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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Structure and Dynamics of [PF6][P_(1,2,2,4)] from Molecular Dynamics Simulations
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Structure and Dynamics of [PF6][P_(1,2,2,4)] from Molecular Dynamics Simulations

机译:分子动力学模拟[PF6] [P_(1,2,2,4)]的结构和动力学

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摘要

Dieth7l(methyl)(isobutyl)phosphonium hexafluorophosphate, [PF6]-[P_(1,2,2,4] is an organic ionic plastic crystal with potential uses as a solid electrolyte in storage and light harvesting devices. In this work, we present a molecular dynamics simulation study for this material covering an extended temperature range, from 175 to 500 K. The simulations predict a transition from the crystalline to a semi plastic phase at 197 K, the onset of cation jump-like rotations at 280 K, a third transition at 340 K to a full plastic phase, and melting to 450 K. Overall, the simulations show a good agreement with the experimental findings, providing a wealth of detail in the structural and dynamic properties of the system.
机译:Dieth7l(甲基)(异丁基)六氟磷酸,[PF6]-[P_(1,2,2,4]是一种有机离子塑料晶体,有可能在存储和光收集装置中用作固体电解质。目前对该材料进行了分子动力学模拟研究,该研究涵盖了从175到500 K的扩展温度范围。该模拟预测了197 K时从晶相到半塑性相的转变,280 K时出现了阳离子跳跃状旋转,第三次转变是在340 K到完全塑性阶段,然后熔化到450K。总的来说,模拟结果与实验结果非常吻合,为系统的结构和动力学特性提供了很多细节。

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