Understanding the impact of a nonafluorinated ether-based electrolyte on Li-S battery

Jiayu Cao; Adam Tornheim; Tobias Glossmann; Andreas Hintennach; Tomas Rojas; Quinton Meisner; Ritu Sahore; Qian Liu; Yan Wang; Anh Ngo; Larry A. Curtiss; Zhengcheng Zhang

doi:10.1149/2.0751915jes

Understanding the impact of a nonafluorinated ether-based electrolyte on Li-S battery

Jiayu Cao, Adam Tornheim, Tobias Glossmann, Andreas Hintennach, Tomas Rojas, Quinton Meisner, Ritu Sahore, Qian Liu, Yan Wang, Anh Ngo, Larry A. Curtiss, Zhengcheng Zhang

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The impact of the electrolyte solvation structure on the performance of Li-S battery was investigated using an electrolyte system containing various solvent ratios of DOL and a nonafluorinated ether: 1,1,2,2-tetrafluoroethyl-2,2,3,3,3-pentafluoropropyl ether (TPE). The cell testing results indicate that increasing the TPE ratio led to both a higher discharge capacity and a higher Coulombic efficiency. The Li electrodes from the Li/Li symmetric cells showed that the one in higher TPE-content electrolyte has a smoother and more continuous SEI layer. AIMD simulation revealed the solvation structure of DOL/TPE – lithium polysulfide changes when the TPE concentration increases, which dictates the lithium polysulfide solubility in such electrolyte. These results shed light on the underpinned mechanism of the improved Coulombic efficiency and cycling performance of the Li-S cell.

Original language	English
Pages (from-to)	A3653-A3659
Journal	Journal of the Electrochemical Society
Volume	166
Issue number	15
DOIs	https://doi.org/10.1149/2.0751915jes
State	Published - 2019
Externally published	Yes

Funding

This research is supported by Daimler AG/Mercedes-Benz Research & Development North America, Inc. Argonne, a U.S. Department of Energy laboratory, is operated by UChicago Argonne, LLC under contract DE-AC02-06CH11357. We gratefully acknowledge the computing resources provided on Bebop, a high-performance computing cluster operated by the Laboratory Computing Resource Center at Argonne National Laboratory.

Funders	Funder number
Daimler AG/Mercedes-Benz Research & Development North America, Inc.
Laboratory Computing Resource Center
U.S. Department of Energy
Argonne National Laboratory
University of Chicago	DE-AC02-06CH11357

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/2.0751915jes

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title = "Understanding the impact of a nonafluorinated ether-based electrolyte on Li-S battery",

abstract = "The impact of the electrolyte solvation structure on the performance of Li-S battery was investigated using an electrolyte system containing various solvent ratios of DOL and a nonafluorinated ether: 1,1,2,2-tetrafluoroethyl-2,2,3,3,3-pentafluoropropyl ether (TPE). The cell testing results indicate that increasing the TPE ratio led to both a higher discharge capacity and a higher Coulombic efficiency. The Li electrodes from the Li/Li symmetric cells showed that the one in higher TPE-content electrolyte has a smoother and more continuous SEI layer. AIMD simulation revealed the solvation structure of DOL/TPE – lithium polysulfide changes when the TPE concentration increases, which dictates the lithium polysulfide solubility in such electrolyte. These results shed light on the underpinned mechanism of the improved Coulombic efficiency and cycling performance of the Li-S cell.",

author = "Jiayu Cao and Adam Tornheim and Tobias Glossmann and Andreas Hintennach and Tomas Rojas and Quinton Meisner and Ritu Sahore and Qian Liu and Yan Wang and Anh Ngo and Curtiss, {Larry A.} and Zhengcheng Zhang",

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doi = "10.1149/2.0751915jes",

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T1 - Understanding the impact of a nonafluorinated ether-based electrolyte on Li-S battery

AU - Cao, Jiayu

AU - Tornheim, Adam

AU - Glossmann, Tobias

AU - Hintennach, Andreas

AU - Rojas, Tomas

AU - Meisner, Quinton

AU - Sahore, Ritu

AU - Liu, Qian

AU - Wang, Yan

AU - Ngo, Anh

AU - Curtiss, Larry A.

AU - Zhang, Zhengcheng

PY - 2019

Y1 - 2019

N2 - The impact of the electrolyte solvation structure on the performance of Li-S battery was investigated using an electrolyte system containing various solvent ratios of DOL and a nonafluorinated ether: 1,1,2,2-tetrafluoroethyl-2,2,3,3,3-pentafluoropropyl ether (TPE). The cell testing results indicate that increasing the TPE ratio led to both a higher discharge capacity and a higher Coulombic efficiency. The Li electrodes from the Li/Li symmetric cells showed that the one in higher TPE-content electrolyte has a smoother and more continuous SEI layer. AIMD simulation revealed the solvation structure of DOL/TPE – lithium polysulfide changes when the TPE concentration increases, which dictates the lithium polysulfide solubility in such electrolyte. These results shed light on the underpinned mechanism of the improved Coulombic efficiency and cycling performance of the Li-S cell.

AB - The impact of the electrolyte solvation structure on the performance of Li-S battery was investigated using an electrolyte system containing various solvent ratios of DOL and a nonafluorinated ether: 1,1,2,2-tetrafluoroethyl-2,2,3,3,3-pentafluoropropyl ether (TPE). The cell testing results indicate that increasing the TPE ratio led to both a higher discharge capacity and a higher Coulombic efficiency. The Li electrodes from the Li/Li symmetric cells showed that the one in higher TPE-content electrolyte has a smoother and more continuous SEI layer. AIMD simulation revealed the solvation structure of DOL/TPE – lithium polysulfide changes when the TPE concentration increases, which dictates the lithium polysulfide solubility in such electrolyte. These results shed light on the underpinned mechanism of the improved Coulombic efficiency and cycling performance of the Li-S cell.

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DO - 10.1149/2.0751915jes

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VL - 166

SP - A3653-A3659

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 15

ER -

Understanding the impact of a nonafluorinated ether-based electrolyte on Li-S battery

Abstract

Funding

UN SDGs

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