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Title: Quantifying gas generation from slurries used in fabrication of Si-containing electrodes for lithium-ion cells

Abstract

The high capacity of silicon motivates its use as anode material for Li-ion batteries. While such Si-based electrodes are typically processed from aqueous slurries, elemental silicon is highly susceptible to hydrolysis, yielding flammable hydrogen gas as a byproduct. This gassing can present numerous safety and quality concerns for scaling up of the production. In this study we describe a method to quantify the volume of gases generated using the Archimedes principle. We show that the gas volumes are affected by various factors, which include the characteristics of the electrode slurry and attributes (particle size, surface coatings) of the silicon powders. A catalytic effect on gas evolution is observed when a lithiated polycarboxylate binder is present in the solution. On the other hand, negligible gas generation is observed in electrode slurries containing the N-methyl-2-pyrrolidone (NMP) solvent, which could be considered as an alternative to the water-based processes presently under consideration. Lastly, our study can be used as a guide for the development of slurry mixtures that can mitigate the safety concerns associated with the silicon-electrode fabrication process.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Argonne National Lab. (ANL), Argonne, 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:
1463667
Alternate Identifier(s):
OSTI ID: 1548133
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 395; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Archimedes; electrochemistry; hydrogen; polyacrylate binders; silicon

Citation Formats

Rodrigues, Marco-Tulio F., Trask, Stephen E., Shkrob, Ilya A., and Abraham, Daniel P. Quantifying gas generation from slurries used in fabrication of Si-containing electrodes for lithium-ion cells. United States: N. p., 2018. Web. doi:10.1016/j.jpowsour.2018.05.071.
Rodrigues, Marco-Tulio F., Trask, Stephen E., Shkrob, Ilya A., & Abraham, Daniel P. Quantifying gas generation from slurries used in fabrication of Si-containing electrodes for lithium-ion cells. United States. doi:10.1016/j.jpowsour.2018.05.071.
Rodrigues, Marco-Tulio F., Trask, Stephen E., Shkrob, Ilya A., and Abraham, Daniel P. Fri . "Quantifying gas generation from slurries used in fabrication of Si-containing electrodes for lithium-ion cells". United States. doi:10.1016/j.jpowsour.2018.05.071. https://www.osti.gov/servlets/purl/1463667.
@article{osti_1463667,
title = {Quantifying gas generation from slurries used in fabrication of Si-containing electrodes for lithium-ion cells},
author = {Rodrigues, Marco-Tulio F. and Trask, Stephen E. and Shkrob, Ilya A. and Abraham, Daniel P.},
abstractNote = {The high capacity of silicon motivates its use as anode material for Li-ion batteries. While such Si-based electrodes are typically processed from aqueous slurries, elemental silicon is highly susceptible to hydrolysis, yielding flammable hydrogen gas as a byproduct. This gassing can present numerous safety and quality concerns for scaling up of the production. In this study we describe a method to quantify the volume of gases generated using the Archimedes principle. We show that the gas volumes are affected by various factors, which include the characteristics of the electrode slurry and attributes (particle size, surface coatings) of the silicon powders. A catalytic effect on gas evolution is observed when a lithiated polycarboxylate binder is present in the solution. On the other hand, negligible gas generation is observed in electrode slurries containing the N-methyl-2-pyrrolidone (NMP) solvent, which could be considered as an alternative to the water-based processes presently under consideration. Lastly, our study can be used as a guide for the development of slurry mixtures that can mitigate the safety concerns associated with the silicon-electrode fabrication process.},
doi = {10.1016/j.jpowsour.2018.05.071},
journal = {Journal of Power Sources},
issn = {0378-7753},
number = C,
volume = 395,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
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