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A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator

The issue of uncontrollable Li dendrite growth, caused by irregular lithium deposition, restricts the wide applications of Li metal based high energy batteries. In this paper, a polypropylene separator with a sputtered platinum nanolayer has been developed to improve the stability of the Li metal an...

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Detalles Bibliográficos
Autores principales: Wen, Kaihua, Liu, Lili, Chen, Shimou, Zhang, Suojiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079675/
https://www.ncbi.nlm.nih.gov/pubmed/35541223
http://dx.doi.org/10.1039/c8ra02140f
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author Wen, Kaihua
Liu, Lili
Chen, Shimou
Zhang, Suojiang
author_facet Wen, Kaihua
Liu, Lili
Chen, Shimou
Zhang, Suojiang
author_sort Wen, Kaihua
collection PubMed
description The issue of uncontrollable Li dendrite growth, caused by irregular lithium deposition, restricts the wide applications of Li metal based high energy batteries. In this paper, a polypropylene separator with a sputtered platinum nanolayer has been developed to improve the stability of the Li metal anodes. It was found that cells using the modified separators resulted in a smooth Li surface and a stable “electrode–electrolyte” interface. On the one hand, platinum nanolayers can enhance the mechanical properties and micro-structures of commercial polypropylene separators. On the other hand, platinum nanolayers provide stable Li deposition during repeated charging/discharging by a bidirectional growth mechanism. After long-time cycling, the dendrites from opposite directions and dead Li are integrated into a flat and dense new-formed Li anode, decreasing the risk of low Coulombic efficiency and cycling instability that may end in cell failure. This design may provide new ideas in next-generation energy storage systems for advanced stable metallic battery technologies.
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spelling pubmed-90796752022-05-09 A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator Wen, Kaihua Liu, Lili Chen, Shimou Zhang, Suojiang RSC Adv Chemistry The issue of uncontrollable Li dendrite growth, caused by irregular lithium deposition, restricts the wide applications of Li metal based high energy batteries. In this paper, a polypropylene separator with a sputtered platinum nanolayer has been developed to improve the stability of the Li metal anodes. It was found that cells using the modified separators resulted in a smooth Li surface and a stable “electrode–electrolyte” interface. On the one hand, platinum nanolayers can enhance the mechanical properties and micro-structures of commercial polypropylene separators. On the other hand, platinum nanolayers provide stable Li deposition during repeated charging/discharging by a bidirectional growth mechanism. After long-time cycling, the dendrites from opposite directions and dead Li are integrated into a flat and dense new-formed Li anode, decreasing the risk of low Coulombic efficiency and cycling instability that may end in cell failure. This design may provide new ideas in next-generation energy storage systems for advanced stable metallic battery technologies. The Royal Society of Chemistry 2018-04-09 /pmc/articles/PMC9079675/ /pubmed/35541223 http://dx.doi.org/10.1039/c8ra02140f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Wen, Kaihua
Liu, Lili
Chen, Shimou
Zhang, Suojiang
A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
title A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
title_full A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
title_fullStr A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
title_full_unstemmed A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
title_short A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
title_sort bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9079675/
https://www.ncbi.nlm.nih.gov/pubmed/35541223
http://dx.doi.org/10.1039/c8ra02140f
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