Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries

Abstract Si nanowires/nanorods are known to enhance the cycle performance of the lithium-ion batteries. However, viable high throughput production of Si nanomaterials has not yet attained as it requires in general expensive gas source and low-rate and multiple-step approach. As one of the potential...

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Autores principales:	Akihiro Tanaka, Ryoshi Ohta, Masashi Dougakiuchi, Toshimi Tanaka, Akira Takeuchi, Kenichi Fukuda, Makoto Kambara
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/821a90a401984bef92786ec89aa98ade
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spelling	oai:doaj.org-article:821a90a401984bef92786ec89aa98ade2021-11-21T12:20:51ZSilicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries10.1038/s41598-021-01984-y2045-2322https://doaj.org/article/821a90a401984bef92786ec89aa98ade2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01984-yhttps://doaj.org/toc/2045-2322Abstract Si nanowires/nanorods are known to enhance the cycle performance of the lithium-ion batteries. However, viable high throughput production of Si nanomaterials has not yet attained as it requires in general expensive gas source and low-rate and multiple-step approach. As one of the potential approaches, in this work, we report the fast-rate Si nanorod synthesis from low-cost powder source by the modified plasma flash evaporation and the fundamental principle of structural formation during gas co-condensation. In this process, while Si vapors are formed in high temperature plasma jet, molten copper droplets are produced separately at the low temperature region as catalysts for growth of silicon nanorods. Si rods with several micrometers long and a few hundred of nanometers in diameter were produced in a single process at rates up to 40 µm s−1. The growth of the Si nanorods from powder source is primarily characterized by the vapor–liquid–solid growth which is accelerated by the heat extraction at the growth point. The battery cells with the Si nanorods as the anode have shown that a higher capacity and better cyclability is achieved for the nanorods with higher aspect ratios.Akihiro TanakaRyoshi OhtaMasashi DougakiuchiToshimi TanakaAkira TakeuchiKenichi FukudaMakoto KambaraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Akihiro Tanaka Ryoshi Ohta Masashi Dougakiuchi Toshimi Tanaka Akira Takeuchi Kenichi Fukuda Makoto Kambara Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
description	Abstract Si nanowires/nanorods are known to enhance the cycle performance of the lithium-ion batteries. However, viable high throughput production of Si nanomaterials has not yet attained as it requires in general expensive gas source and low-rate and multiple-step approach. As one of the potential approaches, in this work, we report the fast-rate Si nanorod synthesis from low-cost powder source by the modified plasma flash evaporation and the fundamental principle of structural formation during gas co-condensation. In this process, while Si vapors are formed in high temperature plasma jet, molten copper droplets are produced separately at the low temperature region as catalysts for growth of silicon nanorods. Si rods with several micrometers long and a few hundred of nanometers in diameter were produced in a single process at rates up to 40 µm s−1. The growth of the Si nanorods from powder source is primarily characterized by the vapor–liquid–solid growth which is accelerated by the heat extraction at the growth point. The battery cells with the Si nanorods as the anode have shown that a higher capacity and better cyclability is achieved for the nanorods with higher aspect ratios.
format	article
author	Akihiro Tanaka Ryoshi Ohta Masashi Dougakiuchi Toshimi Tanaka Akira Takeuchi Kenichi Fukuda Makoto Kambara
author_facet	Akihiro Tanaka Ryoshi Ohta Masashi Dougakiuchi Toshimi Tanaka Akira Takeuchi Kenichi Fukuda Makoto Kambara
author_sort	Akihiro Tanaka
title	Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
title_short	Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
title_full	Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
title_fullStr	Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
title_full_unstemmed	Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
title_sort	silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/821a90a401984bef92786ec89aa98ade
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Silicon nanorod formation from powder feedstock through co-condensation in plasma flash evaporation and its feasibility for lithium-ion batteries

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