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

Abstract

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.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1498096
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 166; Journal Issue: 2; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Lithium-ion batteries; Silicon

Citation Formats

Tornheim, Adam, Trask, Stephen E., and Zhang, Zhengcheng. Communication—Effect of Lower Cutoff Voltage on the 1st Cycle Performance of Silicon Electrodes. United States: N. p., 2019. Web. doi:10.1149/2.0111902jes.
Tornheim, Adam, Trask, Stephen E., & Zhang, Zhengcheng. Communication—Effect of Lower Cutoff Voltage on the 1st Cycle Performance of Silicon Electrodes. United States. doi:10.1149/2.0111902jes.
Tornheim, Adam, Trask, Stephen E., and Zhang, Zhengcheng. Sat . "Communication—Effect of Lower Cutoff Voltage on the 1st Cycle Performance of Silicon Electrodes". United States. doi:10.1149/2.0111902jes. https://www.osti.gov/servlets/purl/1498096.
@article{osti_1498096,
title = {Communication—Effect of Lower Cutoff Voltage on the 1st Cycle Performance of Silicon Electrodes},
author = {Tornheim, Adam and Trask, Stephen E. and Zhang, Zhengcheng},
abstractNote = {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.},
doi = {10.1149/2.0111902jes},
journal = {Journal of the Electrochemical Society},
number = 2,
volume = 166,
place = {United States},
year = {2019},
month = {1}
}

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