Evaluating and Developing a Reliable Reference Electrode for Choline Chloride Based Deep Eutectic Solvents

被引：19

作者：

Shen, X. ^{[1
]}

Sinclair, N. ^{[1
]}

Wainright, J. ^{[1
]}

Akolkar, R. ^{[1
]}

Savinell, R. F. ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Chem & Biomol Engn, Cleveland, OH 44106 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2020年 / 167卷 / 08期

关键词：

REDOX FLOW BATTERY; IONIC LIQUIDS; FERROCENE; KINETICS; STATE;

D O I：

10.1149/1945-7111/ab913c

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The Ag/AgCl reference electrode is commonly used in choline chloride based deep eutectic solvents. However, we found it undergoes significant potential shifts in electrochemical tests which previous reports largely ignored. In this work, we studied the degradation mechanism leading to its instability. Results show that due to the high Cl- concentration in ethaline, the AgCl film easily dissolves and forms AgCl2- species causing a potential shift. Therefore, we suggest a [Fe(CN)(6)](3-)/[Fe(CN)(6)](4-) reference electrode based on the reversibility and low diffusivity of [Fe(CN)(6)](3-)/[Fe(CN)(6)](4-) redox couple in ethaline, which was demonstrated to be reliable and stable over weeks of operation. (C) 2020 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.

引用

页数：4

共 25 条

[1] Eutectic-based ionic liquids with metal-containing anions and cations [J].

Abbott, Andrew P. ;

Barron, John C. ;

Ryder, Karl S. ;

Wilson, David .

CHEMISTRY-A EUROPEAN JOURNAL, 2007, 13 (22) :6495-6501

[2] Electroless deposition of metallic silver from a choline chloride-based ionic liquid: a study using acoustic impedance spectroscopy, SEM and atomic force microscopy [J].

Abbott, Andrew P. ;

Nandhra, Satvinder ;

Postlethwaite, Stella ;

Smith, Emma L. ;

Ryder, Karl S. .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2007, 9 (28) :3735-3743

[3] Ionic liquids form ideal solutions [J].

Abbott, Andrew P. ;

Frisch, Gero ;

Garrett, Holly ;

Hartley, Jennifer .

CHEMICAL COMMUNICATIONS, 2011, 47 (43) :11876-11878

[4] Influence of additives on the electrodeposition of zinc from a deep eutectic solvent [J].

Alesary, Hasan F. ;

Cihangir, Salih ;

Ballantyne, Andrew D. ;

Harris, Robert C. ;

Weston, David P. ;

Abbott, Andrew P. ;

Ryder, Karl S. .

ELECTROCHIMICA ACTA, 2019, 304 :118-130

[5] Deep eutectic solvents and applications in electrochemical sensing [J].

Brett, Christopher M. A. .

CURRENT OPINION IN ELECTROCHEMISTRY, 2018, 10 :143-148

[6] Prospects of applying ionic liquids and deep eutectic solvents for renewable energy storage by means of redox flow batteries [J].

Chakrabarti, Mohammed Harun ;

Mjalli, Farouq Sabri ;

AiNashef, Inas Muen ;

Hashim, Mohd. Ali ;

Hussain, Mohd. Azlan ;

Bahadori, Laleh ;

Low, Chee Tong John .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2014, 30 :254-270

[7] Electrochemical double layer at the interfaces of Hg/choline chloride based solvents [J].

Costa, Renata ;

Figueiredo, Marta ;

Pereira, Carlos M. ;

Silva, Fernando .

ELECTROCHIMICA ACTA, 2010, 55 (28) :8916-8920

[8] A steady-state voltammetric investigation on the oxidation of ferrocene in ethanol-water mixtures [J].

Daniele, S ;

Baldo, MA ;

Bragato, C .

ELECTROCHEMISTRY COMMUNICATIONS, 1999, 1 (01) :37-41

[9] A symmetric organic-based nonaqueous redox flow battery and its state of charge diagnostics by FTIR [J].

Duan, Wentao ;

Vemuri, Rama S. ;

Milshtein, Jarrod D. ;

Laramie, Sydney ;

Dmello, Rylan D. ;

Huang, Jinhua ;

Zhang, Lu ;

Hu, Dehong ;

Vijayakumar, M. ;

Wang, Wei ;

Liu, Jun ;

Darling, Robert M. ;

Thompson, Levi ;

Smith, Kyle ;

Moore, Jeffery S. ;

Brushett, Fikile R. ;

Wei, Xiaoliang .

JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (15) :5448-5456

[10] Voltammetric and spectroscopic study of ferrocene and hexacyanoferrate and the suitability of their redox couples as internal standards in ionic liquids [J].

Frenzel, Ninett ;

Hartley, Jennifer ;

Frisch, Gero .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2017, 19 (42) :28841-28852

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