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Zhang S, Jiang DE, Zhou N, Tang J, Zhang K, Li Y, Hu J, Peng C, Liu H, Yang B, Yao Y. Ionic liquids intercalation in titanium carbide MXenes: A first-principles investigation. J Comput Chem 2024; 45:2294-2307. [PMID: 38847556 DOI: 10.1002/jcc.27444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/24/2024] [Accepted: 05/23/2024] [Indexed: 08/15/2024]
Abstract
Herein, we present a density functional theory with dispersion correction (DFT-D) calculations that focus on the intercalation of ionic liquids (ILs) electrolytes into the two-dimensional (2D) Ti3C2Tx MXenes. These ILs include the cation 1-ethyl-3-methylimidazolium (Emim+), accompanied by three distinct anions: bis(trifluoromethylsulfonyl)imide (TFSA-), (fluorosulfonyl)imide (FSA-) and fluorosulfonyl(trifluoromethanesulfonyl)imide (FTFSA-). By altering the surface termination elements, we explore the intricate geometries of IL intercalation in neutral, negative, and positive pore systems. Accurate estimation of charge transfer is achieved through five population analysis models, such as Hirshfeld, Hirshfeld-I, DDEC6 (density derived electrostatic and chemical), Bader, and VDD (voronoi deformation density) charges. In this work, we recommend the DDEC6 and Hirshfeld-I charge models, as they offer moderate values and exhibit reasonable trends. The investigation, aimed at visualizing non-covalent interactions, elucidates the role of cation-MXene and anion-MXene interactions in governing the intercalation phenomenon of ionic liquids within MXenes. The magnitude of this role depends on two factors: the specific arrangement of the cation, and the nature of the anionic species involved in the process.
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Affiliation(s)
- Shaoze Zhang
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - De-En Jiang
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee, USA
| | - Nan Zhou
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - Jiaxing Tang
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - Keyu Zhang
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - Yin Li
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - Junxian Hu
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - Changjun Peng
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Honglai Liu
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Bin Yang
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
| | - Yaochun Yao
- National Engineering Research Center of Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, China
- Engineering Laboratory for Advanced Battery and Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, China
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2
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Cao X, Han Q, Han R, Zhang S, Wang M, Zhang Z, Zhong C. Integrating Multiscale Simulation with Machine Learning to Screen and Design FIL@COFs for Ethane-Selective Separation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27360-27367. [PMID: 38755957 DOI: 10.1021/acsami.4c03089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
Efficient and economical separation of C2H6/C2H4 is an imperative and extremely challenging process in the petrochemical industry. The C2H6-selective adsorbents with high working capacity and high selectivity are highly desirable from a practical application standpoint. In this study, we constructed a database of fluorinated ionic liquid@covalent organic frameworks (FIL@COFs) and screened out the high-performing FIL@COFs for C2H6-selective separation. Utilizing the optimal machine learning (ML) algorithm (XGBoost) and hyperparameters, we further revealed the key factors influencing the separation performance. The multiscale simulation not only validated the prediction accuracy of ML but also demonstrated that adjusting the largest cavity diameter of COFs with FILs could yield FIL@COFs with high performance for C2H6-selective separation. Our work provides essential guidance for designing new FIL@COF adsorbents for value-added gas purification.
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Affiliation(s)
- Xiaohao Cao
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Material Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Qi Han
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, P. R. China
| | - Rongmei Han
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, P. R. China
| | - Shitong Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, P. R. China
| | - Min Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, P. R. China
| | - Zhengqing Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, P. R. China
| | - Chongli Zhong
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, P. R. China
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3
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Wang S, Li Z, Yang G, Lin J, Xu Q. Molecular dynamics study of fluorosulfonyl ionic liquids as electrolyte for electrical double layer capacitors. RSC Adv 2023; 13:29886-29893. [PMID: 37842684 PMCID: PMC10571016 DOI: 10.1039/d3ra04798a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/29/2023] [Indexed: 10/17/2023] Open
Abstract
The development of high-performance supercapacitors is an important goal in the field of energy storage. Ionic liquids (ILs) are promising electrolyte materials for efficient energy storage in supercapacitors, because of the high stability, low volatility, and wider electrochemical stability window than traditional electrolytes. However, ILs-based supercapacitors usually show a relatively lower power density owing to the inherent viscosity-induced low electrical conductivity. Fluorosulfonyl ILs have aroused much attention in energy storage devices due to its low toxicity and excellent stability. Here, we propose that structural modification is an effective way to improve the energy storage performance of fluorosulfonyl ILs through the classical molecular dynamics (MD) method. Four fluorosulfonyl ILs with different sizes and symmetries were considered. Series of properties including conductivity, interface structure, and double-layer capacitance curves were systematically investigated. The results show that smaller size and more asymmetric structure can enhance self-diffusion coefficient and conductivity, and improve the electrochemical performance. Appropriate modification of the electrodes can further enhance the capacitive performance. Our work provides an opportunity to further understand and develop the fluorosulfonyl ILs electrolyte in supercapacitors.
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Affiliation(s)
- Siqi Wang
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Zhuo Li
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Guangmin Yang
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Jianyan Lin
- College of Physics, Changchun Normal University Changchun 130032 China
| | - Qiang Xu
- College of Prospecting and Surveying Engineering, Changchun Institute of Technology Changchun 130021 China
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4
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Holoubek J, Yu K, Wu J, Wang S, Li M, Gao H, Hui Z, Hyun G, Yin Y, Mu AU, Kim K, Liu A, Yu S, Pascal TA, Liu P, Chen Z. Toward a quantitative interfacial description of solvation for Li metal battery operation under extreme conditions. Proc Natl Acad Sci U S A 2023; 120:e2310714120. [PMID: 37782794 PMCID: PMC10576153 DOI: 10.1073/pnas.2310714120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/17/2023] [Indexed: 10/04/2023] Open
Abstract
The future application of Li metal batteries (LMBs) at scale demands electrolytes that endow improved performance under fast-charging and low-temperature operating conditions. Recent works indicate that desolvation kinetics of Li+ plays a crucial role in enabling such behavior. However, the modulation of this process has typically been achieved through inducing qualitative degrees of ion pairing into the system. In this work, we find that a more quantitative control of the ion pairing is crucial to minimizing the desolvation penalty at the electrified interface and thus the reversibility of the Li metal anode under kinetic strain. This effect is demonstrated in localized electrolytes based on strongly and weakly bound ether solvents that allow for the deconvolution of solvation chemistry and structure. Unexpectedly, we find that maximum degrees of ion pairing are suboptimal for ultralow temperature and high-rate operation and that reversibility is substantially improved via slight local dilution away from the saturation point. Further, we find that at the optimum degree of ion pairing for each system, weakly bound solvents still produce superior behavior. The impact of these structure and chemistry effects on charge transfer are then explicitly resolved via experimental and computational analyses. Lastly, we demonstrate that the locally optimized diethyl ether-based localized-high-concentration electrolytes supports kinetic strained operating conditions, including cycling down to -60 °C and 20-min fast charging in LMB full cells. This work demonstrates that explicit, quantitative optimization of the Li+ solvation state is necessary for developing LMB electrolytes capable of low-temperature and high-rate operation.
