Effects of Volume-% of Voids in a Solvent and Repulsive Solute–Solvent Interactions, on Limiting Partial Molar Volumes (V ∞) in Solvent (1)–Solute (2) Systems

Inamura, Isamu; Jinbo, Yuji; Saiko, Tatsuo

doi:10.1007/s10953-015-0374-5

Cited by 6 publications

(13 citation statements)

References 15 publications

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“…Furthermore, the peak amplitude of Li−O(TFSI) pair distribution function for GBL‐based electrolyte was less pronounced than that for DMF‐based electrolyte, corroborating the higher simulated conductivity of GBL systems. The lower peak amplitude for GBL system was attributed to the smaller van der Waals volume of GBL molecule . Nanoporous carbons contain a large proportion of nanometer‐scale pores, leading to the strong size‐dependent effect on the accessibility of organic solvent molecule inside the nanoporous structure .…”

Section: Resultsmentioning

confidence: 99%

Ion Dynamics of Water‐in‐Salt Electrolyte with Organic Solvents in Nanoporous Supercapacitor Electrodes

Yang

et al. 2020

ChemElectroChem

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Water-in-salt electrolytes blended with organics solvents, that is, organic solvent/water mixed electrolytes, are promising for applications in next-generation energy storage devices vitally needed for industrial electrification and decarbonization. However, the electrolyte ion diffusion behaviors within nanoporous supercapacitor electrodes are poorly understood. Here a systematic investigation into supercapacitor resistances and ion kinetics is carried out experimentally and with numerical simulations. The electrochemical results on the nanoporous electrodes reveal a nonmonotonic (decreasing, increasing, and then decreasing) trend of supercapacitor resistances with increasing solvent mobility, challenging the long-held views that supercapacitor resistances decrease with elevated mobility of organic solvent. The abnormal trend is examined by numerical molecular dynamics simulations of electrolyte ion diffusion within 0.95 nm nanochannels. The electrolyte conductivity is related to cation-anion interactions within nanochannels. We further confirm the crucial interplay of the van der Waals sizes of solvent molecules and channel width in determining electrolyte conductivity in nanoporous electrodes.

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Section: Resultsmentioning

confidence: 99%

Ion Dynamics of Water‐in‐Salt Electrolyte with Organic Solvents in Nanoporous Supercapacitor Electrodes

Yang

et al. 2020

ChemElectroChem

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“…Detailed methods for measuring ρ and calculating V ∞ 23 are presented in previous research [1]. For example, the extrapolation procedure and the graph (ρ vs. C plot) for calculating V ∞ 2 in the acetic acid (1) − pyridine (2) system are given in Fig.…”

Section: Calculation Ofmentioning

confidence: 99%

“…2 ) in solvent (1) − solute (2) systems at infinite dilution [1]. In the present paper, we experimentally studied the behavior of V ∞ 23 in solvent (1) − [solute (2) + solute (3)] systems at an infinite dilution.…”

Section: Introductionmentioning

confidence: 99%

“…where V is the volume of the system, n 1 and n 2 denote the numbers of moles of solvent (1) and solute (2), respectively, and T and P denote the temperature (K) and pressure (Pa), respectively. In Eq.…”

Section: Introductionmentioning

confidence: 99%

“…where V is the volume of the system, n 1 and n 23 are the mole number of solvent (1) and the mixed solutes (2 and 3), respectively. V ∞ 23 corresponds to the volume increment of the system when 1 mol of the mixed solutes (2 and 3) is dissolved in a large amount of solvent (1) under constant temperature and pressure. In Eq.…”

Section: Introductionmentioning

confidence: 99%

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Limiting Partial Molar Volumes (V∞23) in Solvent (1) − [Solute (2) + Solute (3)] Systems and the Effects of Ionic Hydration on V∞23

et al. 2019

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Ionic hydration and electrostriction are very important phenomena in various fields such as medical science, biochemistry, and chemical engineering. The present study is the first to focus on these parameters at infinite dilution. Limiting partial molar volumes (V ∞ 23 ) in a solvent (1) − [solute (2) + solute (3)] system were measured at several solute compositions x 3 [= n 3 /(n 2 + n 3 )] at 30.00 ± 0.05 °C. When the mixed solutes (2 and 3) only slightly ionized, V ∞ 23 were observed on the additivity line. This result was attributed to the fact that only solvent (1) molecules can exist around an isolated solute (2) molecule or an isolated solute (3) molecule at infinite dilution. However, V ∞ 23 in water − [pyridine + fatty acid (acetic acid, propionic acid, or butyric acid)] systems negatively deviate from the additivity line. By measuring electrical conductivity (κ) and mixing enthalpy (ΔH mix ), the negative deviations of V ∞ 23 from the additivity line were attributed to the ionic hydration of pyridine and the fatty acid. As a result, by measuring V ∞ 23 at several solute compositions, the electrostriction in water − [pyridine + fatty acid] systems was observed. Conversely, V 3 ∞ in all 14 [solvent (1) + solvent (2)] − solute (3) systems deviated in complicated ways from the additivity line. Unfortunately, we could not clarify the reason behind this deviation because numerous factors had to be considered. Thus, it was confirmed that the behavior of V ∞ 3 is much more complicated than that of V ∞ 23 . The solvents used to study V ∞ 23 and V ∞ 3 are as follows: water, pyridine, acetic acid, propionic acid, butyric acid, benzene, acetone, chloroform, methanol, ethanol, DMF, carbon tetrachloride, isobutylamine, isobutyl alcohol, n-heptane, and n-octane.

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Structural changes of water caused by non-electrolytes: Volumetric and compressibility approach for urea-like analogues

Wawer

Krakowiak

2018

Journal of Molecular Liquids

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Effects of Volume-% of Voids in a Solvent and Repulsive Solute–Solvent Interactions, on Limiting Partial Molar Volumes (V ∞) in Solvent (1)–Solute (2) Systems

Cited by 6 publications

References 15 publications

Ion Dynamics of Water‐in‐Salt Electrolyte with Organic Solvents in Nanoporous Supercapacitor Electrodes

Ion Dynamics of Water‐in‐Salt Electrolyte with Organic Solvents in Nanoporous Supercapacitor Electrodes

Limiting Partial Molar Volumes (V∞23) in Solvent (1) − [Solute (2) + Solute (3)] Systems and the Effects of Ionic Hydration on V∞23

Structural changes of water caused by non-electrolytes: Volumetric and compressibility approach for urea-like analogues

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