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Title: Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering

Abstract

Small angle X-ray scattering studies are conducted to gain insight of the microscopic structures on LiPF 6/carbonates battery electrolyte. The result shows that ethylene carbonate (EC), with a cyclic structure, forms nanoclusters of ~1 nm in linear carbonates ethyl methyl carbonate (EMC), diethyl carbonate (DEC), while it fully dissolves in a cyclic carbonate, propylene carbonate (PC). The ion pair of LiPF 6 in carbonates is measured to be ~6 Å in dimension, corresponding to the form of contact ion pair. The new microscopic structure the battery electrolyte reported herein is important for the understanding of non-ideal behavior of LiPF6 carbonate based electrolyte and thus the design of new electrolyte.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Science and Engineering
  2. Northern Illinois Univ., DeKalb, IL (United States). Dept. of Chemistry and Biochemistry
  3. Northern Illinois Univ., DeKalb, IL (United States). Dept. of Chemistry and Biochemistry; Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division and Joint Center for Energy Storage Research
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1489715
Alternate Identifier(s):
OSTI ID: 1491079
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 166; Journal Issue: 2; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Batteries - Lithium; carbonate; electrolyte structure; SAXS

Citation Formats

Feng, Zhange, Sarnello, Erik, Li, Tao, and Cheng, Lei. Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering. United States: N. p., 2019. Web. doi:10.1149/2.0971816jes.
Feng, Zhange, Sarnello, Erik, Li, Tao, & Cheng, Lei. Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering. United States. doi:10.1149/2.0971816jes.
Feng, Zhange, Sarnello, Erik, Li, Tao, and Cheng, Lei. Fri . "Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering". United States. doi:10.1149/2.0971816jes.
@article{osti_1489715,
title = {Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering},
author = {Feng, Zhange and Sarnello, Erik and Li, Tao and Cheng, Lei},
abstractNote = {Small angle X-ray scattering studies are conducted to gain insight of the microscopic structures on LiPF6/carbonates battery electrolyte. The result shows that ethylene carbonate (EC), with a cyclic structure, forms nanoclusters of ~1 nm in linear carbonates ethyl methyl carbonate (EMC), diethyl carbonate (DEC), while it fully dissolves in a cyclic carbonate, propylene carbonate (PC). The ion pair of LiPF6 in carbonates is measured to be ~6 Å in dimension, corresponding to the form of contact ion pair. The new microscopic structure the battery electrolyte reported herein is important for the understanding of non-ideal behavior of LiPF6 carbonate based electrolyte and thus the design of new electrolyte.},
doi = {10.1149/2.0971816jes},
journal = {Journal of the Electrochemical Society},
number = 2,
volume = 166,
place = {United States},
year = {2019},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1149/2.0971816jes

Figures / Tables:

Figure 1 Figure 1: (a) Chemical structure of EC, PC, EMC and DEC. (b) SAXS data of EC/PC (1/9) and PC. (c) SAXS data of EC/EMC (1/9) and EMC. (d) SAXS data of EC/DEC (1/9) and DEC.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.