Effects of water on the structure and transport properties of room temperature ionic liquids and concentrated electrolyte solutions
Effects of water on the structure and transport properties of room temperature ionic liquids and concentrated electrolyte solutions
复制标题
水对室温离子液体和浓电解质溶液结构和传输性能的影响
DOI：
10.1088/1674-1056/ab9c07
复制
发表时间：
2020
影响因子：
1.7
通讯作者：
Cao Zexian
中科院分区：
文献类型：
--
作者：
Zhang Jinbing;Wang Qiang;Cao Zexian
由于室温离子液体特别是超浓电解质水溶液在离子电池中的潜在应用，其输运性质和相关的结构异质性受到越来越多的关注。本文综述了2010年以来有关纯RTIL中的液-液分离、极性和非极性区域的聚集以及超浓电解质溶液中主要由阴离子构成的溶剂团簇和三维网络的研究结果。同时，强调了金属离子在电极/电解液界面的去溶剂化过程对金属离子迁移的主导作用。本文还介绍了目前的理解，水如何影响阴-阳离子相互作用，结构的不均匀性，金属离子的初级配位鞘的结构，从而在自由贫水电解质中的传输性能。
Transport properties and the associated structural heterogeneity of room temperature aqueous ionic liquids and especially of super-concentrated electrolyte aqueous solutions have received increasing attention, due to their potential application in ionic battery. This paper briefly reviews the results reported mainly since 2010 about the liquid–liquid separation, aggregation of polar and apolar domains in neat RTILs, and solvent clusters and 3D networks chiefly constructed by anions in super-concentrated electrolyte solutions. At the same time, the dominating effect of desolvation process of metal ions at electrode/electrolyte interface upon the transport of metal ions is stressed. This paper also presents the current understanding of how water affects the anion–cation interaction, structural heterogeneities, the structure of primary coordination sheath of metal ions and consequently their transport properties in free water-poor electrolytes.