l'épaisseur de la plaque sont réduits de manière significative et telle que des améliorations des performances de la batterie (en particulier, la capacité de débit), lorsqu'elle est utilisée en tant que matériau actif de cathode dans une batterie secondaire au lithium, peuvent être obtenues.
(JA)  コバルト酸リチウム配向焼結板の製造方法であって、(a)Co粒子を含んでなるグリーンシートを用意し、(b)グリーンシートを焼成してCo配向焼結板とし、(c)Co配向焼結板をリチウム源の共存下で焼成してリチウムを導入し、それによりLiCoOからなるコバルト酸リチウム配向焼結板を形成する工程を含み、(c)工程に先立ちCo配向焼結板にMg含有化合物を付着させる工程(d1)、又は(c)工程後にコバルト酸リチウム配向焼結板にMg含有化合物を付着させ、該Mg含有化合物が付着された前記コバルト酸リチウム配向焼結板を焼成する工程(d2)をさらに含む方法が提供される。本発明の方法によれば、板厚方向に介在する粒界が有意に低減され、かつ、正極活物質としてリチウム二次電池に用いた場合に電池性能(特にレート特性)の向上を実現可能なコバルト酸リチウム配向焼結板を製造することができる。 
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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)