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Affiliation(s)
- John Holoubek
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Kunpeng Yu
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Junlin Wu
- Program of Materials Science and Engineering, University of California San Diego, CA92093
| | - Shen Wang
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Mingqian Li
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Hongpeng Gao
- Program of Materials Science and Engineering, University of California San Diego, CA92093
| | - Zeyu Hui
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Gayea Hyun
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Yijie Yin
- Program of Materials Science and Engineering, University of California San Diego, CA92093
| | - Anthony U. Mu
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Kangwoon Kim
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Alex Liu
- Department of NanoEngineering, University of California San Diego, CA92093
| | - Sicen Yu
- Program of Materials Science and Engineering, University of California San Diego, CA92093
| | - Tod A. Pascal
- Department of NanoEngineering, University of California San Diego, CA92093
- Program of Materials Science and Engineering, University of California San Diego, CA92093
- Sustainable Power and Energy Center, University of California, San Diego, CA92093
| | - Ping Liu
- Department of NanoEngineering, University of California San Diego, CA92093
- Program of Materials Science and Engineering, University of California San Diego, CA92093
- Sustainable Power and Energy Center, University of California, San Diego, CA92093
| | - Zheng Chen
- Department of NanoEngineering, University of California San Diego, CA92093
- Program of Materials Science and Engineering, University of California San Diego, CA92093
- Sustainable Power and Energy Center, University of California, San Diego, CA92093
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5
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Fortuin BA, Otegi J, López Del Amo JM, Peña SR, Meabe L, Manzano H, Martínez-Ibañez M, Carrasco J. Synergistic theoretical and experimental study on the ion dynamics of bis(trifluoromethanesulfonyl)imide-based alkali metal salts for solid polymer electrolytes. Phys Chem Chem Phys 2023; 25:25038-25054. [PMID: 37698851 DOI: 10.1039/d3cp02989a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Model validation of a well-known class of solid polymer electrolyte (SPE) is utilized to predict the ionic structure and ion dynamics of alternative alkali metal ions, leading to advancements in Na-, K-, and Cs-based SPEs for solid-state alkali metal batteries. A comprehensive study based on molecular dynamics (MD) is conducted to simulate ion coordination and the ion transport properties of poly(ethylene oxide) (PEO) with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt across various LiTFSI concentrations. Through validation of the MD simulation results with experimental techniques, we gain a deeper understanding of the ionic structure and dynamics in the PEO/LiTFSI system. This computational approach is then extended to predict ion coordination and transport properties of alternative alkali metal ions. The ionic structure in PEO/LiTFSI is significantly influenced by the LiTFSI concentration, resulting in different lithium-ion transport mechanisms for highly concentrated or diluted systems. Substituting lithium with sodium, potassium, and cesium reveals a weaker cation-PEO coordination for the larger cesium-ion. However, sodium-ion based SPEs exhibit the highest cation transport number, indicating the crucial interplay between salt dissociation and cation-PEO coordination for achieving optimal performance in alkali metal SPEs.
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Affiliation(s)
- Brigette Althea Fortuin
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
- ALISTORE-European Research Institute, CNRS FR 3104, Hub de l'Energie, Rue Baudelocque, 80039 Amiens Cedex, France
| | - Jon Otegi
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
| | - Juan Miguel López Del Amo
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
| | - Sergio Rodriguez Peña
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
| | - Leire Meabe
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
| | - Hegoi Manzano
- Department of Physics, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain.
| | - María Martínez-Ibañez
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
| | - Javier Carrasco
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.
- IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
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6
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Tamate R, Peng Y, Kamiyama Y, Nishikawa K. Extremely Tough, Stretchable Gel Electrolytes with Strong Interpolymer Hydrogen Bonding Prepared Using Concentrated Electrolytes to Stabilize Lithium-Metal Anodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2211679. [PMID: 37073627 DOI: 10.1002/adma.202211679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/21/2023] [Indexed: 05/03/2023]
Abstract
Extremely tough and stretchable gel electrolytes, which can be prepared by leveraging the strong interpolymer hydrogen bonding in concentrated lithium (Li)-salt electrolytes, are reported. These electrolytes can be realized by optimizing the competitive hydrogen-bonding interactions between polymer chains, solvent molecules, Li cations, and counteranions. Free polar solvent molecules, which typically impede interpolymer hydrogen bonding, are scarce in concentrated electrolytes; this feature can be exploited to prepare hydrogen-bonded gel electrolytes with unprecedented toughness. In contrast, free solvent molecules are abundant in electrolytes with typical concentrations, yielding considerably weaker gel electrolytes. The tough gel electrolyte can be used an artificial protective layer for Li-metal anodes, as it considerably enhances the cycling stability of a Li symmetric cell through uniform Li deposition/dissolution. Additionally, employing the gel electrolyte as the protecting layer significantly improves the cycling performance of the Li||LiNi0.6 Co0.2 Mn0.2 O2 full cell.
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Affiliation(s)
- Ryota Tamate
- Center for Advanced Battery Collaboration, Center for Green Research on Energy and Environmental Materials, National Institute for Material Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yueying Peng
- Center for Advanced Battery Collaboration, Center for Green Research on Energy and Environmental Materials, National Institute for Material Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yuji Kamiyama
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Kei Nishikawa
- Center for Advanced Battery Collaboration, Center for Green Research on Energy and Environmental Materials, National Institute for Material Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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7
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Ando M, Ohta K, Ishida T, Koido R, Shirota H. Physical Properties and Low-Frequency Polarizability Anisotropy and Dipole Responses of Phosphonium Bis(fluorosulfonyl)amide Ionic Liquids with Pentyl, Ethoxyethyl, or 2-(Ethylthio)ethyl Group. J Phys Chem B 2023; 127:542-556. [PMID: 36602430 DOI: 10.1021/acs.jpcb.2c07466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This study compared the physical properties, e.g., glass transition temperature, melting point, viscosity, density, surface tension, and electrical conductivity, and the low-frequency spectra under 200 cm-1 of three synthesized ionic liquids (ILs), triethylpentylphosphonium bis(fluorosulfonyl)amide ([P2225][NF2]), ethoxyethyltriethylphosphonium bis(fluorosulfonyl)amide ([P222(2O2)][NF2]), and triethyl[2-(ethylthio)ethyl]phosphonium bis(fluorosulfonyl)amide ([P222(2S2)][NF2]), at various temperatures using femtosecond Raman-induced Kerr effect spectroscopy (fs-RIKES) and terahertz time-domain spectroscopy (THz-TDS). The [P222(2S2)][NF2] had the highest viscosity and glass transition temperature, whereas the [P222(2O2)][NF2] had the lowest. Among the three ILs, the [P222(2S2)][NF2] had the highest density and surface tension, and the [P222(2O2)][NF2] had the highest electrical conductivity. The RIKES and THz-TDS spectral line shapes for the three ILs varied significantly. For the [P2225][NF2], molecular dynamics simulations successfully reproduced the line shapes of the experimental spectra and indicated that the RIKES spectrum was mainly due to the cation and cross-term and their rotational motions, whereas the THz-TDS spectrum was mainly due to the anion and its translational motion. This shows that it is desirable to utilize both fs-RIKES and THz-TDS methods to reveal molecular motions at the low-frequency domain. The [P222(2S2)][NF2] had higher frequency peaks and broader bands in the low-frequency spectra via fs-RIKES and THz-TDS than those for the [P2225][NF2] and [P222(2O2)][NF2].
