A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries

Shuru Chen, Zhaoxin Yu, Mikhail L. Gordin, Ran Yi, Jiangxuan Song, Donghai Wang

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Lithium/sulfur (Li/S) batteries have attracted great attention as a promising energy storage technology, but so far their practical applications are greatly hindered by issues of polysulfide shuttling and unstable lithium/electrolyte interface. To address these issues, a feasible strategy is to construct a rechargeable prelithiated graphite/sulfur batteries. In this work, a fluorinated ether of bis(2,2,2-trifluoroethyl) ether (BTFE) was reported to blend with 1,3-dioxolane (DOL) for making a multifunctional electrolyte of 1.0 M LiTFSI DOL/BTFE (1:1, v/v) to enable high performance prelithiated graphite/S batteries. First, the electrolyte significantly reduces polysulfide solubility to suppress the deleterious polysulfide shuttling and thus improves capacity retention of sulfur cathodes. Second, thanks to the low viscosity and good wettability, the fluorinated electrolyte dramatically enhances the reaction kinetics and sulfur utilization of high-areal-loading sulfur cathodes. More importantly, this electrolyte forms a stable solid-electrolyte interphase (SEI) layer on graphite surface and thus enables remarkable cyclability of graphite anodes. By coupling prelithiated graphite anodes with sulfur cathodes with high areal capacity of ∼3 mAh cm-2, we demonstrate prelithiated graphite/sulfur batteries that show high sulfur-specific capacity of ∼1000 mAh g-1 and an excellent capacity retention of >65% after 450 cycles at C/10.

Original languageEnglish (US)
Pages (from-to)6959-6966
Number of pages8
JournalACS Applied Materials and Interfaces
Volume9
Issue number8
DOIs
StatePublished - Mar 1 2017

Fingerprint

Graphite
Sulfur
Ether
Electrolytes
Ethers
Polysulfides
Cathodes
Anodes
Solid electrolytes
Lithium
Reaction kinetics
Energy storage
Wetting
Solubility
Viscosity
polysulfide

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Chen, Shuru ; Yu, Zhaoxin ; Gordin, Mikhail L. ; Yi, Ran ; Song, Jiangxuan ; Wang, Donghai. / A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries. In: ACS Applied Materials and Interfaces. 2017 ; Vol. 9, No. 8. pp. 6959-6966.
@article{f30daadfab4f413dab5a9ddb1d5c56ac,
title = "A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries",
abstract = "Lithium/sulfur (Li/S) batteries have attracted great attention as a promising energy storage technology, but so far their practical applications are greatly hindered by issues of polysulfide shuttling and unstable lithium/electrolyte interface. To address these issues, a feasible strategy is to construct a rechargeable prelithiated graphite/sulfur batteries. In this work, a fluorinated ether of bis(2,2,2-trifluoroethyl) ether (BTFE) was reported to blend with 1,3-dioxolane (DOL) for making a multifunctional electrolyte of 1.0 M LiTFSI DOL/BTFE (1:1, v/v) to enable high performance prelithiated graphite/S batteries. First, the electrolyte significantly reduces polysulfide solubility to suppress the deleterious polysulfide shuttling and thus improves capacity retention of sulfur cathodes. Second, thanks to the low viscosity and good wettability, the fluorinated electrolyte dramatically enhances the reaction kinetics and sulfur utilization of high-areal-loading sulfur cathodes. More importantly, this electrolyte forms a stable solid-electrolyte interphase (SEI) layer on graphite surface and thus enables remarkable cyclability of graphite anodes. By coupling prelithiated graphite anodes with sulfur cathodes with high areal capacity of ∼3 mAh cm-2, we demonstrate prelithiated graphite/sulfur batteries that show high sulfur-specific capacity of ∼1000 mAh g-1 and an excellent capacity retention of >65{\%} after 450 cycles at C/10.",
author = "Shuru Chen and Zhaoxin Yu and Gordin, {Mikhail L.} and Ran Yi and Jiangxuan Song and Donghai Wang",
year = "2017",
month = "3",
day = "1",
doi = "10.1021/acsami.6b11008",
language = "English (US)",
volume = "9",
pages = "6959--6966",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "8",

}

A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries. / Chen, Shuru; Yu, Zhaoxin; Gordin, Mikhail L.; Yi, Ran; Song, Jiangxuan; Wang, Donghai.

