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1. (WO2018016737) LITHIUM SECONDARY BATTERY COMPRISING CATHODE ACTIVE MATERIAL FOR SYNTHESIZING LITHIUM COBALT OXIDE, AND MANUFACTURING METHOD THEREFOR
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Pub. No.:    WO/2018/016737    International Application No.:    PCT/KR2017/006076
Publication Date: 25.01.2018 International Filing Date: 12.06.2017
IPC:
H01M 10/0525 (2010.01), H01M 10/42 (2006.01), H01M 10/058 (2010.01), H01M 4/52 (2010.01), H01M 4/525 (2010.01)
Applicants: LG CHEM, LTD. [KR/KR]; 128, Yeoui-daero, Yeongdeungpo-gu, Seoul 07336 (KR)
Inventors: SON, Byoungkuk; (KR).
JANG, Minchul; (KR).
CHOI, Junghun; (KR).
SUNG, Da Young; (KR).
PARK, Se Ho; (KR)
Agent: KIM, Sung Ho; (KR).
PARK, Hyung-Dal; (KR).
KIM, Byeong Pil; (KR)
Priority Data:
10-2016-0092453 21.07.2016 KR
Title (EN) LITHIUM SECONDARY BATTERY COMPRISING CATHODE ACTIVE MATERIAL FOR SYNTHESIZING LITHIUM COBALT OXIDE, AND MANUFACTURING METHOD THEREFOR
(FR) BATTERIE SECONDAIRE AU LITHIUM COMPRENANT UN MATÉRIAU ACTIF DE CATHODE POUR LA SYNTHÈSE D'OXYDE DE COBALT ET DE LITHIUM, ET SON PROCÉDÉ DE FABRICATION
(KO) 리튬 코발트 산화물을 합성하기 위한 양극 활물질을 포함하는 리튬 이차전지, 이의 제조방법
Abstract: front page image
(EN)The present invention relates to: a lithium secondary battery and, more particularly, to a lithium secondary battery using a low-cost cathode active material and having a lithium metal, which is an anode active material, formed on a cathode side; and a manufacturing method therefor. Since the lithium secondary battery according to the present invention uses a complex, in which relatively low-cost Co, CoO, Co3O4, and Li2O are combined, instead of LiCoO2, which is a normal cathode active material, production costs are reduced. Additionally, since LiCoO2 is synthesized through an electrochemical reaction caused by the driving of the battery without separate heat treatment, the manufacturing process is simple, thereby facilitating mass production. In addition, since the lithium secondary battery according to the present invention is coated through a step of forming a lithium thin film on an anode current collector in a state of being shielded from the atmosphere, a surface oxide film can be prevented from being formed on the lithium metal by oxygen and moisture in the atmosphere, resulting in improved life cycle characteristics.
(FR)La présente invention concerne : une batterie secondaire au lithium et, plus particulièrement, une batterie secondaire au lithium utilisant une matière active de cathode à faible coût et ayant un métal lithium, qui est un matériau actif d'anode, formé sur un côté cathode; et un procédé de fabrication de celui-ci. Etant donné que la batterie secondaire au lithium selon la présente invention utilise un complexe, dans lequel relativement faible cout Co, CoO, Co3O4, et Li2O sont combinés, au lieu de LiCoO2, qui est un matériau actif de cathode normal, les coûts de production sont réduits. De plus, étant donné que LiCoO2 est synthétisé par une réaction électrochimique provoquée par l'entraînement de la batterie sans traitement thermique séparé, le procédé de fabrication est simple, facilitant ainsi la production de masse. De plus, étant donné que la batterie secondaire au lithium selon la présente invention est revêtue par une étape de formation d'un film mince de lithium sur un collecteur de courant d'anode dans un état protégé de l'atmosphère, il est possible d'empêcher la formation d'un film d'oxyde de surface sur le métal de lithium par l'oxygène et l'humidité dans l'atmosphère, ce qui permet d'obtenir des caractéristiques de cycle de vie améliorées.
(KO)본 발명은 리튬 이차전지에 관한 것으로, 보다 상세하게는 저가의 양극 활물질을 적용하고, 음극 활물질인 리튬 금속이 양극 측에 형성된 리튬 이차전지, 이의 제조방법에 관한 것이다. 본 발명에 따른 리튬 이차전지는 통상의 양극 활물질인 LiCoO2 대신 비교적 가격이 저렴한 Co, CoO, Co3O4 및 Li2O가 조합된 복합체를 적용하기 때문에 생산 단가를 낮출 수 있으며, 또한 별도의 열처리 공정 없이 전지의 구동으로 인한 전기화학적 반응을 통하여 LiCoO2를 합성하기 때문에 제조 공정이 간단하여 양산이 용이하다. 뿐만 아니라 본 발명에 따른 리튬 이차전지는 음극 집전체 상에 리튬 박막이 형성되는 과정을 통해 대기와 차단된 상태로 코팅되므로, 따라서 리튬 금속의 대기 중 산소 및 수분으로 인한 표면 산화막의 형성을 억제할 수 있으며, 결과적으로 사이클 수명 특성 향상되는 효과가 있다.
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, 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 (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)