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Affiliation(s)
- Masatoshi Ando
- Department of Chemistry, Chiba University, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
| | - Kaoru Ohta
- Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
| | - Tateki Ishida
- Department of Theoretical and Computational Molecular Science, Institute for Molecular Science and Research Center for Computational Science, 38 Nishigonaka, Myodaiji, Okazaki 444-8585, Japan
| | - Ryohei Koido
- Department of Chemistry, Chiba University, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
| | - Hideaki Shirota
- Department of Chemistry, Chiba University, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
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8
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Dzida M, Boncel S, Jóźwiak B, Greer HF, Dulski M, Scheller Ł, Golba A, Flamholc R, Dzido G, Dziadosz J, Kolanowska A, Jędrysiak R, Blacha A, Cwynar K, Zorębski E, Bernardes CE, Lourenço MJ, Nieto de Castro CA. High-Performance Ionanofluids from Subzipped Carbon Nanotube Networks. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50836-50848. [PMID: 36331877 PMCID: PMC9673059 DOI: 10.1021/acsami.2c14057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Investments in the transfer and storage of thermal energy along with renewable energy sources strengthen health and economic infrastructure. These factors intensify energy diversification and the more rapid post-COVID recovery of economies. Ionanofluids (INFs) composed of long multiwalled carbon nanotubes (MWCNTs) rich in sp2-hybridized atoms and ionic liquids (ILs) display excellent thermal conductivity enhancement with respect to the pure IL, high thermal stability, and attractive rheology. However, the influence of the morphology, physicochemistry of nanoparticles and the IL-nanostructure interactions on the mechanism of heat transfer and rheological properties of INFs remain unidentified. Here, we show that intertube nanolayer coalescence, supported by 1D geometry assembly, leads to the subzipping of MWCNT bundles and formation of thermal bridges toward 3D networks in the whole INF volume. We identified stable networks of straight and bent MWCNTs separated by a layer of ions at the junctions. We found that the interactions between the ultrasonication-induced breaking nanotubes and the cations were covalent in nature. Furthermore, we found that the ionic layer imposed by close MWCNT surfaces favored enrichment of the cis conformer of the bis(trifluoromethylsulfonyl)imide anion. Our results demonstrate how the molecular perfection of the MWCNT structure with its supramolecular arrangement affects the extraordinary thermal conductivity enhancement of INFs. Thus, we gave the realistic description of the interactions at the IL-CNT interface with its (super)structure and chemistry as well as the molecular structure of the continuous phase. We anticipate our results to be a starting point for more complex studies on the supramolecular zipping mechanism. For example, ionically functionalized MWCNTs toward polyionic systems─of projected and controlled nanolayers─could enable the design of even more efficient heat-transfer fluids and miniaturization of flexible electronics.
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Affiliation(s)
- Marzena Dzida
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, Katowice 40-006, Poland
| | - Sławomir Boncel
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Bolesława Krzywoustego 4, Gliwice 44-100, Poland
- Centre
for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, Gliwice 44-100, Poland
| | - Bertrand Jóźwiak
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Bolesława Krzywoustego 4, Gliwice 44-100, Poland
- Department
of Chemical Engineering and Process Design, Silesian University of Technology, Marcina Strzody 7, 44-100 Gliwice, Poland
| | - Heather F. Greer
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K.
| | - Mateusz Dulski
- Faculty of
Science and Technology, Institute of Materials Science, University of Silesia in Katowice, 75 Pułku Piechoty 1a, Chorzów 41-500, Poland
| | - Łukasz Scheller
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, Katowice 40-006, Poland
| | - Adrian Golba
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, Katowice 40-006, Poland
| | | | - Grzegorz Dzido
- Department
of Chemical Engineering and Process Design, Silesian University of Technology, Marcina Strzody 7, 44-100 Gliwice, Poland
| | - Justyna Dziadosz
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, Katowice 40-006, Poland
| | - Anna Kolanowska
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Bolesława Krzywoustego 4, Gliwice 44-100, Poland
- Department
of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Marcina Strzody 9, Gliwice 44-100, Poland
| | - Rafał Jędrysiak
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Bolesława Krzywoustego 4, Gliwice 44-100, Poland
- Centre
for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, Gliwice 44-100, Poland
| | - Anna Blacha
- Department
of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Bolesława Krzywoustego 4, Gliwice 44-100, Poland
- Centre
for Organic and Nanohybrid Electronics, Silesian University of Technology, Konarskiego 22B, Gliwice 44-100, Poland
| | - Krzysztof Cwynar
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, Katowice 40-006, Poland
| | - Edward Zorębski
- Institute
of Chemistry, University of Silesia in Katowice, Szkolna 9, Katowice 40-006, Poland
| | - Carlos E.S. Bernardes
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Maria José
V. Lourenço
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Carlos A. Nieto de Castro
- Centro
de Química Estrutural, Institute of Molecular Sciences, Departamento
de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
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9
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Ding K, Xu C, Peng Z, Long X, Shi J, Li Z, Zhang Y, Lai J, Chen L, Cai YP, Zheng Q. Tuning the Solvent Alkyl Chain to Tailor Electrolyte Solvation for Stable Li-Metal Batteries. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44470-44478. [PMID: 36130034 DOI: 10.1021/acsami.2c13517] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
1,2-Dimethoxyethane (DME) has been considered as the most promising electrolyte solvent for Li-metal batteries (LMBs). However, challenges arise from insufficient Li Coulombic efficiency (CE) and poor anodic stability associated with DME-based electrolytes. Here, we proposed a rational molecular design methodology to tailor electrolyte solvation for stable LMBs, where shortening the middle alkyl chain of the solvent could reduce the chelation ability, while increasing the terminal alkyl chain of the solvent could increase the steric hindrance, affording a diethoxymethane (DEM) solvent with ultra-weak solvation ability. When serving as a single solvent for electrolyte, a peculiar solvation structure dominated by contact ion pairs (CIPs) and aggregates (AGGs) was achieved even at a regular salt concentration of 1 m, which gives rise to anion-derived interfacial chemistry. This illustrates an unprecedentedly high Li||Cu CE of 99.1% for a single-salt single-solvent (non-fluorinated) electrolyte at ∼1 m. Moreover, this 1 m DEM-based electrolyte also remarkably suppresses the anodic dissolution of Al current collectors and significantly improves the cycling performance of high-voltage cathodes. This work opens up new frontiers in engineering electrolytes toward stable LMBs with high energy densities.
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Affiliation(s)
- Kui Ding
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Chao Xu
- MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China
| | - Zehang Peng
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Xin Long
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Junkai Shi
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Zhongliang Li
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Yuping Zhang
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Jiawei Lai
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Luyi Chen
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Yue-Peng Cai
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
| | - Qifeng Zheng
- School of Chemistry, Guangzhou Key Laboratory of Materials for Energy Conversion and Storage, South China Normal University, Guangzhou 510006, Guangdong, China
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10
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Microstructures of Hydrophobic Ionic Liquids via Tuning Water Networks: Theoretical and Experimental Investigations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Philippi F, Rauber D, Palumbo O, Goloviznina K, McDaniel J, Pugh D, Suarez S, Fraenza CC, Padua A, Kay CWM, Welton T. Flexibility is the key to tuning the transport properties of fluorinated imide-based ionic liquids. Chem Sci 2022; 13:9176-9190. [PMID: 36093026 PMCID: PMC9384794 DOI: 10.1039/d2sc03074h] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/02/2022] [Indexed: 11/21/2022] Open
Abstract
Ionic liquids are becoming increasingly popular for practical applications such as biomass processing and lithium-ion batteries. However, identifying ionic liquids with optimal properties for specific applications by trial and error is extremely inefficient since there are a vast number of potential candidate ions. Here we combine experimental and computational techniques to determine how the interplay of fluorination, flexibility and mass affects the transport properties of ionic liquids with the popular imide anion. We observe that fluorination and flexibility have a large impact on properties such as viscosity, whereas the influence of mass is negligible. Using targeted modifications, we show that conformational flexibility provides a significant contribution to the success of fluorination as a design element. Contrary to conventional wisdom, fluorination by itself is thus not a guarantor for beneficial properties such as low viscosity.
