Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2011-07-12
2011-07-12
Ryan, Patrick (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S232000, C429S212000, C427S113000
Reexamination Certificate
active
07976985
ABSTRACT:
Disclosed is an electrode active material comprising: a core layer capable of repeating lithium intercalation/deintercalation; an amorphous carbon layer; and a crystalline carbon layer, successively, wherein the core layer comprises at least two core particles. A secondary battery comprising the same electrode active material is also disclosed. The electrode active material can inhibit variations in volume of the core layer that may occur during repeated charge/discharge cycles, since the core layer comprising at least two core particles, each core particle having an increased area that is in contact with the carbon layer coated thereon. Therefore, the battery using the electrode active material can provide improved cycle life characteristics.
REFERENCES:
patent: 5702845 (1997-12-01), Kawakami et al.
patent: 6395423 (2002-05-01), Kawakami et al.
patent: 6558438 (2003-05-01), Satoh et al.
patent: 10-003920 (1998-01-01), None
patent: 2001297757 (2001-10-01), None
patent: 2001297757 (2001-10-01), None
patent: 10-2003-0028241 (2003-04-01), None
patent: 1020050001404 (2005-01-01), None
patent: 200501469 (2005-01-01), None
patent: WO 2004114439 (2004-12-01), None
Wang et al., Lithium Insertion in Carbon-Silicon Composite Materials Produced by Mechanical Milling, Aug. 1998, J. Electrochem. Soc., 145, 2751-2758.
Yang et al., Synthesis of Nanocrystalline SiC at Ambient Temperature through High Energy Reaction Milling, 1996, NanoStructured Materials, 7, 873-886.
International Search Report for International Application No. PCT/KR2006/004404; filed Oct. 27, 2006, mailing date Jan. 30, 2007.
Client Office Action dated Sep. 5, 2007, no translation.
Chinese Office Action for application No. 200680040272.8 dated Aug. 21, 2009.
Wang et al.“Lithium Insertion in Carbon-Silicon Composite Materials Produced by Mechanical Milling”; J. Electrochem. Soc., vol. 145, No. 8, Aug. 1998, pp. 2751-2758.
C. S. Wang et al., “Lithium Insertion in Carbon-Silicon Composite Materials Produced by Mechanical Milling” , J. Electrochem. Soc., vol. 145, No. 8, Aug. 1998, pp. 2751-2758.
Zhen-Guo Yang et al., “Synthesis of Nanocrystalline SiC at Ambient Temperature through High Energy Reaction Milling”, NanoStructured Materials, vol. 7, No. 8, Sep. 1996, pp. 873-886.
Office Action issued by the Taiwan Patent Office on Jun. 8, 2010; corresponding to Taiwanese Patent Application No. 95139762 (Claiming priority from Korean Patent Application No. 10-2005-0101806).
Chang Won Seok
Kim Ki Tae
Kwon Ou Jung
Lee Ki Young
Lee Seo Jae
Cantor & Colburn LLP
Lewis Ben
LG Chem Ltd.
Ryan Patrick
LandOfFree
Electrode active material for secondary battery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrode active material for secondary battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrode active material for secondary battery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2692544