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 study, 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. Lastly, 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.
- Authors:
-
[1];
[1]
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Mechanical and Nuclear Engineering
- Publication Date:
- Research Org.:
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Mechanical and Nuclear Engineering
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- OSTI Identifier:
- 1435968
- Report Number(s):
- DOE-PENNSTATE-0007795
Journal ID: ISSN 1944-8244; PII:974; TRN: US1900117
- Grant/Contract Number:
- EE0007795; EE0005475
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- ACS Applied Materials and Interfaces
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 8; Journal ID: ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; 42 ENGINEERING; batteries; fluorinated electrolytes; graphite; lithium/sulfur; prelithiated
Citation Formats
Chen, Shuru, Yu, Zhaoxin, Gordin, Mikhail L., Yi, Ran, Song, Jiangxuan, and Wang, Donghai. A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries. United States: N. p., 2017.
Web. doi:10.1021/acsami.6b11008.
Chen, Shuru, Yu, Zhaoxin, Gordin, Mikhail L., Yi, Ran, Song, Jiangxuan, & Wang, Donghai. A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries. United States. https://doi.org/10.1021/acsami.6b11008
Chen, Shuru, Yu, Zhaoxin, Gordin, Mikhail L., Yi, Ran, Song, Jiangxuan, and Wang, Donghai. Fri .
"A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries". United States. https://doi.org/10.1021/acsami.6b11008. https://www.osti.gov/servlets/purl/1435968.
@article{osti_1435968,
title = {A Fluorinated Ether Electrolyte Enabled High Performance Prelithiated Graphite/Sulfur Batteries},
author = {Chen, Shuru and Yu, Zhaoxin and Gordin, Mikhail L. and Yi, Ran and Song, Jiangxuan and Wang, Donghai},
abstractNote = {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 study, 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. Lastly, 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.},
doi = {10.1021/acsami.6b11008},
url = {https://www.osti.gov/biblio/1435968},
journal = {ACS Applied Materials and Interfaces},
issn = {1944-8244},
number = 8,
volume = 9,
place = {United States},
year = {2017},
month = {2}
}
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Figures / Tables:
Figure 1: (a, b) The discharge-charge profiles and (c) cycling performance of Li/S half cells in conventional DOL/DME and DOL/BTFE electrolytes at C/10 with sulfur loading ~2 mg cm -2. (d) Photos demonstrating (A) the dissolution of 0.25 M Li 2S 8 in the DME/DOL electrolyte and (B) the relativemore »
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Works referencing / citing this record:
Toward High Performance Lithium-Sulfur Batteries Based on Li 2 S Cathodes and Beyond: Status, Challenges, and Perspectives
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