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Affiliation(s)
- Frederik Philippi
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London White City Campus London W12 0BZ UK
| | - Daniel Rauber
- Department of Chemistry, Saarland University Campus B2.2 Saarbrücken Germany
| | - Oriele Palumbo
- Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi Piazzale Aldo Moro 5 00185 Rome Italy
| | | | - Jesse McDaniel
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
| | - David Pugh
- Department of Chemistry, King's College London 7 Trinity Street London SE1 1DB UK
| | - Sophia Suarez
- Department of Physics, Brooklyn College of CUNY Brooklyn New York 11210 USA
| | - Carla C Fraenza
- Department of Physics and Astronomy, Hunter College of CUNY New York 10065 USA
| | - Agilio Padua
- Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS 69364 Lyon France
| | - Christopher W M Kay
- Department of Chemistry, Saarland University Campus B2.2 Saarbrücken Germany
- London Centre for Nanotechnology, University College London 17-19 Gordon Street London WC1H 0AH UK
| | - Tom Welton
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London White City Campus London W12 0BZ UK
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12
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Li J, He R, Yuan H, Fang F, Zhou G, Yang Z. Molecular Insights into the Effect of Asymmetric Anions on Lithium Coordination and Transport Properties in Salt-Doped Poly(ionic liquid) Electrolytes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiajia Li
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Ruiyao He
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Hao Yuan
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Fang Fang
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Guobing Zhou
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
| | - Zhen Yang
- Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People’s Republic of China
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13
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Abstract
All-climate temperature operation capability and increased energy density have been recognized as two crucial targets, but they are rarely achieved together in rechargeable lithium (Li) batteries. Herein, we demonstrate an electrolyte system by using monodentate dibutyl ether with both low melting and high boiling points as the sole solvent. Its weak solvation endows an aggregate solvation structure and low solubility toward polysulfide species in a relatively low electrolyte concentration (2 mol L-1). These features were found to be vital in avoiding dendrite growth and enabling Li metal Coulombic efficiencies of 99.0%, 98.2%, and 98.7% at 23 °C, -40 °C, and 50 °C, respectively. Pouch cells employing thin Li metal (50 μm) and high-loading sulfurized polyacrylonitrile (3.3 mAh cm-2) cathodes (negative-to-positive capacity ratio = 2) output 87.5% and 115.9% of their room temperature capacity at -40 °C and 50 °C, respectively. This work provides solvent-based design criteria for a wide temperature range Li-sulfur pouch cells.
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14
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Chen Z, Li Z, Zhao W, Matsumoto RA, Thompson MW, Morales-Collazo O, Cummings PT, Mangolini F, Brennecke JF. Investigation of Multilayered Structures of Ionic Liquids on Graphite and Platinum Using Atomic Force Microscopy and Molecular Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:4036-4047. [PMID: 35313730 DOI: 10.1021/acs.langmuir.2c00024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The molecular-level orientation and structure of ionic liquids (ILs) at liquid-solid interfaces are significantly different than in the bulk. The interfacial ordering influences both IL properties, such as dielectric constants and viscosity, and their efficacy in devices, such as fuel cells and electrical capacitors. Here, we report the layered structures of four ILs on unbiased, highly ordered pyrolytic graphite (HOPG) and Pt(111) surfaces, as determined by atomic force microscopy. The ILs investigated are 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-ethyl-3-methylimidazolium perfluorobutylsulfonate ([emim][C4F9SO3]), 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene bis(trifluoromethylsulfonyl)imide ([MTBD][Tf2N]), and 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene perfluorobutylsulfonate ([MTBD][C4F9SO3]). Molecular dynamics simulations provide complementary information on the position and orientation of the ions. These ILs form a cation layer at the IL-solid interface, followed by a layer of anions. [Emim]+ and [MTBD]+ have similar orientations at the surface, but [MTBD]+ forms a thinner layer compared to [emim]+ on both HOPG and Pt(111). In addition, [Tf2N]- shows stronger interactions with Pt(111) surfaces than [C4F9SO3]-.
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Affiliation(s)
- Zhichao Chen
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Zixuan Li
- Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
- Materials Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Wei Zhao
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ray A Matsumoto
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Matthew W Thompson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Oscar Morales-Collazo
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Peter T Cummings
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Filippo Mangolini
- Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Joan F Brennecke
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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15
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Wettstein A, Diddens D, Heuer A. Controlling Li + transport in ionic liquid electrolytes through salt content and anion asymmetry: a mechanistic understanding gained from molecular dynamics simulations. Phys Chem Chem Phys 2022; 24:6072-6086. [PMID: 35212346 DOI: 10.1039/d1cp04830a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this work, we report the results from molecular dynamics simulations of lithium salt-ionic liquid electrolytes (ILEs) based either on the symmetric bis[(trifluoromethyl)sulfonyl]imide (TFSI-) anion or its asymmetric analogue 2,2,2-(trifluoromethyl)sulfonyl-N-cyanoamide (TFSAM-). Relating lithium's coordination environment to anion mean residence times and diffusion constants confirms the remarkable transport behaviour of the TFSAM--based ILEs that has been observed in recent experiments: for increased salt doping, the lithium ions must compete for the more attractive cyano over oxygen coordination and a fragmented landscape of solvation geometries emerges, in which lithium appears to be less strongly bound. We present a novel, yet statistically straightforward methodology to quantify the extent to which lithium and its solvation shell are dynamically coupled. By means of a Lithium Coupling Factor (LCF) we demonstrate that the shell anions do not constitute a stable lithium vehicle, which suggests for this electrolyte material the commonly termed "vehicular" lithium transport mechanism could be more aptly pictured as a correlated, flow-like motion of lithium and its neighbourhood. Our analysis elucidates two separate causes why lithium and shell dynamics progressively decouple with higher salt content: on the one hand, an increased sharing of anions between lithium limits the achievable LCF of individual lithium-anion pairs. On the other hand, weaker binding configurations naturally entail a lower dynamic stability of the lithium-anion complex, which is particularly relevant for the TFSAM--containing ILEs.
