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A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries

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Main Author: W. Sánchez-Ortiz
Other Authors: J. Aldana-González
Format: Article
Language:English
Published: Journal of The Electrochemical Society 2021
Online Access:https://iopscience.iop.org/article/10.1149/1945-7111/abdb01#Acknowledgments
https://dlib.phenikaa-uni.edu.vn/handle/PNK/1774
https://doi.org/10.1149/1945-7111/abdb01
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spelling oai:localhost:PNK-17742022-08-17T05:54:43Z A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries W. Sánchez-Ortiz J. Aldana-González Tu Le Manh M. Romero-Romo I. Mejía-Caballero M. T. Ramírez-Silva E. M. Arce-Estrada V. Mugica-Álvarez M. Palomar-Pardavé Q1 It is shown for the first time that the deep eutectic solvent, DES, formed by acetylcholine chloride and urea can be successfully used for Ag recovery from the cathode powder of spent silver oxide batteries. This DES performs two important functions namely, as selective leaching liquor to extract Ag(I) ions from the remaining Ag2O, leaving intact the metallic Ag in the solid phase, and as electrolytic bath for silver electrodeposition onto a glassy carbon electrode or graphite. Using potentiodynamic and potentiostatic electrochemical measurements, it was possible to quantify both: the Ag(I) leaching rate and the concentration of Ag(I) ions leached after 24 h. From this value, it was possible to estimate that about 7% of the original mass of the cathode powder corresponds to Ag2O and the rest to metallic Ag. Moreover, from potentiostatic current density transients, recorded during Ag electrodeposition, it was shown, for the first time in this DES, that this process occurs via multiple 3D nucleation with diffusion-controlled growth and valuable practical information i.e. the diffusion coefficient of Ag(I) ions in this media was quantified. From scanning electron microscopy images and energy-dispersive X-ray spectroscopy, the morphology and composition of the resulting deposits were characterized. 2021-06-15T07:18:20Z 2021-06-15T07:18:20Z 2021 Article Working Paper https://iopscience.iop.org/article/10.1149/1945-7111/abdb01#Acknowledgments https://dlib.phenikaa-uni.edu.vn/handle/PNK/1774 https://doi.org/10.1149/1945-7111/abdb01 en application/pdf Journal of The Electrochemical Society
institution Digital Phenikaa
collection Digital Phenikaa
language English
description Q1
author2 J. Aldana-González
author_facet J. Aldana-González
W. Sánchez-Ortiz
format Article
author W. Sánchez-Ortiz
spellingShingle W. Sánchez-Ortiz
A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries
author_sort W. Sánchez-Ortiz
title A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries
title_short A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries
title_full A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries
title_fullStr A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries
title_full_unstemmed A Deep Eutectic Solvent as Leaching Agent and Electrolytic Bath for Silver Recovery from Spent Silver Oxide Batteries
title_sort deep eutectic solvent as leaching agent and electrolytic bath for silver recovery from spent silver oxide batteries
publisher Journal of The Electrochemical Society
publishDate 2021
url https://iopscience.iop.org/article/10.1149/1945-7111/abdb01#Acknowledgments
https://dlib.phenikaa-uni.edu.vn/handle/PNK/1774
https://doi.org/10.1149/1945-7111/abdb01
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score 8.887836

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