Enhancement of lithium anode cyclability in propylene carbonate electrolyte by CO{sub 2} addition and its protective effect against H{sub 2}O impurity

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.2044131· OSTI ID:64785

Osaka, Tetsuya; Momma, Toshiyuki; Tajima, Takayuki; Matsumoto, Yasuhiro ^[1]

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1. Waseda Univ., Tokyo (Japan)

The charge-discharge behavior of a lithium metal anode in propylene carbonate (PC) electrolyte containing added CO{sub 2} was investigated using in situ ac impedance measurements during galvanostatic cycling. In PC electrolyte with CO{sub 2}, the anode`s cycle life was twice as long and its charge transfer resistance was smaller than in the same electrolyte without CO{sub 2}. These enhancements are observed only when lithium is electrodeposited in the presence of CO{sub 2} on nickel substrate; the enhancement does not occur when lithium is deposited without CO{sub 2} and is cycled with CO{sub 2}. Even large amounts of H{sub 2}O in the electrolyte during cycling do not adversely affect the cycle life enhancement by CO{sub 2}. The CO{sub 2} enhancement seems to be due to products formed by reaction of lithium with CO{sub 2} on the electrodeposited lithium surface.

• Sponsoring Organization: USDOE
• OSTI ID: 64785
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 4 Vol. 142; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ANODES
BATTERY CHARGING
CARBON DIOXIDE
CARBONIC ACID ESTERS
CATALYTIC EFFECTS
ELECTRIC BATTERIES
ELECTRODEPOSITED COATINGS
LITHIUM
SERVICE LIFE
VOLTAGE DROP
WATER VAPOR