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Affiliation(s)
- Alina Wettstein
- Institut für physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany.
| | - Diddo Diddens
- Institut für Energie- und Klimaforschung, Ionics in Energy Storage, Helmholtz Institut Münster, Forschungszentrum Jülich, Corrensstraße 46, 48149 Münster, Germany
| | - Andreas Heuer
- Institut für physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, D-48149 Münster, Germany. .,Institut für Energie- und Klimaforschung, Ionics in Energy Storage, Helmholtz Institut Münster, Forschungszentrum Jülich, Corrensstraße 46, 48149 Münster, Germany
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16
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Philippi F, Goloviznina K, Gong Z, Gehrke S, Kirchner B, Pádua AAH, Hunt PA. Charge transfer and polarisability in ionic liquids: a case study. Phys Chem Chem Phys 2022; 24:3144-3162. [PMID: 35040843 DOI: 10.1039/d1cp04592j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The practical use of ionic liquids (ILs) is benefiting from a growing understanding of the underpinning structural and dynamic properties, facilitated through classical molecular dynamics (MD) simulations. The predictive and explanatory power of a classical MD simulation is inextricably linked to the underlying force field. A key aspect of the forcefield for ILs is the ability to recover charge based interactions. Our focus in this paper is on the description and recovery of charge transfer and polarisability effects, demonstrated through MD simulations of the widely used 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide [C4C1im][NTf2] IL. We study the charge distributions generated by a range of ab initio methods, and present an interpolation method for determining atom-wise scaled partial charges. Two novel methods for determining the mean field (total) charge transfer from anion to cation are presented. The impact of using different charge models and different partial charge scaling (unscaled, uniformly scaled, atom-wise scaled) are compared to fully polarisable simulations. We study a range of Drude particle explicitly polarisable potentials and shed light on the performance of current approaches to counter known problems. It is demonstrated that small changes in the charge description and MD methodology can have a significant impact; biasing some properties, while leaving others unaffected within the structural and dynamic domains.
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Affiliation(s)
- Frederik Philippi
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Kateryna Goloviznina
- Laboratoire de Chimie, École Normale Supérieure de Lyon & CNRS, 69364 Lyon, France
| | - Zheng Gong
- Laboratoire de Chimie, École Normale Supérieure de Lyon & CNRS, 69364 Lyon, France
| | - Sascha Gehrke
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4+6, D-53115 Bonn, Germany.,Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Barbara Kirchner
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4+6, D-53115 Bonn, Germany
| | - Agílio A H Pádua
- Laboratoire de Chimie, École Normale Supérieure de Lyon & CNRS, 69364 Lyon, France
| | - Patricia A Hunt
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK.,School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand.
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17
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O’Rourke B, Lauderback C, Teodoro LI, Grimm M, Zeller M, Mirjafari A, Guillet GL, Hillesheim PC. Developing Structural First Principles for Alkylated Triphenylphosphonium-Based Ionic Liquids. ACS OMEGA 2021; 6:32285-32296. [PMID: 34870049 PMCID: PMC8638304 DOI: 10.1021/acsomega.1c05241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
While ionic liquids have proved to be versatile materials for a wide spectrum of applications, e.g., energy, materials, and medicine, several challenges remain concerning the rational design of novel materials. In light of this, a series of four triphenylphosphonium-based ionic liquids have been synthesized for the first time. These compounds exhibit high thermal stability with decomposition temperatures up to 450 °C. Their solid-state structures are characterized by single-crystal X-ray diffraction and the intermolecular interactions rigorously analyzed via Hirshfeld surface analysis. It was found that the unique geometries of the anions used in the study form distinct interactions with the cations. The interactions in the crystalline state are correlated with the thermal properties of the four ionic liquids to rationalize the melting points and phase transitions for each compound. The observed arrangements of the alkyl chains on the cations are investigated computationally to gain an understanding of how rotational freedom may impact the thermal properties of the compounds. By intention, each IL reported in this work offers a unique property profile and contributes to the ever-growing ionic liquid catalog.
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Affiliation(s)
- Brianna O’Rourke
- Department
of Chemistry and Physics, Ave Maria University, Ave Maria, Florida 34142, United States
| | - Clare Lauderback
- Department
of Chemistry and Physics, Ave Maria University, Ave Maria, Florida 34142, United States
| | - Lara I. Teodoro
- Department
of Chemistry and Physics, Ave Maria University, Ave Maria, Florida 34142, United States
| | - Morgan Grimm
- Department
of Chemistry and Physics, Ave Maria University, Ave Maria, Florida 34142, United States
| | - Matthias Zeller
- Department
of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Arsalan Mirjafari
- Department
of Chemistry and Physics, Florida Gulf Coast
University, Fort Myers, Florida 33965, United States
| | - Gary L. Guillet
- Department
of Chemistry and Biochemistry, Georgia Southern
University, Savannah, Georgia 31419, United
States
| | - Patrick C. Hillesheim
- Department
of Chemistry and Physics, Ave Maria University, Ave Maria, Florida 34142, United States
- Department
of Chemistry and Physics, Florida Gulf Coast
University, Fort Myers, Florida 33965, United States
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18
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Triolo A, Di Lisio V, Lo Celso F, Appetecchi GB, Fazio B, Chater P, Martinelli A, Sciubba F, Russina O. Liquid Structure of a Water-in-Salt Electrolyte with a Remarkably Asymmetric Anion. J Phys Chem B 2021; 125:12500-12517. [PMID: 34738812 PMCID: PMC9282637 DOI: 10.1021/acs.jpcb.1c06759] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Water-in-salt systems, i.e., super-concentrated aqueous electrolytes, such as lithium bis(trifluoromethanesulfonyl)imide (21 mol/kgwater), have been recently discovered to exhibit unexpectedly large electrochemical windows and high lithium transference numbers, thus paving the way to safe and sustainable charge storage devices. The peculiar transport features in these electrolytes are influenced by their intrinsically nanoseparated morphology, stemming from the anion hydrophobic nature and manifesting as nanosegregation between anions and water domains. The underlying mechanism behind this structure-dynamics correlation is, however, still a matter of strong debate. Here, we enhance the apolar nature of the anions, exploring the properties of the aqueous electrolytes of lithium salts with a strongly asymmetric anion, namely, (trifluoromethylsulfonyl)(nonafluorobutylsulfonyl) imide. Using a synergy of experimental and computational tools, we detect a remarkable level of structural heterogeneity at a mesoscopic level between anion-rich and water-rich domains. Such a ubiquitous sponge-like, bicontinuous morphology develops across the whole concentration range, evolving from large fluorinated globules at high dilution to a percolating fluorous matrix intercalated by water nanowires at super-concentrated regimes. Even at extremely concentrated conditions, a large population of fully hydrated lithium ions, with no anion coordination, is detected. One can then derive that the concomitant coexistence of (i) a mesoscopically segregated structure and (ii) fully hydrated lithium clusters disentangled from anion coordination enables the peculiar lithium diffusion features that characterize water-in-salt systems.
