Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate
2007-05-15
2007-05-15
Yuan, Dah-Wei (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
C429S306000, C429S324000, C429S336000
Reexamination Certificate
active
10312672
ABSTRACT:
The present invention relates to a non-aqueous electrolyte additive for improving safety and a lithium secondary battery comprising the same, and more particularly to a non-aqueous electrolyte additive that can improve cycle life and safety properties of a lithium ion secondary battery.According to the present invention, an organometallic compound represented by the Chemical Formula 1 is added to a non-aqueous electrolyte of a battery as an additive, and thus if a battery voltage is out of normal operation voltage range due to a short circuit and overcharge of a battery, etc., the non-aqueous electrolyte additive decomposes and a part of the decomposed additive polymerizes to form an insulating film on a cathode surface, and a part of the metal reacts with an insulating film formed on a cathode surface to improve thermal stability of the battery, thereby improving safety of the battery.
REFERENCES:
patent: 4781999 (1988-11-01), Vignaud
patent: 581296 (1994-02-01), None
patent: 60-184028 (1985-09-01), None
patent: 2-145563 (1990-06-01), None
patent: 03-236171 (1991-10-01), None
patent: 07-302614 (1995-11-01), None
patent: 11-199579 (1999-07-01), None
patent: 11-219730 (1999-08-01), None
patent: 12-268858 (2000-09-01), None
patent: 2002-343423 (2002-11-01), None
Becker et al., Electrochemical Oxidation of deca-n-propylcyclopentasilane [(n-Pr)2Si]5, dodecamethylcyclohexasilane (Me2Si)6 and tetradecaethylcycloheptasilen (Et2Si)7, J. Electroanalytical. Chem., 417 (1996) 77-82.
An Young-Tack
Choi Jeh-Won
Kim Hyeong-Jin
Lee Yeon-Hee
Park Hong-Kyu
Birch & Stewart Kolasch & Birch, LLP
LG Chem, Ltd
Yuan Dah-Wei
LandOfFree
Non-aqueous electrolyte additive for improving safety and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-aqueous electrolyte additive for improving safety and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-aqueous electrolyte additive for improving safety and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3739422