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Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive

Zinc–air batteries (ZABs) offer high specific energy and low-cost production. However, rechargeable ZABs suffer from a limited cycle life. This paper reports that potassium persulfate (KPS) additive in an alkaline electrolyte can effectively enhance the performance and electrochemical characteristic...

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Autores principales: Khezri, Ramin, Hosseini, Soraya, Lahiri, Abhishek, Motlagh, Shiva Rezaei, Nguyen, Mai Thanh, Yonezawa, Tetsu, Kheawhom, Soorathep
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7582734/
https://www.ncbi.nlm.nih.gov/pubmed/33023274
http://dx.doi.org/10.3390/ijms21197303
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author Khezri, Ramin
Hosseini, Soraya
Lahiri, Abhishek
Motlagh, Shiva Rezaei
Nguyen, Mai Thanh
Yonezawa, Tetsu
Kheawhom, Soorathep
author_facet Khezri, Ramin
Hosseini, Soraya
Lahiri, Abhishek
Motlagh, Shiva Rezaei
Nguyen, Mai Thanh
Yonezawa, Tetsu
Kheawhom, Soorathep
author_sort Khezri, Ramin
collection PubMed
description Zinc–air batteries (ZABs) offer high specific energy and low-cost production. However, rechargeable ZABs suffer from a limited cycle life. This paper reports that potassium persulfate (KPS) additive in an alkaline electrolyte can effectively enhance the performance and electrochemical characteristics of rechargeable zinc–air flow batteries (ZAFBs). Introducing redox additives into electrolytes is an effective approach to promote battery performance. With the addition of 450 ppm KPS, remarkable improvement in anodic currents corresponding to zinc (Zn) dissolution and limited passivation of the Zn surface is observed, thus indicating its strong effect on the redox reaction of Zn. Besides, the addition of 450 ppm KPS reduces the corrosion rate of Zn, enhances surface reactions and decreases the solution resistance. However, excess KPS (900 and 1350 ppm) has a negative effect on rechargeable ZAFBs, which leads to a shorter cycle life and poor cyclability. The rechargeable ZAFB, using 450 ppm KPS, exhibits a highly stable charge/discharge voltage for 800 cycles. Overall, KPS demonstrates great promise for the enhancement of the charge/discharge performance of rechargeable ZABs.
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spelling pubmed-75827342020-10-28 Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive Khezri, Ramin Hosseini, Soraya Lahiri, Abhishek Motlagh, Shiva Rezaei Nguyen, Mai Thanh Yonezawa, Tetsu Kheawhom, Soorathep Int J Mol Sci Article Zinc–air batteries (ZABs) offer high specific energy and low-cost production. However, rechargeable ZABs suffer from a limited cycle life. This paper reports that potassium persulfate (KPS) additive in an alkaline electrolyte can effectively enhance the performance and electrochemical characteristics of rechargeable zinc–air flow batteries (ZAFBs). Introducing redox additives into electrolytes is an effective approach to promote battery performance. With the addition of 450 ppm KPS, remarkable improvement in anodic currents corresponding to zinc (Zn) dissolution and limited passivation of the Zn surface is observed, thus indicating its strong effect on the redox reaction of Zn. Besides, the addition of 450 ppm KPS reduces the corrosion rate of Zn, enhances surface reactions and decreases the solution resistance. However, excess KPS (900 and 1350 ppm) has a negative effect on rechargeable ZAFBs, which leads to a shorter cycle life and poor cyclability. The rechargeable ZAFB, using 450 ppm KPS, exhibits a highly stable charge/discharge voltage for 800 cycles. Overall, KPS demonstrates great promise for the enhancement of the charge/discharge performance of rechargeable ZABs. MDPI 2020-10-02 /pmc/articles/PMC7582734/ /pubmed/33023274 http://dx.doi.org/10.3390/ijms21197303 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Khezri, Ramin
Hosseini, Soraya
Lahiri, Abhishek
Motlagh, Shiva Rezaei
Nguyen, Mai Thanh
Yonezawa, Tetsu
Kheawhom, Soorathep
Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive
title Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive
title_full Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive
title_fullStr Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive
title_full_unstemmed Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive
title_short Enhanced Cycling Performance of Rechargeable Zinc–Air Flow Batteries Using Potassium Persulfate as Electrolyte Additive
title_sort enhanced cycling performance of rechargeable zinc–air flow batteries using potassium persulfate as electrolyte additive
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7582734/
https://www.ncbi.nlm.nih.gov/pubmed/33023274
http://dx.doi.org/10.3390/ijms21197303
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