Screening for superoxide reactivity in Li-O2 batteries: Effect on Li2O2/LiOh crystallization

Title
Screening for superoxide reactivity in Li-O2 batteries: Effect on Li2O2/LiOh crystallization
Authors
Robert W. Black오시형Jin Hyon LeeTaeeun YimBrian AdamsLinda F. Nazar
Issue Date
2012-01
Publisher
Journal of the American Chemical Society
Citation
VOL 134, NO 6, 2902-2905
Abstract
Unraveling the fundamentals of Li-O2 battery chemistry is crucial to develop practical cells with energy densities that could approach their high theoretical values. We report here a straightforward chemical approach that probes the outcome of the superoxide O2 −, thought to initiate the electrochemical processes in the cell. We show that this serves as a good measure of electrolyte and binder stability. Superoxide readily dehydrofluorinates polyvinylidene to give byproducts that react with catalysts to produce LiOH. The Li2O2 product morphology is a function of these factors and can affect Li-O2 cell performance. This methodology is widely applicable as a probe of other potential cell components.
URI
http://pubs.kist.re.kr/handle/201004/42152
ISSN
00027863
Appears in Collections:
KIST Publication > Article
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