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Fleck M, Darouich S, Hansen N, Gross J. Transferable Anisotropic Mie Potential Force Field for Alkanediols. J Phys Chem B 2024. [PMID: 38709669 DOI: 10.1021/acs.jpcb.4c00962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
The development of force fields for polyfunctional molecules, such as alkanediols, requires a careful account of different average intramolecular conformations for gas states compared to dense liquid states, where intra- and intermolecular hydrogen bonds compete. In the present work, the transferable anisotropic Mie (TAMie) potential is extended to 1,n-alkanediols. Using the convention that intramolecular nonbonded interactions up to and including the third neighbor are excluded, all force field parameters developed previously for 1-alcohols were transferred to 1,5-pentanediol and beyond, with good agreement with experimental phase equilibrium data. To obtain trans-gauche ratios of 1,2-ethanediol and 1,3-propanediol that are consistent with experimental results, the propensities for intra- and intermolecular hydrogen bonds had to be balanced. This was achieved by parameterizing the intramolecular dihedral energy functions governing the O-C-C-O and O-C-C-C angles while intramolecular charge-charge interactions were active. All partial charges belonging to a functional group are collected in a charge group and all interactions among two charge groups are evaluated even if they are separated by less than three bonds. With this approach, it is possible to apply the nonbonded parameters from 1-alcohols to alkanediols without further refinement. The agreement with experimental phase equilibrium and shear viscosity data is of similar quality as for the 1-alcohols and the trans-gauche ratio agrees with literature results from spectroscopic measurements and ab initio calculations.
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Affiliation(s)
- Maximilian Fleck
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
| | - Samir Darouich
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
| | - Niels Hansen
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
| | - Joachim Gross
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany
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Liang H, Zhou Y, Shi R, Jiang W, Liu K, Xu Q, Zhang M, Zhuang H, Li H, Bu Y. In Situ Raman Study of Voltage Tolerance Up to 2.2 V of Ionic Liquid Analogue Supercapacitor Electrolytes Immune to Water Adsorption Conferred by Amphoteric Imidazole Additives. J Phys Chem Lett 2023; 14:2347-2353. [PMID: 36847667 DOI: 10.1021/acs.jpclett.2c03928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Ionic liquid analogues (ILAs) are promising electrolytes for supercapacitors due to their low cost and considerable voltage (>2.0 V). However, the voltage is <1.1 V for water-adsorbed ILAs. Herein for the first time, an amphoteric imidazole (IMZ) additive is reported to address this concern by reconfiguring the solvent shell of ILAs. Addition of only 2 wt % IMZ increases the voltage from 1.1 to 2.2 V, with an increase in capacitance from 178 to 211 F g-1 and an increase in energy density from 6.8 to 32.6 Wh kg-1. In situ Raman reveals that the strong H-bonds formed by IMZ with completive ligands 1,3-propanediol and water induce a reversal of the polarity of the solvent shells, suppressing absorbed water electrochemical activity and thus increasing the voltage. This study solves the problem of low voltage for water-adsorbed ILAs and reduces the equipment cost of ILA-based supercapacitor assembly (e.g., assembly in air without a glovebox).
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Affiliation(s)
- Hongyu Liang
- Institute of Advanced Manufacturing and Modern Equipment Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yan Zhou
- Institute of Advanced Manufacturing and Modern Equipment Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Renxing Shi
- Institute of Advanced Manufacturing and Modern Equipment Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wenya Jiang
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Kuanguan Liu
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering and Ningxia Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan, Ningxia 750021, China
| | - Qian Xu
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Ming Zhang
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Hao Zhuang
- CECEP Solar Energy Technology (Zhenjiang) Company, Ltd., No. 9, Beishan Road, New Area, Zhenjiang, Jiangsu 212132, China
| | - Huaming Li
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Yongfeng Bu
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
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Kuzmin V, Novikov V, Sagitova E, Ustynyuk L, Prokhorov K, Ivchenko P, Nikolaeva G. Correlations among the Raman spectra and the conformational compositions of ethylene glycol, 1,2- and 1,3-propylene glycols. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Shukla N, Yu M, Pradhan A, Han Y, Gellman AJ. Chirality Retention in Aqueous Propylene Oxide Hydration: Chirality of the Transition State. Isr J Chem 2021. [DOI: 10.1002/ijch.202100098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- N. Shukla
- Institute of Complex Engineered Systems
- Department of Chemical Engineering
| | - M. Yu
- Department of Chemical Engineering
| | | | - Y. Han
- Department of Chemical Engineering
| | - A. J. Gellman
- Department of Chemical Engineering
- W.E. Scott Institute for Energy Innovation Carnegie Mellon University Pittsburgh PA 15213 USA
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