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Affiliation(s)
- Alessandro Triolo
- Laboratorio
Liquidi Ionici, Istituto Struttura della
Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome 00133, Italy
| | - Valerio Di Lisio
- Department
of Chemistry, University of Rome Sapienza, Rome 00185, Italy
| | - Fabrizio Lo Celso
- Laboratorio
Liquidi Ionici, Istituto Struttura della
Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome 00133, Italy
- Department
of Physics and Chemistry, Università
di Palermo, Palermo 90133, Italy
| | | | - Barbara Fazio
- Istituto
Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche (IPCF-CNR), Messina 98158, Italy
| | - Philip Chater
- Diamond House,
Harwell Science & Innovation Campus, Diamond Light Source, Ltd., Didcot OX11 0DE, U.K.
| | - Andrea Martinelli
- Department
of Chemistry, University of Rome Sapienza, Rome 00185, Italy
| | - Fabio Sciubba
- Department
of Chemistry, University of Rome Sapienza, Rome 00185, Italy
- NMR-Based
Metabolomics Laboratory (NMLab), Sapienza
University of Rome, Rome 00185, Italy
| | - Olga Russina
- Laboratorio
Liquidi Ionici, Istituto Struttura della
Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome 00133, Italy
- Department
of Chemistry, University of Rome Sapienza, Rome 00185, Italy
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19
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Carrera GVSM, Inês J, Bernardes CES, Klimenko K, Shimizu K, Canongia Lopes JN. The Solubility of Gases in Ionic Liquids: A Chemoinformatic Predictive and Interpretable Approach. Chemphyschem 2021; 22:2190-2200. [PMID: 34464013 DOI: 10.1002/cphc.202100632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Indexed: 11/07/2022]
Abstract
This work comprises the study of solubilities of gases in ionic liquids (ILs) using a chemoinformatic approach. It is based on the codification, of the atomic inter-component interactions, cation/gas and anion/gas, which are used to obtain a pattern of activation in a Kohonen Neural Network (MOLMAP descriptors). A robust predictive model has been obtained with the Random Forest algorithm and used the maximum proximity as a confidence measure of a given chemical system compared to the training set. The encoding method has been validated with molecular dynamics. This encoding approach is a valuable estimator of attractive/repulsive interactions of a generical chemical system IL+gas. This method has been used as a fast/visual form of identification of the reasons behind the differences observed between the solubility of CO2 and O2 in 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM PF6 ) at identical temperature and pressure (TP) conditions, The effect of variable cation and anion effect has been evaluated.
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Affiliation(s)
- Gonçalo V S M Carrera
- Chemistry Department LAQV-REQUIMTE, NOVA School of Science and Technology, 2829-516, Caparica, Portugal
| | - João Inês
- Chemistry Department LAQV-REQUIMTE, NOVA School of Science and Technology, 2829-516, Caparica, Portugal
| | - Carlos E S Bernardes
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal
| | - Kyrylo Klimenko
- Chemistry Department LAQV-REQUIMTE, NOVA School of Science and Technology, 2829-516, Caparica, Portugal
| | - Karina Shimizu
- Centro de Química Estrutural, Department of Chemical and Biological Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - José N Canongia Lopes
- Centro de Química Estrutural, Department of Chemical and Biological Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
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20
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Bernardes CES, Klimenko K, Canongia Lopes JN. Water Solubility Trends in Ionic Liquids: The Quantitative Structure-Property Relationship Model versus Molecular Dynamics. J Phys Chem B 2021; 125:11491-11497. [PMID: 34636241 DOI: 10.1021/acs.jpcb.1c06133] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The knowledge of water solubility in ionic liquids (ILs) is an important property with an impact on the design of many physical and chemical processes, like the purification of organic compounds or the establishment of decontamination procedures. The development of methods to predict or establish solubility trends in ILs is, therefore, extremely relevant, as it may avoid expensive and time-consuming experimental procedures. In this work, we compare results of water solubility in ILs predicted by a quantitative structure-property relationship (QSPR) model with trends found using aggregation studies in molecular dynamics (MD) simulation results. This study was performed for ILs combining the cations 1-butyl-1-methylpyrrolidinium and 1-butyl-1-methylmorpholinium, with the anions bis(pentafluoroethylsulfonyl)imide (BETI-), trifluoromethanesulfonate (TF-), and tetrafluoroborate (BF4-). Both methods indicated that, at 298.15 K, the water solubility in ILs was almost independent of the investigated cations. However, if the IL is composed of a hydrophobic anion, a slight increase in the mixability of the IL with water may be observed if the cation can form H-bonds. The QSPR model indicated that the hydrophobic BETI- anion leads to solubilities (xH2O ∼ 0.33), approximately half of those predicted when the cations are combined with TF- and BF4- anions (xH2O ∼ 0.60). The MD results suggested that this difference is essentially related to the ability of the water molecules to interact with the anion. This interaction involves the formation of networks of molecules, where H2O is completely solvated by anions. These structures make the formation of interactions between water molecules difficult, which are responsible for their segregation from solution and, therefore, to liquid-liquid phase separation. For the investigated ILs, the MD data also suggest that the solubility trends are inversely proportional to the number of "isolated" anions relative to ···AN-H2O-AN-H2O··· networks.
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Affiliation(s)
- Carlos E S Bernardes
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Lisboa 1749-016, Portugal
| | - Kyrylo Klimenko
- School of Science and Technology, NOVA University of Lisbon, Caparica 2829-516, Portugal
| | - José N Canongia Lopes
- Centro de Química Estrutural, Department of Chemical and Biological Engineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
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21
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Ishii K, Sakka T, Nishi N. Potential dependence of the ionic structure at the ionic liquid/water interface studied using MD simulation. Phys Chem Chem Phys 2021; 23:22367-22374. [PMID: 34608475 DOI: 10.1039/d1cp02484a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure at the electrochemical liquid/liquid interface between water (W) and trioctylmethylammonium bis(nonafluorobutanesulfonyl)amide, a hydrophobic ionic liquid (IL), was studied using molecular dynamics (MD) simulation in which the interfacial potential difference was controlled. On the IL side of the IL/W interface, ionic multilayers were found in the number density distribution of IL ions whereas monolayer-thick charge accumulation was found in the charge density distribution. This suggests that the potential screening is completed within the first ionic layer and the effect of overlayers on the potential is marginal. The W side of the interface showed the diffuse electric double layer as expected, and unexpectedly unveiled a density depletion layer, indicating that the IL surface is hydrophobic enough to be repelled by water. The IL ions in the first ionic layer showed anisotropic orientation even at the potential of zero charge, in which the polar moieties were oriented to the W side and the non-polar moieties preferred parallel orientation to the interface. When an electric field is applied across the interface so that the IL ions are more accumulated, the non-polar moieties changed the parallel preference to more oriented to the IL side due to the dipolar nature of the IL ions. The ionic orientations at the IL/W interface were compared with those at other two IL interfaces, the vacuum and graphene interfaces of the IL. The parallel preference of the non-polar moieties was similar at the IL/graphene interface but different from the perpendicular orientation toward the vacuum side at the IL/vacuum interface. The comparison suggests that water behaves like a wall that repels IL ions like a solid electrode.
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Affiliation(s)
- Kosuke Ishii
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
| | - Tetsuo Sakka
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
| | - Naoya Nishi
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
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22
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Rauber D, Philippi F, Kuttich B, Becker J, Kraus T, Hunt P, Welton T, Hempelmann R, Kay CWM. Curled cation structures accelerate the dynamics of ionic liquids. Phys Chem Chem Phys 2021; 23:21042-21064. [PMID: 34522943 DOI: 10.1039/d1cp02889h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquids are modern liquid materials with potential and actual implementation in many advanced technologies. They combine many favourable and modifiable properties but have a major inherent drawback compared to molecular liquids - slower dynamics. In previous studies we found that the dynamics of ionic liquids are significantly accelerated by the introduction of multiple ether side chains into the cations. However, the origin of the improved transport properties, whether as a result of the altered cation conformation or due to the absence of nanostructuring within the liquid as a result of the higher polarity of the ether chains, remained to be clarified. Therefore, we prepared two novel sets of methylammonium based ionic liquids; one set with three ether substituents and another set with three butyl side chains, in order to compare their dynamic properties and liquid structures. Using a range of anions, we show that the dynamics of the ether-substituted cations are systematically and distinctly accelerated. Liquefaction temperatures are lowered and fragilities increased, while at the same time cation-anion distances are slightly larger for the alkylated samples. Furthermore, pronounced liquid nanostructures were not observed. Molecular dynamics simulations demonstrate that the origin of the altered properties of the ether substituted ionic liquids is primarily due to a curled ether chain conformation, in contrast to the alkylated cations where the alkyl chains retain a linear conformation. Thus, the observed structure-property relations can be explained by changes in the geometric shape of the cations, rather than by the absence of a liquid nanostructure. Application of quantum chemical calculations to a simplified model system revealed that intramolecular hydrogen-bonding is responsible for approximately half of the stabilisation of the curled ether-cations, whereas the other half stems from non-specific long-range interactions. These findings give more detailed insights into the structure-property relations of ionic liquids and will guide the development of ionic liquids that do not suffer from slow dynamics.
