Regulating the Hidden Solvation‐Ion‐Exchange in Concentrated Electrolytes for Stable and Safe Lithium Metal Batteries
Abstract
Lithium-sulfur batteries are attractive for automobile and grid applications due to their high theoretical energy density and the abundance of sulfur. Despite the significant progress in cathode development, lithium metal degradation and the polysulfide shuttle remain two critical challenges in the practical application of Li-S batteries. Development of advanced electrolytes has become a promising strategy to simultaneously suppress lithium dendrite formation and prevent polysulfide dissolution. Here, a new class of concentrated siloxane-based electrolytes, demonstrating significantly improved performance over the widely investigated ether-based electrolytes are reported in terms of stabilizing the sulfur cathode and Li metal anode as well as minimizing flammability. Through a combination of experimental and computational investigation, it is found that siloxane solvents can effectively regulate a hidden solvation-ion-exchange process in the concentrated electrolytes that results from the interactions between cations/anions (e.g., Li+, TFSI-, and S2-) and solvents. As a result, it could invoke a quasi-solid-solid lithiation and enable reversible Li plating/stripping and robust solid-electrolyte interphase chemistries. The solvation-ion-exchange process in the concentrated electrolytes is a key factor in understanding and designing electrolytes for other high-energy lithium metal batteries.
- Authors:
-
[10];
- Department of Chemical EngineeringUniversity of Illinois at Chicago Chicago IL 60607 USA, Materials Science DivisionArgonne National Laboratory Lemont IL 60439 USA
- Chemical Sciences and Engineering DivisionArgonne National Laboratory 9700 S Cass Avenue Lemont IL 60439 USA, Department of ChemistryVirginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
- Institute of Non‐Ferrous Metals Division in Poznan Central Laboratory of Batteries and Cells Forteczna 12 Poznan 61‐362 Poland
- College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P. R. China
- State Key Laboratory of Heavy Oil ProcessingInstitute of New EnergyChina University of Petroleum‐Beijing Beijing 102249 P. R. China
- X‐ray Science DivisionArgonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA
- Poznan University of Technology Pl. Marii Sklodowskiej‐Curie 5 Poznan 60‐965 Poland
- Department of ChemistryCollege of ScienceUniversity of Jeddah P.O. 80327 Jeddah 21589 Saudi Arabia
- Chemical Sciences and Engineering DivisionArgonne National Laboratory 9700 S Cass Avenue Lemont IL 60439 USA
- Chemical Sciences and Engineering DivisionArgonne National Laboratory 9700 S Cass Avenue Lemont IL 60439 USA, Materials Science and EngineeringStanford University Stanford CA 94305 USA, IRMCImam Abdulrahman Bin Faisal University (IAU) Dammam 34212 Saudi Arabia
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); University of Jeddah; European Commission (EC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office - Battery Materials Research (BMR) Program; European Research Council (ERC); Polish Ministry of Science and Education
- OSTI Identifier:
- 1631482
- Alternate Identifier(s):
- OSTI ID: 1631483; OSTI ID: 1658598
- Grant/Contract Number:
- AC02‐06CH11357; AC02-06CH11357; 3787/E‐138/S/2017
- Resource Type:
- Published Article
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Name: Advanced Energy Materials Journal Volume: 10 Journal Issue: 25; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley
- Country of Publication:
- Germany
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; Concentrated electrolytes; lithium metal batteries; siloxanes; solvation-ion-exchange; sulfur
Citation Formats
Amine, Rachid, Liu, Jianzhao, Acznik, Ilona, Sheng, Tian, Lota, Katarzyna, Sun, Hui, Sun, Cheng‐Jun, Fic, Krzysztof, Zuo, Xiaobing, Ren, Yang, EI‐Hady, Deia Abd, Alshitari, Wael, Al‐Bogami, Abdullah S., Chen, Zonghai, Amine, Khalil, and Xu, Gui‐Liang. Regulating the Hidden Solvation‐Ion‐Exchange in Concentrated Electrolytes for Stable and Safe Lithium Metal Batteries. Germany: N. p., 2020.
Web. doi:10.1002/aenm.202000901.
Amine, Rachid, Liu, Jianzhao, Acznik, Ilona, Sheng, Tian, Lota, Katarzyna, Sun, Hui, Sun, Cheng‐Jun, Fic, Krzysztof, Zuo, Xiaobing, Ren, Yang, EI‐Hady, Deia Abd, Alshitari, Wael, Al‐Bogami, Abdullah S., Chen, Zonghai, Amine, Khalil, & Xu, Gui‐Liang. Regulating the Hidden Solvation‐Ion‐Exchange in Concentrated Electrolytes for Stable and Safe Lithium Metal Batteries. Germany. https://doi.org/10.1002/aenm.202000901
Amine, Rachid, Liu, Jianzhao, Acznik, Ilona, Sheng, Tian, Lota, Katarzyna, Sun, Hui, Sun, Cheng‐Jun, Fic, Krzysztof, Zuo, Xiaobing, Ren, Yang, EI‐Hady, Deia Abd, Alshitari, Wael, Al‐Bogami, Abdullah S., Chen, Zonghai, Amine, Khalil, and Xu, Gui‐Liang. Tue .
"Regulating the Hidden Solvation‐Ion‐Exchange in Concentrated Electrolytes for Stable and Safe Lithium Metal Batteries". Germany. https://doi.org/10.1002/aenm.202000901.
@article{osti_1631482,
title = {Regulating the Hidden Solvation‐Ion‐Exchange in Concentrated Electrolytes for Stable and Safe Lithium Metal Batteries},
author = {Amine, Rachid and Liu, Jianzhao and Acznik, Ilona and Sheng, Tian and Lota, Katarzyna and Sun, Hui and Sun, Cheng‐Jun and Fic, Krzysztof and Zuo, Xiaobing and Ren, Yang and EI‐Hady, Deia Abd and Alshitari, Wael and Al‐Bogami, Abdullah S. and Chen, Zonghai and Amine, Khalil and Xu, Gui‐Liang},
abstractNote = {Lithium-sulfur batteries are attractive for automobile and grid applications due to their high theoretical energy density and the abundance of sulfur. Despite the significant progress in cathode development, lithium metal degradation and the polysulfide shuttle remain two critical challenges in the practical application of Li-S batteries. Development of advanced electrolytes has become a promising strategy to simultaneously suppress lithium dendrite formation and prevent polysulfide dissolution. Here, a new class of concentrated siloxane-based electrolytes, demonstrating significantly improved performance over the widely investigated ether-based electrolytes are reported in terms of stabilizing the sulfur cathode and Li metal anode as well as minimizing flammability. Through a combination of experimental and computational investigation, it is found that siloxane solvents can effectively regulate a hidden solvation-ion-exchange process in the concentrated electrolytes that results from the interactions between cations/anions (e.g., Li+, TFSI-, and S2-) and solvents. As a result, it could invoke a quasi-solid-solid lithiation and enable reversible Li plating/stripping and robust solid-electrolyte interphase chemistries. The solvation-ion-exchange process in the concentrated electrolytes is a key factor in understanding and designing electrolytes for other high-energy lithium metal batteries.},
doi = {10.1002/aenm.202000901},
journal = {Advanced Energy Materials},
number = 25,
volume = 10,
place = {Germany},
year = {Tue Jun 02 00:00:00 EDT 2020},
month = {Tue Jun 02 00:00:00 EDT 2020}
}
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