In: ACS Applied Materials and Interfaces, Vol. 9, No. 8, 01.03.2017, p. 6959-6966.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries

AU - Chen, Shuru

AU - Yu, Zhaoxin

AU - Gordin, Mikhail L.

AU - Yi, Ran

AU - Song, Jiangxuan

AU - Wang, Donghai

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Lithium/sulfur (Li/S) batteries have attracted great attention as a promising energy storage technology, but so far their practical applications are greatly hindered by issues of polysulfide shuttling and unstable lithium/electrolyte interface. To address these issues, a feasible strategy is to construct a rechargeable prelithiated graphite/sulfur batteries. In this work, a fluorinated ether of bis(2,2,2-trifluoroethyl) ether (BTFE) was reported to blend with 1,3-dioxolane (DOL) for making a multifunctional electrolyte of 1.0 M LiTFSI DOL/BTFE (1:1, v/v) to enable high performance prelithiated graphite/S batteries. First, the electrolyte significantly reduces polysulfide solubility to suppress the deleterious polysulfide shuttling and thus improves capacity retention of sulfur cathodes. Second, thanks to the low viscosity and good wettability, the fluorinated electrolyte dramatically enhances the reaction kinetics and sulfur utilization of high-areal-loading sulfur cathodes. More importantly, this electrolyte forms a stable solid-electrolyte interphase (SEI) layer on graphite surface and thus enables remarkable cyclability of graphite anodes. By coupling prelithiated graphite anodes with sulfur cathodes with high areal capacity of ∼3 mAh cm-2, we demonstrate prelithiated graphite/sulfur batteries that show high sulfur-specific capacity of ∼1000 mAh g-1 and an excellent capacity retention of >65% after 450 cycles at C/10.

AB - Lithium/sulfur (Li/S) batteries have attracted great attention as a promising energy storage technology, but so far their practical applications are greatly hindered by issues of polysulfide shuttling and unstable lithium/electrolyte interface. To address these issues, a feasible strategy is to construct a rechargeable prelithiated graphite/sulfur batteries. In this work, a fluorinated ether of bis(2,2,2-trifluoroethyl) ether (BTFE) was reported to blend with 1,3-dioxolane (DOL) for making a multifunctional electrolyte of 1.0 M LiTFSI DOL/BTFE (1:1, v/v) to enable high performance prelithiated graphite/S batteries. First, the electrolyte significantly reduces polysulfide solubility to suppress the deleterious polysulfide shuttling and thus improves capacity retention of sulfur cathodes. Second, thanks to the low viscosity and good wettability, the fluorinated electrolyte dramatically enhances the reaction kinetics and sulfur utilization of high-areal-loading sulfur cathodes. More importantly, this electrolyte forms a stable solid-electrolyte interphase (SEI) layer on graphite surface and thus enables remarkable cyclability of graphite anodes. By coupling prelithiated graphite anodes with sulfur cathodes with high areal capacity of ∼3 mAh cm-2, we demonstrate prelithiated graphite/sulfur batteries that show high sulfur-specific capacity of ∼1000 mAh g-1 and an excellent capacity retention of >65% after 450 cycles at C/10.

UR - http://www.scopus.com/inward/record.url?scp=85014139559&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85014139559&partnerID=8YFLogxK

U2 - 10.1021/acsami.6b11008

DO - 10.1021/acsami.6b11008

M3 - Article

C2 - 28157286

AN - SCOPUS:85014139559

VL - 9

SP - 6959

EP - 6966

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 8

ER -