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Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries

[Image: see text] Lithium–metal batteries employing concentrated glyme-based electrolytes and two different cathode chemistries are herein evaluated in view of a safe use of the highly energetic alkali-metal anode. Indeed, diethylene-glycol dimethyl-ether (DEGDME) and triethylene-glycol dimethyl-eth...

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Autores principales: Marangon, Vittorio, Minnetti, Luca, Adami, Matteo, Barlini, Alberto, Hassoun, Jusef
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8279017/
https://www.ncbi.nlm.nih.gov/pubmed/34276126
http://dx.doi.org/10.1021/acs.energyfuels.1c00927
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author Marangon, Vittorio
Minnetti, Luca
Adami, Matteo
Barlini, Alberto
Hassoun, Jusef
author_facet Marangon, Vittorio
Minnetti, Luca
Adami, Matteo
Barlini, Alberto
Hassoun, Jusef
author_sort Marangon, Vittorio
collection PubMed
description [Image: see text] Lithium–metal batteries employing concentrated glyme-based electrolytes and two different cathode chemistries are herein evaluated in view of a safe use of the highly energetic alkali-metal anode. Indeed, diethylene-glycol dimethyl-ether (DEGDME) and triethylene-glycol dimethyl-ether (TREGDME) dissolving lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium nitrate (LiNO(3)) in concentration approaching the solvents saturation limit are used in lithium batteries employing either a conversion sulfur–tin composite (S:Sn 80:20 w/w) or a Li(+) (de)insertion LiFePO(4) cathode. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) clearly show the suitability of the concentrated electrolytes in terms of process reversibility and low interphase resistance, particularly upon a favorable activation. Galvanostatic measurements performed on lithium–sulfur (Li/S) batteries reveal promising capacities at room temperature (25 °C) and a value as high as 1300 mAh g(S)(–1) for the cell exploiting the DEGDME-based electrolyte at 35 °C. On the other hand, the lithium–LiFePO(4) (Li/LFP) cells exhibit satisfactory cycling behavior, in particular when employing an additional reduction step at low voltage cutoff (i.e., 1.2 V) during the first discharge to consolidate the solid electrolyte interphase (SEI). This procedure allows a Coulombic efficiency near 100%, a capacity approaching 160 mAh g(–1), and relevant retention particularly for the cell using the TREGDME-based electrolyte. Therefore, this work suggests the use of concentrated glyme-based electrolytes, the fine-tuning of the operative conditions, and the careful selection of active materials chemistry as significant steps to achieve practical and safe lithium–metal batteries.
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spelling pubmed-82790172021-07-15 Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries Marangon, Vittorio Minnetti, Luca Adami, Matteo Barlini, Alberto Hassoun, Jusef Energy Fuels [Image: see text] Lithium–metal batteries employing concentrated glyme-based electrolytes and two different cathode chemistries are herein evaluated in view of a safe use of the highly energetic alkali-metal anode. Indeed, diethylene-glycol dimethyl-ether (DEGDME) and triethylene-glycol dimethyl-ether (TREGDME) dissolving lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium nitrate (LiNO(3)) in concentration approaching the solvents saturation limit are used in lithium batteries employing either a conversion sulfur–tin composite (S:Sn 80:20 w/w) or a Li(+) (de)insertion LiFePO(4) cathode. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) clearly show the suitability of the concentrated electrolytes in terms of process reversibility and low interphase resistance, particularly upon a favorable activation. Galvanostatic measurements performed on lithium–sulfur (Li/S) batteries reveal promising capacities at room temperature (25 °C) and a value as high as 1300 mAh g(S)(–1) for the cell exploiting the DEGDME-based electrolyte at 35 °C. On the other hand, the lithium–LiFePO(4) (Li/LFP) cells exhibit satisfactory cycling behavior, in particular when employing an additional reduction step at low voltage cutoff (i.e., 1.2 V) during the first discharge to consolidate the solid electrolyte interphase (SEI). This procedure allows a Coulombic efficiency near 100%, a capacity approaching 160 mAh g(–1), and relevant retention particularly for the cell using the TREGDME-based electrolyte. Therefore, this work suggests the use of concentrated glyme-based electrolytes, the fine-tuning of the operative conditions, and the careful selection of active materials chemistry as significant steps to achieve practical and safe lithium–metal batteries. American Chemical Society 2021-05-20 2021-06-17 /pmc/articles/PMC8279017/ /pubmed/34276126 http://dx.doi.org/10.1021/acs.energyfuels.1c00927 Text en © 2021 The Authors. Published by American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Marangon, Vittorio
Minnetti, Luca
Adami, Matteo
Barlini, Alberto
Hassoun, Jusef
Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries
title Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries
title_full Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries
title_fullStr Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries
title_full_unstemmed Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries
title_short Lithium–Metal Batteries Using Sustainable Electrolyte Media and Various Cathode Chemistries
title_sort lithium–metal batteries using sustainable electrolyte media and various cathode chemistries
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8279017/
https://www.ncbi.nlm.nih.gov/pubmed/34276126
http://dx.doi.org/10.1021/acs.energyfuels.1c00927
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AT barlinialberto lithiummetalbatteriesusingsustainableelectrolytemediaandvariouscathodechemistries
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