Feasibility of TEMPO-functionalized imidazolium, ammonium and pyridinium salts as redox-active carriers in ethaline deep eutectic solvent for energy storage,Molecular Systems Design & Engineering

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Feasibility of TEMPO-functionalized imidazolium, ammonium and pyridinium salts as redox-active carriers in ethaline deep eutectic solvent for energy storage
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2020-06-23 , DOI: 10.1039/d0me00038h
Brian Chen _{1,

2,

3,

4} , Sarah Mitchell _{4,

5,

6,

7,

8} , Nicholas Sinclair _{1,

2,

3,

4} , Jesse Wainright _{1,

2,

3,

4} , Emily Pentzer _{4,

5,

6,

7,

8} , Burcu Gurkan _{1,

2,

3,

4}

Affiliation

The discovery of electrolytes that have low vapor pressures and high solubility towards redox active species with an ability to undergo multiple electron transfer reactions is a challenge to realize in large-scale energy storage. Herein, we investigate the feasibility of (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) derived halide salts as redox active species in ethaline (1 : 2 ethylene glycol : choline chloride), a deep eutectic solvent (DES). Hydrogen bonding and electrostatic interactions achieved by the functionalization of TEMPO are shown to improve solubility in ethaline. This is the first study evaluating the physical properties and electrochemical behavior of the newly synthesized TEMPO-salts in ethaline providing insight into the impact of chemical functionality on the utility of these redox active species in DESs.

中文翻译：

TEMPO功能化的咪唑鎓盐，铵盐和吡啶鎓盐作为乙醛深共晶溶剂中的氧化还原活性载体进行储能的可行性

发现具有低蒸气压和对氧化还原活性物质具有高溶解度并且能够进行多次电子转移反应的电解质是在大规模能量存储中实现的挑战。在此，我们研究了在深共熔溶剂乙胺（1：2乙二醇：氯化胆碱）中作为（2,2,6,6-四甲基哌啶-1-基）氧基（TEMPO）的卤化物盐作为氧化还原活性物质的可行性。（DES）。通过TEMPO的官能化实现的氢键作用和静电相互作用显示出可提高在乙胺中的溶解度。这是第一项评估新合成的TEMPO盐在乙胺中的物理性质和电化学行为的研究，提供了对化学功能对这些氧化还原活性物质在DES中的效用的影响的见识。

更新日期：2020-07-13

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