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1. (WO2012115340) NEGATIVE ELECTRODE MATERIAL FOR A SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/115340    International Application No.:    PCT/KR2011/009655
Publication Date: 30.08.2012 International Filing Date: 15.12.2011
IPC:
H01M 4/04 (2006.01), H01M 4/583 (2010.01), H01M 4/48 (2010.01), B82B 3/00 (2006.01)
Applicants: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY [KR/KR]; 1 Oryong-dong, Buk-gu, Gwangju 500-712 (KR) (For All Designated States Except US).
KIM, Won-Bae [KR/KR]; (KR) (For US Only).
KIM, Jong-Guk [KR/KR]; (KR) (For US Only)
Inventors: KIM, Won-Bae; (KR).
KIM, Jong-Guk; (KR)
Agent: E-SANG PATENT & TRADEMARK LAW FIRM; 3F., Woodo Bldg. 82-2 Yangjae-dong, Seocho-gu Seoul 137-890 (KR)
Priority Data:
10-2011-0017452 25.02.2011 KR
Title (EN) NEGATIVE ELECTRODE MATERIAL FOR A SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
(FR) MATÉRIAU D'ÉLECTRODE NÉGATIVE POUR BATTERIE AUXILIAIRE ET SON PROCÉDÉ DE PRODUCTION
(KO) 이차 전지용 음극재 및 이의 제조방법
Abstract: front page image
(EN)The present invention relates to a negative electrode material for a secondary battery and to a method for manufacturing same. The negative electrode material includes a graphite matrix and a plurality of tin-oxide nanorods disposed on the graphite matrix. Thus, when the negative electrode material is used as the negative electrode for a secondary battery, the negative electrode material may provide high initial capacity (1010 mAhg-1) and coulombic efficiency, superior rate capability, and improved electrochemical properties. Further, the method for manufacturing the negative electrode material for a secondary battery includes: a step of activating a surface of graphite; coating tin-oxide nanoparticles onto the activated surface of the graphite so as to form tin-oxide seed-type graphite; and heating the tin-oxide seed-type graphite using heated water in order to grow a plurality of tin-oxide nanorods. Thus, synthesis solution concentration and reaction time may be adjusted by a catalytic hydrothermal process to efficiently control the diameter and length of the SnO2 nanorods.
(FR)L'invention concerne un matériau d'électrode négative pour batterie auxiliaire et son procédé de production. Le matériau d'électrode négative comprend une matrice en graphite et une pluralité de nano-tiges d'oxyde d'étain disposées sur la matrice en graphite. En conséquence, lorsque matériau d'électrode négative est utilisé comme électrode négative dans une batterie auxiliaire, il peut fournir une capacité initiale (1010 mAhg-1) et un rendement coulombien élevé, une capacité de débit supérieure, et des propriétés électrochimiques améliorées. L'invention concerne également un procédé de production du matériau d'électrode négative pour batterie secondaire consistant : à activer une surface de graphite ; à déposer des nanoparticules d'oxyde d'étain sur la surface activée du graphite de façon à former un graphite de type à germes d'oxyde d'étain ; et à chauffer le graphite de type à germes d'oxyde d'étain au moyen d'eau chauffée afin de faire croître une pluralité de nano-tiges d'oxyde d'étain. En conséquence, la concentration de solution de synthèse et le temps de réaction peuvent être réglés au moyen d'un processus catalytique hydro-thermique pour commander efficacement le diamètre ou la longueur des nano-tiges SnO2.
(KO)이차 전지용 음극재 및 이의 제조방법이 개시된다. 본 발명에 의한 이차 전지용 음극재는 흑연 매트릭스 및 상기 흑연 매트릭스 상에 형성되는 복수개의 산화주석 나노로드를 포함함으로써 이차 전지의 음극재로서 사용하는 경우, 높은 초기 용량(1010mAhg-1) 및 쿨롱 효율(59.2%), 우수한 고속 충/방전 성능(rate capability) 및 향상된 전기 화학적 성질을 나타낸다. 또한, 본 발명에 의한 이차 전지용 음극재는 흑연의 표면을 활성화하는 단계, 상기 활성화된 흑연 표면 상에 산화주석 나노입자들을 코팅하여 산화주석 시드형 흑연을 제조하는 단계 및 상기 산화주석 시드형 흑연을 열수식으로 가열하여 복수개의 산화주석 나노로드를 성장시키는 단계를 포함함으로써 간단한 촉매 열수 공정에 의해 합성 용액 농도 및 반응 시간을 조절함으로써 SnO2 나노로드의 직경 및 길이를 효율적으로 제어할 수 있다.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, 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, ML, MR, NE, SN, TD, TG).
Publication Language: Korean (KO)
Filing Language: Korean (KO)