Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries

Transition metal oxides are promising electrocatalysts for zinc-air batteries, yet surface reconstruction caused by the adsorbate evolution mechanism, which induces zinc-ion battery behavior in the oxygen evolution reaction, leads to poor cycling performance. In this study, we propose a lattice oxyg...

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Autores principales: Wang, Yaobin, Ge, Xinlei, Lu, Qian, Bai, Wenjun, Ye, Caichao, Shao, Zongping, Bu, Yunfei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
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Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618233/
https://www.ncbi.nlm.nih.gov/pubmed/37907458
http://dx.doi.org/10.1038/s41467-023-42728-y
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author Wang, Yaobin
Ge, Xinlei
Lu, Qian
Bai, Wenjun
Ye, Caichao
Shao, Zongping
Bu, Yunfei
author_facet Wang, Yaobin
Ge, Xinlei
Lu, Qian
Bai, Wenjun
Ye, Caichao
Shao, Zongping
Bu, Yunfei
author_sort Wang, Yaobin
collection PubMed
description Transition metal oxides are promising electrocatalysts for zinc-air batteries, yet surface reconstruction caused by the adsorbate evolution mechanism, which induces zinc-ion battery behavior in the oxygen evolution reaction, leads to poor cycling performance. In this study, we propose a lattice oxygen mechanism involving proton acceptors to overcome the poor performance of the battery in the OER process. We introduce a stable solid base, hydroxy BaCaSiO(4), onto the surfaces of PrBa(0.5)Ca(0.5)Co(2)O(5+δ) perovskite nanofibers with a one-step exsolution strategy. The HO-Si sites on the hydroxy BaCaSiO(4) significantly accelerate proton transfer from the OH* adsorbed on PrBa(0.5)Ca(0.5)Co(2)O(5+δ) during the OER process. As a proof of concept, a rechargeable zinc-air battery assembled with this composite electrocatalyst is stable in an alkaline environment for over 150 hours at 5 mA cm(–2) during galvanostatic charge/discharge tests. Our findings open new avenues for designing efficient OER electrocatalysts for rechargeable zinc-air batteries.
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spelling pubmed-106182332023-11-02 Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries Wang, Yaobin Ge, Xinlei Lu, Qian Bai, Wenjun Ye, Caichao Shao, Zongping Bu, Yunfei Nat Commun Article Transition metal oxides are promising electrocatalysts for zinc-air batteries, yet surface reconstruction caused by the adsorbate evolution mechanism, which induces zinc-ion battery behavior in the oxygen evolution reaction, leads to poor cycling performance. In this study, we propose a lattice oxygen mechanism involving proton acceptors to overcome the poor performance of the battery in the OER process. We introduce a stable solid base, hydroxy BaCaSiO(4), onto the surfaces of PrBa(0.5)Ca(0.5)Co(2)O(5+δ) perovskite nanofibers with a one-step exsolution strategy. The HO-Si sites on the hydroxy BaCaSiO(4) significantly accelerate proton transfer from the OH* adsorbed on PrBa(0.5)Ca(0.5)Co(2)O(5+δ) during the OER process. As a proof of concept, a rechargeable zinc-air battery assembled with this composite electrocatalyst is stable in an alkaline environment for over 150 hours at 5 mA cm(–2) during galvanostatic charge/discharge tests. Our findings open new avenues for designing efficient OER electrocatalysts for rechargeable zinc-air batteries. Nature Publishing Group UK 2023-11-01 /pmc/articles/PMC10618233/ /pubmed/37907458 http://dx.doi.org/10.1038/s41467-023-42728-y Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Wang, Yaobin
Ge, Xinlei
Lu, Qian
Bai, Wenjun
Ye, Caichao
Shao, Zongping
Bu, Yunfei
Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
title Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
title_full Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
title_fullStr Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
title_full_unstemmed Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
title_short Accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
title_sort accelerated deprotonation with a hydroxy-silicon alkali solid for rechargeable zinc-air batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10618233/
https://www.ncbi.nlm.nih.gov/pubmed/37907458
http://dx.doi.org/10.1038/s41467-023-42728-y
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