Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life

Abstract Rechargeable lithium batteries have been well-known and indispensable for portable electronic devices, and have the potential to be used in electric vehicles and smart grids. However, the growing concerns about the availability of lithium resources for large-scale applications have revived...

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Autores principales:	Shufeng Song, Masashi Kotobuki, Yingqian Chen, Sergei Manzhos, Chaohe Xu, Ning Hu, Li Lu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cdbf680b28b14361bcb3fbaf5a2372d8
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spelling	oai:doaj.org-article:cdbf680b28b14361bcb3fbaf5a2372d82021-12-02T15:06:27ZNa-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life10.1038/s41598-017-00346-x2045-2322https://doaj.org/article/cdbf680b28b14361bcb3fbaf5a2372d82017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00346-xhttps://doaj.org/toc/2045-2322Abstract Rechargeable lithium batteries have been well-known and indispensable for portable electronic devices, and have the potential to be used in electric vehicles and smart grids. However, the growing concerns about the availability of lithium resources for large-scale applications have revived interest in sodium ion batteries. Of many obstacles to commercialization of Na-ion batteries, achieving simultaneously a large reversible capacity and good cycling capability of electrode materials remains a major challenge. Here, we report a new cathode material, Na-rich layered oxide Na2Ti0.94Cr0.06O2.97, that delivers high reversible capacity of 336 mAh g−1 at current density of 18.9 mA g−1 along with promising cycling capability of 74% capacity retention over 1000 cycles at current of 378 mA g−1. The high capacity is associated to the redox reaction of oxygen, which is confirmed here by a combined experimental and theoretical study. The present work therefore shows that materials beyond mainstream layered oxides and polyanion compounds should be considered as candidate high-performance cathodes for Na-ion batteries.Shufeng SongMasashi KotobukiYingqian ChenSergei ManzhosChaohe XuNing HuLi LuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shufeng Song Masashi Kotobuki Yingqian Chen Sergei Manzhos Chaohe Xu Ning Hu Li Lu Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life
description	Abstract Rechargeable lithium batteries have been well-known and indispensable for portable electronic devices, and have the potential to be used in electric vehicles and smart grids. However, the growing concerns about the availability of lithium resources for large-scale applications have revived interest in sodium ion batteries. Of many obstacles to commercialization of Na-ion batteries, achieving simultaneously a large reversible capacity and good cycling capability of electrode materials remains a major challenge. Here, we report a new cathode material, Na-rich layered oxide Na2Ti0.94Cr0.06O2.97, that delivers high reversible capacity of 336 mAh g−1 at current density of 18.9 mA g−1 along with promising cycling capability of 74% capacity retention over 1000 cycles at current of 378 mA g−1. The high capacity is associated to the redox reaction of oxygen, which is confirmed here by a combined experimental and theoretical study. The present work therefore shows that materials beyond mainstream layered oxides and polyanion compounds should be considered as candidate high-performance cathodes for Na-ion batteries.
format	article
author	Shufeng Song Masashi Kotobuki Yingqian Chen Sergei Manzhos Chaohe Xu Ning Hu Li Lu
author_facet	Shufeng Song Masashi Kotobuki Yingqian Chen Sergei Manzhos Chaohe Xu Ning Hu Li Lu
author_sort	Shufeng Song
title	Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life
title_short	Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life
title_full	Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life
title_fullStr	Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life
title_full_unstemmed	Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life
title_sort	na-rich layered na2ti1−xcrxo3−x/2 (x = 0, 0.06): na-ion battery cathode materials with high capacity and long cycle life
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/cdbf680b28b14361bcb3fbaf5a2372d8
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Na-rich layered Na2Ti1−xCrxO3−x/2 (x = 0, 0.06): Na-ion battery cathode materials with high capacity and long cycle life

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