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1. (WO2017099481) CATHODE FOR SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING SAME
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/099481 International Application No.: PCT/KR2016/014352
Publication Date: 15.06.2017 International Filing Date: 08.12.2016
IPC:
H01M 4/13 (2010.01) ,H01M 4/525 (2010.01) ,H01M 4/505 (2010.01) ,H01M 4/62 (2006.01) ,H01M 2/10 (2006.01) ,H01M 10/052 (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
13
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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
36
Selection of substances as active materials, active masses, active liquids
48
of inorganic oxides or hydroxides
50
of manganese
505
of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2
Constructional details, or processes of manufacture, of the non-active parts
10
Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
05
Accumulators with non-aqueous electrolyte
052
Li-accumulators
Applicants:
주식회사 엘지화학 LG CHEM, LTD. [KR/KR]; 서울시 영등포구 여의대로 128 128, Yeoui-daero, Yeongdeungpo-gu, Seoul 07336, KR
Inventors:
설종헌 SEOL, Jong Heon; KR
이민희 LEE, Min Hee; KR
김동규 KIM, Dong Kyu; KR
김재웅 KIM, Jae Woong; KR
김예린 KIM, Ye Lin; KR
최상훈 CHOY, Sang Hoon; KR
김제영 KIM, Je Young; KR
김선규 KIM, Sun Kyu; KR
Agent:
특허법인 태평양 BAE, KIM & LEE IP GROUP; 서울시 서초구 강남대로 343, 11층 11th Floor, 343, Gangnam-daero, Seocho-gu, Seoul 06626, KR
Priority Data:
10-2015-017625510.12.2015KR
10-2016-016612407.12.2016KR
Title (EN) CATHODE FOR SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING SAME
(FR) CATHODE POUR BATTERIE SECONDAIRE ET BATTERIE SECONDAIRE COMPRENANT CELLE-CI
(KO) 이차전지용 양극 및 이를 포함하는 이차전지
Abstract:
(EN) The present invention provides a cathode for a secondary battery and a secondary battery comprising the same, wherein the cathode comprises a cathode active material layer comprising a cathode active material, a conductive material, and a binder; the conductive material comprises bundle-type carbon nanotubes that have an average strand diameter of 15nm or less; the cathode active material layer has a packing density of 3.0g/cc or higher and exhibits an average pore diameter of 0.1μm to 0.5μm, when the pore size distribution is measured at the packing density using mercury intrusion porosimetry, such that an excellent electrolyte wetting property can be exhibited; and, as a result, the cathode wetting period is shortened, when applied to a battery, and the area, which is not filled with the electrolyte, is reduced, making it possible to improve the battery performance.
(FR) La présente invention concerne une cathode pour une batterie secondaire et une batterie secondaire comprenant celle-ci, ladite cathode comprenant une couche de matériau actif de cathode comprenant un matériau actif de cathode, un matériau conducteur et un liant ; le matériau conducteur comprend des nanotubes de carbone de type faisceau qui ont un diamètre de brin moyen inférieur ou égal à 15 nm ; la couche de matériau actif de cathode présente une densité de tassement supérieure ou égale à 3,0 g/cm3 et présente un diamètre de pores moyen de 0,1 µm à 0,5 µm, lorsque la distribution des rayons de pores est mesurée à la densité de tassement à l'aide d'une porosimétrie au mercure, de sorte qu'une excellente propriété de mouillage d'électrolyte peut être obtenue ; et, par conséquent, la période de mouillage de cathode est raccourcie, lorsqu'elle est appliquée à une batterie, et la surface qui n'est pas remplie par l'électrolyte est réduite, ce qui permet d'améliorer les performances de la batterie.
(KO) 본 발명에서는 양극활물질, 도전재 및 바인더를 포함하는 양극활물질층을 포함하고, 상기 도전재는 평균 가닥직경이 15nm 이하인 번들형(bundle-type) 탄소 나노튜브를 포함하며, 상기 양극활물질층은 3.0g/cc 이상의 충진 밀도를 가지고, 상기 충진 밀도에서 수은 압입법에 따른 기공 크기 분포 측정시 평균 기공 직경이 0.1㎛ 내지 0.5㎛를 나타냄으로써, 우수한 전해액 젖음성을 나타낼 수 있으며, 그 결과 전지 적용시 양극 젖음 기간이 단축되고, 전해액 미충전 영역의 감소되어 전지 성능을 향상시킬 수 있는 이차전지용 양극 및 이를 포함하는 이차전지를 제공한다.
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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, DJ, 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, KH, KN, KP, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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: Korean (KO)
Filing Language: Korean (KO)
Also published as:
CN107925056EP3319151US20180219212