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Title: Monolithic solid–electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverization

Abstract

Lithium (Li) pulverization and associated large volume expansion during cycling is one of the most critical barriers for the safe operation of Li-metal batteries. Here, we report an approach to minimize the Li pulverization using an electrolyte based on a fluorinated orthoformate solvent. The solid–electrolyte interphase (SEI) formed in this electrolyte clearly exhibits a monolithic feature, which is in sharp contrast with the widely reported mosaic- or multilayer-type SEIs that are not homogeneous and could lead to uneven Li stripping/plating and fast Li and electrolyte depletion over cycling. The highly homogeneous and amorphous SEI not only prevents dendritic Li formation, but also minimizes Li loss and volumetric expansion. Furthermore, this new electrolyte strongly suppresses the phase transformation of the LiNi 0.8Co 0.1Mn 0.1O 2 cathode (from layered structure to rock salt) and stabilizes its structure. In conclusion, tests of high-voltage Li||NMC811 cells show long-term cycling stability and high rate capability, as well as reduced safety concerns.

Authors:
 [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Stanford Univ., Stanford, CA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1573017
Report Number(s):
PNNL-SA-141828
Journal ID: ISSN 2058-7546
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Accepted Manuscript
Journal Name:
Nature Energy
Additional Journal Information:
Journal Volume: 4; Journal Issue: 9; Journal ID: ISSN 2058-7546
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Cao, Xia, Ren, Xiaodi, Zou, Lianfeng, Engelhard, Mark H., Huang, William, Wang, Hansen, Matthews, Bethany E., Lee, Hongkyung, Niu, Chaojiang, Arey, Bruce W., Cui, Yi, Wang, Chongmin, Xiao, Jie, Liu, Jun, Xu, Wu, and Zhang, Ji-Guang. Monolithic solid–electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverization. United States: N. p., 2019. Web. doi:10.1038/s41560-019-0464-5.
Cao, Xia, Ren, Xiaodi, Zou, Lianfeng, Engelhard, Mark H., Huang, William, Wang, Hansen, Matthews, Bethany E., Lee, Hongkyung, Niu, Chaojiang, Arey, Bruce W., Cui, Yi, Wang, Chongmin, Xiao, Jie, Liu, Jun, Xu, Wu, & Zhang, Ji-Guang. Monolithic solid–electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverization. United States. doi:10.1038/s41560-019-0464-5.
Cao, Xia, Ren, Xiaodi, Zou, Lianfeng, Engelhard, Mark H., Huang, William, Wang, Hansen, Matthews, Bethany E., Lee, Hongkyung, Niu, Chaojiang, Arey, Bruce W., Cui, Yi, Wang, Chongmin, Xiao, Jie, Liu, Jun, Xu, Wu, and Zhang, Ji-Guang. Fri . "Monolithic solid–electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverization". United States. doi:10.1038/s41560-019-0464-5.
@article{osti_1573017,
title = {Monolithic solid–electrolyte interphases formed in fluorinated orthoformate-based electrolytes minimize Li depletion and pulverization},
author = {Cao, Xia and Ren, Xiaodi and Zou, Lianfeng and Engelhard, Mark H. and Huang, William and Wang, Hansen and Matthews, Bethany E. and Lee, Hongkyung and Niu, Chaojiang and Arey, Bruce W. and Cui, Yi and Wang, Chongmin and Xiao, Jie and Liu, Jun and Xu, Wu and Zhang, Ji-Guang},
abstractNote = {Lithium (Li) pulverization and associated large volume expansion during cycling is one of the most critical barriers for the safe operation of Li-metal batteries. Here, we report an approach to minimize the Li pulverization using an electrolyte based on a fluorinated orthoformate solvent. The solid–electrolyte interphase (SEI) formed in this electrolyte clearly exhibits a monolithic feature, which is in sharp contrast with the widely reported mosaic- or multilayer-type SEIs that are not homogeneous and could lead to uneven Li stripping/plating and fast Li and electrolyte depletion over cycling. The highly homogeneous and amorphous SEI not only prevents dendritic Li formation, but also minimizes Li loss and volumetric expansion. Furthermore, this new electrolyte strongly suppresses the phase transformation of the LiNi0.8Co0.1Mn0.1O2 cathode (from layered structure to rock salt) and stabilizes its structure. In conclusion, tests of high-voltage Li||NMC811 cells show long-term cycling stability and high rate capability, as well as reduced safety concerns.},
doi = {10.1038/s41560-019-0464-5},
journal = {Nature Energy},
number = 9,
volume = 4,
place = {United States},
year = {2019},
month = {9}
}

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Works referenced in this record:

Electrolyte Additive in Support of 5 V Li Ion Chemistry
journal, January 2011

  • von Cresce, Arthur; Xu, Kang
  • Journal of The Electrochemical Society, Vol. 158, Issue 3, p. A337-A342
  • DOI: 10.1149/1.3532047

Unusual Stability of Acetonitrile-Based Superconcentrated Electrolytes for Fast-Charging Lithium-Ion Batteries
journal, March 2014

  • Yamada, Yuki; Furukawa, Keizo; Sodeyama, Keitaro
  • Journal of the American Chemical Society, Vol. 136, Issue 13, p. 5039-5046
  • DOI: 10.1021/ja412807w

Nonaqueous Liquid Electrolytes for Lithium-Based Rechargeable Batteries
journal, October 2004