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Affiliation(s)
- Daniel Rauber
- Department of Chemistry, Saarland University, Campus B2.2, 66123, Saarbrücken, Germany.
| | - Frederik Philippi
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Björn Kuttich
- INM-Leibniz Institute for New Materials, Campus D2.2, 66123, Saarbrücken, Germany
| | - Julian Becker
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Tobias Kraus
- Department of Chemistry, Saarland University, Campus B2.2, 66123, Saarbrücken, Germany. .,INM-Leibniz Institute for New Materials, Campus D2.2, 66123, Saarbrücken, Germany
| | - Patricia Hunt
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK.,School of Chemical and Physical Sciences, Victoria University of Wellington, New Zealand
| | - Tom Welton
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, London W12 0BZ, UK
| | - Rolf Hempelmann
- Department of Chemistry, Saarland University, Campus B2.2, 66123, Saarbrücken, Germany.
| | - Christopher W M Kay
- Department of Chemistry, Saarland University, Campus B2.2, 66123, Saarbrücken, Germany. .,London Centre for Nanotechnology, University College London, 17-19 Gordon Street, London WC1H 0AH, UK.
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23
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Holoubek J, Liu H, Wu Z, Yin Y, Xing X, Cai G, Yu S, Zhou H, Pascal TA, Chen Z, Liu P. Tailoring Electrolyte Solvation for Li Metal Batteries Cycled at Ultra-Low Temperature. NATURE ENERGY 2021; 2021:10.1038/s41560-021-00783-z. [PMID: 33717504 PMCID: PMC7954221 DOI: 10.1038/s41560-021-00783-z] [Citation(s) in RCA: 184] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 01/21/2021] [Indexed: 05/19/2023]
Abstract
Lithium metal batteries (LMBs) hold the promise to pushing cell level energy densities beyond 300 Wh kg-1 while operating at ultra-low temperatures (< -30°C). Batteries capable of both charging and discharging at these temperature extremes are highly desirable due to their inherent reduction of external warming requirements. Here we demonstrate that the local solvation structure of the electrolyte defines the charge-transfer behavior at ultra-low temperature, which is crucial for achieving high Li metal coulombic efficiency (CE) and avoiding dendritic growth. These insights were applied to Li metal full cells, where a high-loading 3.5 mAh cm-2 sulfurized polyacrylonitrile (SPAN) cathode was paired with a one-fold excess Li metal anode. The cell retained 84 % and 76 % of its room temperature capacity when cycled at -40 and -60 °C, respectively, which presented stable performance over 50 cycles. This work provides design criteria for ultra-low temperature LMB electrolytes, and represents a defining step for the performance of low-temperature batteries.
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Affiliation(s)
- John Holoubek
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Haodong Liu
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Zhaohui Wu
- Program of Chemical Engineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Yijie Yin
- Program of Materials Science, University of California, San Diego, La Jolla, CA 92093, USA
| | - Xing Xing
- Program of Materials Science, University of California, San Diego, La Jolla, CA 92093, USA
| | - Guorui Cai
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Sicen Yu
- Program of Materials Science, University of California, San Diego, La Jolla, CA 92093, USA
| | - Hongyao Zhou
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Tod A Pascal
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Program of Materials Science, University of California, San Diego, La Jolla, CA 92093, USA
- Program of Chemical Engineering, University of California, San Diego, La Jolla, CA 92093, USA
- Sustainable Power and Energy Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Zheng Chen
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Program of Materials Science, University of California, San Diego, La Jolla, CA 92093, USA
- Program of Chemical Engineering, University of California, San Diego, La Jolla, CA 92093, USA
- Sustainable Power and Energy Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Ping Liu
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Program of Materials Science, University of California, San Diego, La Jolla, CA 92093, USA
- Program of Chemical Engineering, University of California, San Diego, La Jolla, CA 92093, USA
- Sustainable Power and Energy Center, University of California, San Diego, La Jolla, CA 92093, USA
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24
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Červinka C, Štejfa V. Computational assessment of the crystallization tendency of 1-ethyl-3-methylimidazolium ionic liquids. Phys Chem Chem Phys 2021; 23:4951-4962. [PMID: 33621293 DOI: 10.1039/d0cp06083f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A test set of 20 1-ethyl-3-methylimidazolium ionic liquids, differing in their anions, is subjected to a computational study with an aim to interpret the experimental difficulties related to the preparation of crystalline phases of the selected species. Molecular dynamics simulations of the liquid phases, quantum-chemical symmetry-adapted perturbation theory calculations of the interaction energies within the ion pair, and density functional theory calculations of the cohesive energies of the crystal phases are used in this work to obtain the structural, energetic, and diffusion parameters of the materials. Correlations of fusion temperatures and enthalpies and temperatures of the glass transitions with 15 calculated parameters are investigated in order to interpret the trends of the phase behavior of the selected ionic liquids. Correlations of a fair significance are found between the glass transition temperatures and selected energetic, cohesive, and diffusion-related characteristics of the liquids; however, the correlations of calculated transport and some enthalpic properties are blurred by the limited accuracy of the non-polarizable CL&P force field for predicting these properties. 1-Ethyl-3-methylimidazolium acetate is found to have an exclusive position among those in the test set due to several outlying characteristics, such as the short contact distance of its counterions in the liquid, high pair interaction energies, and importance of the dispersion interactions for the collective cohesion, impeding its crystallization significantly.
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Affiliation(s)
- Ctirad Červinka
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, CZ-166 28 Prague 6, Praha, Czech Republic.
| | - Vojtěch Štejfa
- Department of Physical Chemistry, University of Chemistry and Technology Prague, Technická 5, CZ-166 28 Prague 6, Praha, Czech Republic.
