Copper electrodeposition from a water-containing choline chloride based deep eutectic solvent

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Abstract

This study investigated the effect of water on the physical and electrochemical properties of a choline chloride deep eutectic solvent (DES). Physical and electrochemical measurements were performed on the DES containing varying amounts of water. When the water content was increased from 1% to 15 wt%, the viscosity and density declined while the conductivity increased significantly. Similarly, the limiting current for Cu reduction at 15 wt% of water was also found to be three times greater than the limiting current at 1 wt% of water. This latter effect could be mostly attributed to viscosity changes, but there was evidence of deviations from ideal Stokes-Einstein behaviour. These experimental results show that inclusion of water facilitates ion mobility, and generally results in improved electrochemical characteristics.
LanguageEnglish
Pages859-864
Number of pages6
JournalECS Transactions
Volume77
Issue number11
DOIs
Publication statusPublished - 1 Aug 2017

Fingerprint

Choline
Electrodeposition
Eutectics
Copper
Water
Viscosity
Electrochemical properties
Water content
Physical properties
Ions

Keywords

  • deep eutectic solvents
  • DES
  • Stokes-Einstein behaviour
  • ionic liquids
  • ILs

Cite this

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title = "Copper electrodeposition from a water-containing choline chloride based deep eutectic solvent",
abstract = "This study investigated the effect of water on the physical and electrochemical properties of a choline chloride deep eutectic solvent (DES). Physical and electrochemical measurements were performed on the DES containing varying amounts of water. When the water content was increased from 1{\%} to 15 wt{\%}, the viscosity and density declined while the conductivity increased significantly. Similarly, the limiting current for Cu reduction at 15 wt{\%} of water was also found to be three times greater than the limiting current at 1 wt{\%} of water. This latter effect could be mostly attributed to viscosity changes, but there was evidence of deviations from ideal Stokes-Einstein behaviour. These experimental results show that inclusion of water facilitates ion mobility, and generally results in improved electrochemical characteristics.",
keywords = "deep eutectic solvents, DES, Stokes-Einstein behaviour, ionic liquids, ILs",
author = "Priscila Valverde and Todd Green and Sudipta Roy",
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T1 - Copper electrodeposition from a water-containing choline chloride based deep eutectic solvent

AU - Valverde, Priscila

AU - Green, Todd

AU - Roy, Sudipta

PY - 2017/8/1

Y1 - 2017/8/1

N2 - This study investigated the effect of water on the physical and electrochemical properties of a choline chloride deep eutectic solvent (DES). Physical and electrochemical measurements were performed on the DES containing varying amounts of water. When the water content was increased from 1% to 15 wt%, the viscosity and density declined while the conductivity increased significantly. Similarly, the limiting current for Cu reduction at 15 wt% of water was also found to be three times greater than the limiting current at 1 wt% of water. This latter effect could be mostly attributed to viscosity changes, but there was evidence of deviations from ideal Stokes-Einstein behaviour. These experimental results show that inclusion of water facilitates ion mobility, and generally results in improved electrochemical characteristics.

AB - This study investigated the effect of water on the physical and electrochemical properties of a choline chloride deep eutectic solvent (DES). Physical and electrochemical measurements were performed on the DES containing varying amounts of water. When the water content was increased from 1% to 15 wt%, the viscosity and density declined while the conductivity increased significantly. Similarly, the limiting current for Cu reduction at 15 wt% of water was also found to be three times greater than the limiting current at 1 wt% of water. This latter effect could be mostly attributed to viscosity changes, but there was evidence of deviations from ideal Stokes-Einstein behaviour. These experimental results show that inclusion of water facilitates ion mobility, and generally results in improved electrochemical characteristics.

KW - deep eutectic solvents

KW - DES

KW - Stokes-Einstein behaviour

KW - ionic liquids

KW - ILs

UR - http://ecst.ecsdl.org/

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T2 - ECS Transactions

JF - ECS Transactions

SN - 1938-5862

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