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Title: 4-(Trimethylsilyl) Morpholine as a Multifunctional Electrolyte Additive in High Voltage Lithium Ion Batteries

Abstract

In this study we characterize 4-(trimethylsilyl) morpholine (TMSML) as a multifunctional electrolyte additive in Li1.03(Ni0.5Mn0.3Co0.2)0.97O2 (NMC532)//Graphite cells operating at 3-4.4 V. This additive completely prevents the hydrolysis of LiPF6 caused by traces of water in a carbonate electrolyte, both ex and in situ. It also inhibits oxidative decomposition of electrolyte on the energized cathode, impedes the formation of electrically insulating deposits on the cathode surface, decreases transition metal loss from the cathode in aged cells, improves the discharge capacity retention, and decreases the rise of cell resistance during aging. We trace these beneficial functions to the ease of nucleophilic substitution and the N-Si bond dissociation in the TMSML. Our results suggest that TMSML could be a promising electrolyte additive in the high voltage lithium ion batteries.

Authors:
; ; ; ; ; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC)
OSTI Identifier:
1603742
Alternate Identifier(s):
OSTI ID: 1632159
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Journal of the Electrochemical Society (Online)
Additional Journal Information:
Journal Name: Journal of the Electrochemical Society (Online) Journal Volume: 167 Journal Issue: 7; Journal ID: ISSN 1945-7111
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Yang, Jianzhong, Shkrob, Ilya, Liu, Kewei, Connell, Justin, Dietz Rago, Nancy L., Zhang, Zhengcheng, and Liao, Chen. 4-(Trimethylsilyl) Morpholine as a Multifunctional Electrolyte Additive in High Voltage Lithium Ion Batteries. United States: N. p., 2020. Web. doi:10.1149/1945-7111/ab7a9e.
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Yang, Jianzhong, Shkrob, Ilya, Liu, Kewei, Connell, Justin, Dietz Rago, Nancy L., Zhang, Zhengcheng, & Liao, Chen. 4-(Trimethylsilyl) Morpholine as a Multifunctional Electrolyte Additive in High Voltage Lithium Ion Batteries. United States. doi:https://doi.org/10.1149/1945-7111/ab7a9e
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Yang, Jianzhong, Shkrob, Ilya, Liu, Kewei, Connell, Justin, Dietz Rago, Nancy L., Zhang, Zhengcheng, and Liao, Chen. Wed . "4-(Trimethylsilyl) Morpholine as a Multifunctional Electrolyte Additive in High Voltage Lithium Ion Batteries". United States. doi:https://doi.org/10.1149/1945-7111/ab7a9e.
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@article{osti_1603742,
title = {4-(Trimethylsilyl) Morpholine as a Multifunctional Electrolyte Additive in High Voltage Lithium Ion Batteries},
author = {Yang, Jianzhong and Shkrob, Ilya and Liu, Kewei and Connell, Justin and Dietz Rago, Nancy L. and Zhang, Zhengcheng and Liao, Chen},
abstractNote = {In this study we characterize 4-(trimethylsilyl) morpholine (TMSML) as a multifunctional electrolyte additive in Li1.03(Ni0.5Mn0.3Co0.2)0.97O2 (NMC532)//Graphite cells operating at 3-4.4 V. This additive completely prevents the hydrolysis of LiPF6 caused by traces of water in a carbonate electrolyte, both ex and in situ. It also inhibits oxidative decomposition of electrolyte on the energized cathode, impedes the formation of electrically insulating deposits on the cathode surface, decreases transition metal loss from the cathode in aged cells, improves the discharge capacity retention, and decreases the rise of cell resistance during aging. We trace these beneficial functions to the ease of nucleophilic substitution and the N-Si bond dissociation in the TMSML. Our results suggest that TMSML could be a promising electrolyte additive in the high voltage lithium ion batteries.},
doi = {10.1149/1945-7111/ab7a9e},
journal = {Journal of the Electrochemical Society (Online)},
number = 7,
volume = 167,
place = {United States},
year = {2020},
month = {1}
}
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DOI: https://doi.org/10.1149/1945-7111/ab7a9e
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