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.
- 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.
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. https://doi.org/10.1149/1945-7111/ab7a9e
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. https://doi.org/10.1149/1945-7111/ab7a9e.
@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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https://doi.org/10.1149/1945-7111/ab7a9e
https://doi.org/10.1149/1945-7111/ab7a9e
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Figure 1: Calculated gas-phase reaction enthalpies for hydrolysis and acidolysis of TMSML.
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Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.