Thermodynamics of tetramethylurea solutions in ethylene glycol: The evidence of pairwise solvophobic interaction

Ivanov, E. V.; Кустов, А. В.; Батов, Д. В.; Smirnova, N. L.; Pechnikova, Nadezhda L.

doi:10.1016/j.molliq.2020.113994

Journal of Molecular Liquids

2020

DOI: 10.1016/j.molliq.2020.113994

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Thermodynamics of tetramethylurea solutions in ethylene glycol: The evidence of pairwise solvophobic interaction

E. V. Ivanov

А. В. Кустов

Д. В. Батов

et al.

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Cited by 5 publications

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Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra‐Stable Zinc Electrode

Tian,

Yao,

Guo

et al. 2024

Advanced Energy Materials

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Quasi‐solid‐state zinc‐ion batteries (QZIBs) have attracted wide attention due to their excellent dimensional stability and high safety. However, poor ion conduction capabilities, severe dendrite growth, and rampant side reactions still hinder their commercialization. The regulation of the solvation structure of Zn2+ is considered to be an effective method to address these issues. Herein, a hydrogel electrolyte with a regulated solvation structure (HE‐RS) is designed via the combination of tetramethyl urea (TMU) additive and polyvinyl alcohol (PVA) matrix. The hydrophilic ─C═O group of TMU exhibits strong affinity with the PVA chains, improving the mechanical strength of the PVA matrix. The ─N(CH3)2 groups at both ends of TMU exhibit strong hydrophobic characteristics, which leads to local hydrophobicity and decreased water activity. Additionally, abundant oxygen‐containing (electronegative) groups on both PVA and TUM can adsorb Zn2+ and provide sites for Zn2+ transference. Benefiting from these merits, Zn2+ solvation structure and deposition behavior are regulated. Consequently, the Zn||Zn symmetric cell with HE‐RS exhibits a stable cycling life exceeding 2000 h. Moreover, the HE‐RS‐based Zn||NH4V4O10 cell exhibits a capacity retention of 96.4% after 1000 cycles at 2 A g−1.

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Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra‐Stable Zinc Electrode

Tian,

Yao,

Guo

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

Enthalpy and heat capacity of hydration of the cytostatic Dioxadet

Smirnova,

Kustov,

Notfullin

et al. 2024

Mendeleev Communications

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Thermodynamics of TMU-TMU interaction in water, ethylene glycol and formamide – From pair solvophobic interaction to cluster formation

Кустов

Smirnova

2022

Journal of Molecular Liquids

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Thermodynamics of tetramethylurea solutions in ethylene glycol: The evidence of pairwise solvophobic interaction

Cited by 5 publications

References 53 publications

Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra‐Stable Zinc Electrode

Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra‐Stable Zinc Electrode

Enthalpy and heat capacity of hydration of the cytostatic Dioxadet

Thermodynamics of TMU-TMU interaction in water, ethylene glycol and formamide – From pair solvophobic interaction to cluster formation

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