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25
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Pardo F, Zarca G, Urtiaga A. Effect of feed pressure and long-term separation performance of Pebax-ionic liquid membranes for the recovery of difluoromethane (R32) from refrigerant mixture R410A. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118744] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Koyama Y, Shimono S, Abe H, Matsuishi K. Crystal polymorphs in 1-alkyl-3-methylimidazolium perfluorobutanesulfonate ionic liquids. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113908] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Hakim L, Ishii Y, Matsumoto K, Hagiwara R, Ohara K, Umebayashi Y, Matubayasi N. Transport Properties of Ionic Liquid and Sodium Salt Mixtures for Sodium-Ion Battery Electrolytes from Molecular Dynamics Simulation with a Self-Consistent Atomic Charge Determination. J Phys Chem B 2020; 124:7291-7305. [DOI: 10.1021/acs.jpcb.0c04078] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Lukman Hakim
- Elements Strategy Initiatives for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
- Department of Chemistry, Faculty of Mathematics and Natural Science, Brawijaya University, Malang 65145, Indonesia
| | - Yoshiki Ishii
- Elements Strategy Initiatives for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
- Graduate School of Simulation Studies, University of Hyogo, Kobe, Hyogo 650-0047, Japan
| | - Kazuhiko Matsumoto
- Elements Strategy Initiatives for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
- Graduate School of Energy Science, Kyoto University, Yoshida, Kyoto 606-8501, Japan
| | - Rika Hagiwara
- Elements Strategy Initiatives for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
- Graduate School of Energy Science, Kyoto University, Yoshida, Kyoto 606-8501, Japan
| | - Koji Ohara
- Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Yasuhiro Umebayashi
- Graduate School of Science and Technology, Niigata University, Niigata-shi, Niigata 950-2181, Japan
| | - Nobuyuki Matubayasi
- Elements Strategy Initiatives for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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28
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Tong J, Wu S, von Solms N, Liang X, Huo F, Zhou Q, He H, Zhang S. The Effect of Concentration of Lithium Salt on the Structural and Transport Properties of Ionic Liquid-Based Electrolytes. Front Chem 2020; 7:945. [PMID: 32117860 PMCID: PMC7010713 DOI: 10.3389/fchem.2019.00945] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/31/2019] [Indexed: 11/18/2022] Open
Abstract
Ionic liquids (ILs) are used as electrolytes in high-performance lithium-ion batteries, which can effectively improve battery safety and energy storage capacity. All atom molecular dynamics simulation and experiment were combined to investigate the effect of the concentration of lithium salt on the performance of electrolytes of four IL solvents ([Cnmim][TFSI] and [Cnmim][FSI], n = 2, 4). The IL electrolytes exhibit higher density and viscosity; meanwhile, larger lithium ion transfer numbers as the concentration of LiTFSI increases. Furthermore, in order to explore the effect of the concentration of lithium salt on the ionic associations of Li+ and anion of IL, the microstructures of the lithium salt in various IL electrolytes at different concentrations were investigated. The structural analysis indicated that strong bidentate and monodentate coordination was found between Li+ and anion of all IL electrolytes. Both cis and trans isomerism of [FSI]− were observed in [FSI]−-type IL electrolyte systems. Furthermore, the existence of the ion cluster [Li[anion]x](x−1)− in IL electrolytes and the cluster became more closed and compact as the concentration of LiTFSI increases.
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Affiliation(s)
- Jiahuan Tong
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.,Department of Chemical & Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Shengli Wu
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Nicolas von Solms
- Department of Chemical & Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Xiaodong Liang
- Department of Chemical & Biochemical Engineering, Technical University of Denmark, Lyngby, Denmark
| | - Feng Huo
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Qing Zhou
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.,College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.,College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China
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29
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Bernardino K, Goloviznina K, Gomes MC, Pádua AAH, Ribeiro MCC. Ion pair free energy surface as a probe of ionic liquid structure. J Chem Phys 2020; 152:014103. [DOI: 10.1063/1.5128693] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Kalil Bernardino
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Kateryna Goloviznina
- Laboratoire de Chimie, ENS de Lyon, Université de Lyon, CNRS, 69364 Lyon, France
| | | | - Agílio A. H. Pádua
- Laboratoire de Chimie, ENS de Lyon, Université de Lyon, CNRS, 69364 Lyon, France
| | - Mauro C. C. Ribeiro
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
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30
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Gouveia ASL, Bernardes CES, Shaplov AS, Lozinskaya EI, Canongia Lopes JN, Marrucho IM. Tuning the miscibility of water in imide-based ionic liquids. Phys Chem Chem Phys 2020; 22:25236-25242. [DOI: 10.1039/d0cp05074a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental and theoretical study on mixtures of water with ionic liquids exhibiting unusual temperature concentration phase diagrams.
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Affiliation(s)
- Andreia S. L. Gouveia
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Carlos E. S. Bernardes
- Centro de Química Estrutural
- Departamento de Química e Bioquímica
- Faculdade de Ciências da Universidade de Lisboa
- 1749-016 Lisboa
- Portugal
| | | | - Elena I. Lozinskaya
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences (INEOS RAS)
- Moscow
- Russia
| | - José N. Canongia Lopes
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
| | - Isabel M. Marrucho
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- 1049-001 Lisboa
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31
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Faria B, Bernardes CES, Silvestre N, Canongia Lopes JN. C13 – a new empirical force field to characterize the mechanical behavior of carbyne chains. Phys Chem Chem Phys 2020; 22:758-771. [DOI: 10.1039/c9cp03867a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The C13 empirical potential is developed for accurate modeling of mechanical properties of carbyne specifically taking in account bond alternation.
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Affiliation(s)
- Bruno Faria
- Centro de Química Estrutural
- Department of Chemical and Biological Engineering
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Carlos E. S. Bernardes
- Centro de Química Estrutural
- Department of Chemical and Biological Engineering
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - Nuno Silvestre
- IDMEC
- Dept. of Mechanical Engineering
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
| | - José N. Canongia Lopes
- Centro de Química Estrutural
- Department of Chemical and Biological Engineering
- Instituto Superior Técnico
- Universidade de Lisboa
- Portugal
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32
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Goloviznina K, Canongia Lopes JN, Costa Gomes M, Pádua AAH. Transferable, Polarizable Force Field for Ionic Liquids. J Chem Theory Comput 2019; 15:5858-5871. [DOI: 10.1021/acs.jctc.9b00689] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kateryna Goloviznina
- Laboratoire de Chimie, École Normale Supérieure de Lyon & CNRS, 69364 Lyon, France
| | - José N. Canongia Lopes
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | | | - Agílio A. H. Pádua
- Laboratoire de Chimie, École Normale Supérieure de Lyon & CNRS, 69364 Lyon, France
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33
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Gouveia ASL, Bernardes CES, Lozinskaya EI, Shaplov AS, Canongia Lopes JN, Marrucho IM. Neat ionic liquids versus ionic liquid mixtures: a combination of experimental data and molecular simulation. Phys Chem Chem Phys 2019; 21:23305-23309. [DOI: 10.1039/c9cp03021b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Simple mixtures of ionic liquids (IL–IL mixtures) can become a promising approach for the substitution of task-specific ILs.
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Affiliation(s)
- Andreia S. L. Gouveia
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Avenida Rovisco Pais
| | - Carlos E. S. Bernardes
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Avenida Rovisco Pais
| | - Elena I. Lozinskaya
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences (INEOS RAS)
- Vavilov St. 28
- 119991 Moscow
- Russia
| | | | - José N. Canongia Lopes
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Avenida Rovisco Pais
| | - Isabel M. Marrucho
- Centro de Química Estrutural
- Departamento de Engenharia Química
- Instituto Superior Técnico
- Universidade de Lisboa
- Avenida Rovisco Pais
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34
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Talebi M, Patil RA, Sidisky LM, Berthod A, Armstrong DW. Variation of anionic moieties of dicationic ionic liquid GC stationary phases: Effect on stability and selectivity. Anal Chim Acta 2018; 1042:155-164. [DOI: 10.1016/j.aca.2018.07.047] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/19/2018] [Accepted: 07/22/2018] [Indexed: 01/08/2023]
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