The superiority of asymmetric alkyl methyl carbonates

Journal Article · Thu Jan 01 00:00:00 EST 1998 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1838196· OSTI ID:599622

Ein-Eli, Y; McDevitt, S F; Laura, R ^[1]

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1. Covalent Associates, Inc., Woburn, MA (United States)

The electrochemical behavior of graphite electrodes cycled galvanostatically versus Li metal in electrolyte solutions containing LiPF{sub 6}, LiC(SO{sub 2}CF{sub 3}){sub 3}, and LiN(SO{sub 2}C{sub 2}F{sub 5}){sub 2} in ethyl and methyl alkyl carbonates was studied. The solvents include ethyl methyl, ethyl propyl, methyl propyl, isopropyl methyl, and isopropyl ethyl carbonates. The use of asymmetric, aliphatic alkyl methyl carbonates is shown to be essential to achieve both high capacity and long cycle life with graphite electrodes in Li-ion batteries.

• Sponsoring Organization: USDOE
• OSTI ID: 599622
• Journal Information: Journal of the Electrochemical Society, Vol. 145, Issue 1; Other Information: PBD: Jan 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
25 ENERGY STORAGE
METAL-NONMETAL BATTERIES
CARBONATES
PHYSICAL PROPERTIES
ELECTRICAL PROPERTIES
STABILITY
GRAPHITE
LITHIUM
BATTERY CHARGING
VOLTAGE DROP