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Title: Communication—Effect of Lower Cutoff Voltage on the 1st Cycle Performance of Silicon Electrodes

Journal Article · · Journal of the Electrochemical Society

Here, silicon electrodes were cycled once to determine the effect of lower cutoff voltage (LCV) on the irreversible capacity and Li15Si4 phase presence for a protocol that incorporated a potentiostatic hold at the LCV. Cells lithiated below 90 mV showed indications of the crystalline Li15Si4 peak, which was absent for cells with lower cutoff voltages above 90 mV. Irreversible capacity loss was independent of the LCV used. While higher LCVs led to lower capacities, this capacity could be recovered with longer potentiostatic holds. Lastly, these longer holds did not lead to Li15Si4 formation.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1498096
Journal Information:
Journal of the Electrochemical Society, Vol. 166, Issue 2; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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  • Chan, Candace K.; Peng, Hailin; Liu, Gao
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book October 2010