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History Effects in Lithium–Oxygen Batteries: How Initial Seeding Influences the Discharge Capacity
Author(s) -
Rinaldi Ali,
Wijaya Olivia,
Hoster Harry E.,
Yu Denis Y. W.
Publication year - 2014
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201300986
Subject(s) - lithium (medication) , cathode , battery (electricity) , carbon fibers , seeding , limit (mathematics) , oxygen , chemistry , materials science , chemical engineering , thermodynamics , composite material , power (physics) , mathematics , physics , organic chemistry , medicine , composite number , engineering , endocrinology , mathematical analysis
In laboratory experiments, Li–O 2 systems show “sudden death” at capacities far below the theoretical value. Identifying how discharge products limit the total capacity is crucial in Li–O 2 system. We investigated the effect of Li 2 O 2 seed layer deposited on carbon cathode under potentiostatic conditions at increasing overpotentials to the subsequent slow discharge at galvanostatic condition. The discharge capacity attainable in the second step is found to vary by more than a factor of 3 depending on the history, i.e., the seed layer. These results provide evidence that the battery history is decisive for the total discharge capacities.