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A stable and high-energy aqueous aluminum based battery

Aqueous aluminum ion batteries (AAIBs) have received growing attention because of their low cost, safe operation, eco-friendliness, and high theoretical capacity. However, one of the biggest challenges for AAIBs is the poor reversibility due to the presence of an oxide layer and the accompanying hyd...

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Autores principales: Tao, Renqian, Gao, Caitian, Xie, Erqing, Wang, Bin, Lu, Bingan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9430682/
https://www.ncbi.nlm.nih.gov/pubmed/36128225
http://dx.doi.org/10.1039/d2sc03455g
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author Tao, Renqian
Gao, Caitian
Xie, Erqing
Wang, Bin
Lu, Bingan
author_facet Tao, Renqian
Gao, Caitian
Xie, Erqing
Wang, Bin
Lu, Bingan
author_sort Tao, Renqian
collection PubMed
description Aqueous aluminum ion batteries (AAIBs) have received growing attention because of their low cost, safe operation, eco-friendliness, and high theoretical capacity. However, one of the biggest challenges for AAIBs is the poor reversibility due to the presence of an oxide layer and the accompanying hydrogen evolution reaction. Herein, we develop a strongly hydrolyzed/polymerized aluminum–iron hybrid electrolyte to improve the electrochemical behavior of AAIBs. On the one hand, the designed electrolyte enables aluminum ion intercalation/deintercalation on the cathode while stable deposition/stripping of aluminium occurs on the anode. On the other hand, the electrolyte contributes to the electrochemical energy storage through an iron redox reaction. These two reactions are parallel and coupled through an Fe–Al alloy on the anode, thus enhancing the reversibility and energy density of AAIBs. As a result, this hybrid-ion battery delivers a specific volumetric capacity of 35 A h L(−1) at the current density of 1.0 mA cm(−2), and remarkable stability with a capacity retention of 90% over 500 cycles. Furthermore, the hybrid-ion battery achieves a high energy density of approximately 42 W h L(−1) with an average operating voltage of 1.1 V. This green electrolyte for high-energy AAIBs holds promises for large-scale energy storage applications.
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spelling pubmed-94306822022-09-19 A stable and high-energy aqueous aluminum based battery Tao, Renqian Gao, Caitian Xie, Erqing Wang, Bin Lu, Bingan Chem Sci Chemistry Aqueous aluminum ion batteries (AAIBs) have received growing attention because of their low cost, safe operation, eco-friendliness, and high theoretical capacity. However, one of the biggest challenges for AAIBs is the poor reversibility due to the presence of an oxide layer and the accompanying hydrogen evolution reaction. Herein, we develop a strongly hydrolyzed/polymerized aluminum–iron hybrid electrolyte to improve the electrochemical behavior of AAIBs. On the one hand, the designed electrolyte enables aluminum ion intercalation/deintercalation on the cathode while stable deposition/stripping of aluminium occurs on the anode. On the other hand, the electrolyte contributes to the electrochemical energy storage through an iron redox reaction. These two reactions are parallel and coupled through an Fe–Al alloy on the anode, thus enhancing the reversibility and energy density of AAIBs. As a result, this hybrid-ion battery delivers a specific volumetric capacity of 35 A h L(−1) at the current density of 1.0 mA cm(−2), and remarkable stability with a capacity retention of 90% over 500 cycles. Furthermore, the hybrid-ion battery achieves a high energy density of approximately 42 W h L(−1) with an average operating voltage of 1.1 V. This green electrolyte for high-energy AAIBs holds promises for large-scale energy storage applications. The Royal Society of Chemistry 2022-07-28 /pmc/articles/PMC9430682/ /pubmed/36128225 http://dx.doi.org/10.1039/d2sc03455g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Tao, Renqian
Gao, Caitian
Xie, Erqing
Wang, Bin
Lu, Bingan
A stable and high-energy aqueous aluminum based battery
title A stable and high-energy aqueous aluminum based battery
title_full A stable and high-energy aqueous aluminum based battery
title_fullStr A stable and high-energy aqueous aluminum based battery
title_full_unstemmed A stable and high-energy aqueous aluminum based battery
title_short A stable and high-energy aqueous aluminum based battery
title_sort stable and high-energy aqueous aluminum based battery
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9430682/
https://www.ncbi.nlm.nih.gov/pubmed/36128225
http://dx.doi.org/10.1039/d2sc03455g
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