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Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries
The protection of zinc anodes in zinc–air batteries (ZABs) is an efficient way to reduce corrosion and Zn dendrite formation and improve cyclability and battery efficiency. Anion-conducting poly(N-vinylbenzyl N,N,N-trimethylammonium)chloride (PVBTMA) thin films were electrodeposited directly on zinc...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385867/ https://www.ncbi.nlm.nih.gov/pubmed/37505046 http://dx.doi.org/10.3390/membranes13070680 |
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author | Kwarteng, Papa K. Syahputra, Suanto Pasquini, Luca Vacandio, Florence Di Vona, Maria Luisa Knauth, Philippe |
author_facet | Kwarteng, Papa K. Syahputra, Suanto Pasquini, Luca Vacandio, Florence Di Vona, Maria Luisa Knauth, Philippe |
author_sort | Kwarteng, Papa K. |
collection | PubMed |
description | The protection of zinc anodes in zinc–air batteries (ZABs) is an efficient way to reduce corrosion and Zn dendrite formation and improve cyclability and battery efficiency. Anion-conducting poly(N-vinylbenzyl N,N,N-trimethylammonium)chloride (PVBTMA) thin films were electrodeposited directly on zinc metal using cyclic voltammetry. This deposition process presents a combination of advantages, including selective anion transport in PVBTMA reducing zinc crossover, high interface quality by electrodeposition improving the corrosion protection of zinc and high ionomer stiffness opposing zinc dendrite perforation. The PVBTMA layer was observed by optical and electron microscopy, and the wettability of the ionomer-coated surface was investigated by contact angle measurements. ZABs with PVBTMA-coated Zn showed an appreciable and stable open-circuit voltage both in alkaline electrolyte (1.55 V with a Pt cathode) and in miniaturized batteries (1.31 V with a carbon paper cathode). Cycling tests at 0.5 mA/cm(2) within voltage limits of 2.1 and 0.8 V gave a stable discharge capacity for nearly 100 cycles with a liquid electrolyte and more than 20 cycles in miniaturized batteries. The faster degradation of the latter ZAB was attributed to the clogging of the carbon air cathode and drying or carbonation of the electrolyte sorbed in a Whatman paper. |
format | Online Article Text |
id | pubmed-10385867 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103858672023-07-30 Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries Kwarteng, Papa K. Syahputra, Suanto Pasquini, Luca Vacandio, Florence Di Vona, Maria Luisa Knauth, Philippe Membranes (Basel) Article The protection of zinc anodes in zinc–air batteries (ZABs) is an efficient way to reduce corrosion and Zn dendrite formation and improve cyclability and battery efficiency. Anion-conducting poly(N-vinylbenzyl N,N,N-trimethylammonium)chloride (PVBTMA) thin films were electrodeposited directly on zinc metal using cyclic voltammetry. This deposition process presents a combination of advantages, including selective anion transport in PVBTMA reducing zinc crossover, high interface quality by electrodeposition improving the corrosion protection of zinc and high ionomer stiffness opposing zinc dendrite perforation. The PVBTMA layer was observed by optical and electron microscopy, and the wettability of the ionomer-coated surface was investigated by contact angle measurements. ZABs with PVBTMA-coated Zn showed an appreciable and stable open-circuit voltage both in alkaline electrolyte (1.55 V with a Pt cathode) and in miniaturized batteries (1.31 V with a carbon paper cathode). Cycling tests at 0.5 mA/cm(2) within voltage limits of 2.1 and 0.8 V gave a stable discharge capacity for nearly 100 cycles with a liquid electrolyte and more than 20 cycles in miniaturized batteries. The faster degradation of the latter ZAB was attributed to the clogging of the carbon air cathode and drying or carbonation of the electrolyte sorbed in a Whatman paper. MDPI 2023-07-20 /pmc/articles/PMC10385867/ /pubmed/37505046 http://dx.doi.org/10.3390/membranes13070680 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kwarteng, Papa K. Syahputra, Suanto Pasquini, Luca Vacandio, Florence Di Vona, Maria Luisa Knauth, Philippe Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries |
title | Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries |
title_full | Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries |
title_fullStr | Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries |
title_full_unstemmed | Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries |
title_short | Electrodeposited Ionomer Protection Layer for Negative Electrodes in Zinc–Air Batteries |
title_sort | electrodeposited ionomer protection layer for negative electrodes in zinc–air batteries |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385867/ https://www.ncbi.nlm.nih.gov/pubmed/37505046 http://dx.doi.org/10.3390/membranes13070680 |
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