Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - History effects in lithium-oxygen batteries
T2 - how initial seeding influences the discharge capacity
AU - Rinaldi, Ali
AU - Wijaya, Olivia
AU - Hoster, Harry E.
AU - Yu, Denis Y. W.
PY - 2014/5
Y1 - 2014/5
N2 - 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 Li2O2 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.
AB - 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 Li2O2 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.
KW - batteries
KW - discharge overpotential
KW - electrochemistry
KW - lithium peroxide
KW - seeding
KW - RECHARGEABLE LI-O-2 BATTERIES
KW - AIR BATTERIES
KW - CARBON
KW - ELECTROLYTES
KW - ELECTROCHEMISTRY
KW - PERFORMANCE
KW - LIMITATIONS
KW - ELECTRODES
KW - TRANSPORT
KW - SOLVENTS
U2 - 10.1002/cssc.201300986
DO - 10.1002/cssc.201300986
M3 - Journal article
VL - 7
SP - 1283
EP - 1288
JO - ChemSusChem
JF - ChemSusChem
SN - 1864-5631
IS - 5
ER -