New State-Diagram of Aqueous Solutions Unveiling Ionic Hydration, Antiplasticization, and Structural Heterogeneities in LiTFSI-H2O.
New State-Diagram of Aqueous Solutions Unveiling Ionic Hydration, Antiplasticization, and Structural Heterogeneities in LiTFSI-H2O.
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水溶液的新状态图揭示了 LiTFSI-H2O 中的离子水合、抗塑化和结构异质性。
DOI:
10.1021/acs.jpcb.1c08431
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发表时间:
2021-11
影响因子:
3.3
通讯作者:
Wang Qiang
中科院分区:
文献类型:
--
作者:
Zhang Jinbing;Wang Fengping;Cao Zexian;Wang Qiang
Here, we report a new state-diagram for aqueous solutions based on concentration-dependent glass-transition temperatures of concentrated and ice freeze-concentrated solutions. Different from the equilibrium phase diagram, this new state-diagram can provide comprehensive information about the hydration numbers of solutes, nonequilibrium vitrification/cold-crystallization, and vitrification/devitrification processes of aqueous solutions in three distinct concentration zones separated by two critical water-content points of only functions of the hydration number. Based on this new state-diagram, we observe the comparable hydration ability of LiTFSI to LiCl and an atypical concentration-dependent cold-crystallization behavior of the LiTFSI-H2O system. These results unveil the negligible hydration ability of TFSI- in a water-rich solution, characterize the antiplasticizing effect of water induced by the strengthened Li+-TFSI--H2O interaction when only hydration water and confined water are present, and confirm the increasing fraction of water-rich domains with the decrease in water content when the cation and anion become incompletely hydrated on average. These results highlight the novel water-content-mediated interactions among the anion, cation, and H2O for LiTFSI-H2O.
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影响因子:
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影响因子:
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作者:
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作者:
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DOI:
10.26434/chemrxiv.9887018.v1
发表时间:
2019-09
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Zhujie Li;Roza Bouchal;T. Méndez‐Morales;A. Rollet;Cécile Rizzi;S. le Vot;F. Favier;B. Rotenberg-B.-Rotenb
通讯作者:
Zhujie Li;Roza Bouchal;T. Méndez‐Morales;A. Rollet;Cécile Rizzi;S. le Vot;F. Favier;B. Rotenberg-B.-Rotenb