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Title: Additive effects in high-voltage layered-oxide cells: A statistics of mixtures approach

Li 1.03(Ni 0.5Mn 0.3Co 0.2) 0.97O 2 (NMC)-based coin cells containing the electrolyte additives vinylene carbonate (VC) and tris(trimethylsilyl)phosphite (TMSPi) in the range of 0-2 wt% were cycled between 3.0 and 4.4 V. The changes in capacity at rates of C/10 and C/1 and resistance at 60% state of charge were found to follow linear-with-time kinetic rate laws. Further, the C/10 capacity and resistance data were amenable to modeling by a statistics of mixtures approach. Applying physical meaning to the terms in the empirical models indicated that the interactions between the electrolyte and additives were not simple. For example, there were strong, synergistic interactions between VC and TMSPi affecting C/10 capacity loss, as expected, but there were other, more subtle interactions between the electrolyte components. In conclusion, the interactions between these components controlled the C/10 capacity decline and resistance increase.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 362; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
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)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Li-ion battery; electrolyte additives; statistics of mixtures model
OSTI Identifier:
1372053

Sahore, Ritu, Peebles, Cameron, Abraham, Daniel P., Gilbert, James, and Bloom, Ira. Additive effects in high-voltage layered-oxide cells: A statistics of mixtures approach. United States: N. p., Web. doi:10.1016/j.jpowsour.2017.07.043.
Sahore, Ritu, Peebles, Cameron, Abraham, Daniel P., Gilbert, James, & Bloom, Ira. Additive effects in high-voltage layered-oxide cells: A statistics of mixtures approach. United States. doi:10.1016/j.jpowsour.2017.07.043.
Sahore, Ritu, Peebles, Cameron, Abraham, Daniel P., Gilbert, James, and Bloom, Ira. 2017. "Additive effects in high-voltage layered-oxide cells: A statistics of mixtures approach". United States. doi:10.1016/j.jpowsour.2017.07.043. https://www.osti.gov/servlets/purl/1372053.
@article{osti_1372053,
title = {Additive effects in high-voltage layered-oxide cells: A statistics of mixtures approach},
author = {Sahore, Ritu and Peebles, Cameron and Abraham, Daniel P. and Gilbert, James and Bloom, Ira},
abstractNote = {Li1.03(Ni0.5Mn0.3Co0.2)0.97O2 (NMC)-based coin cells containing the electrolyte additives vinylene carbonate (VC) and tris(trimethylsilyl)phosphite (TMSPi) in the range of 0-2 wt% were cycled between 3.0 and 4.4 V. The changes in capacity at rates of C/10 and C/1 and resistance at 60% state of charge were found to follow linear-with-time kinetic rate laws. Further, the C/10 capacity and resistance data were amenable to modeling by a statistics of mixtures approach. Applying physical meaning to the terms in the empirical models indicated that the interactions between the electrolyte and additives were not simple. For example, there were strong, synergistic interactions between VC and TMSPi affecting C/10 capacity loss, as expected, but there were other, more subtle interactions between the electrolyte components. In conclusion, the interactions between these components controlled the C/10 capacity decline and resistance increase.},
doi = {10.1016/j.jpowsour.2017.07.043},
journal = {Journal of Power Sources},
number = C,
volume = 362,
place = {United States},
year = {2017},
month = {7}
}