Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5

Abstract TiNb2O7 is a promising alternative to graphite anodes currently employed in lithium‐ion batteries. The material offers a high specific capacity, good cycling stability, and better safety characteristics. The solid‐state reaction between TiO2 and Nb2O5 is the most straightforward synthesis r...

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Autores principales:	Vinícius S. G. Oliveira, Gilberto S. Falk, Dachamir Hotza, Sergio Yesid Gómez González
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	fast firing fast synthesis solid‐state reaction tape casting titanium niobate Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/da5663b889ab454b82e0d0fb3e051ad6
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spelling	oai:doaj.org-article:da5663b889ab454b82e0d0fb3e051ad62021-11-16T17:11:08ZUltrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O52578-327010.1002/ces2.10105https://doaj.org/article/da5663b889ab454b82e0d0fb3e051ad62021-11-01T00:00:00Zhttps://doi.org/10.1002/ces2.10105https://doaj.org/toc/2578-3270Abstract TiNb2O7 is a promising alternative to graphite anodes currently employed in lithium‐ion batteries. The material offers a high specific capacity, good cycling stability, and better safety characteristics. The solid‐state reaction between TiO2 and Nb2O5 is the most straightforward synthesis route to prepare TiNb2O7. It has only been documented so far to be conducted at long periods of sintering time (>10 h). In this work, we propose a fast‐firing approach to the solid‐state synthesis, which yields TiNb2O7 in less than 2 min of furnace holding time, starting from tape‐cast titania (d50 = 0.26 μm) and niobia (d50 = 0.967 μm) green compacts. Besides significantly reducing processing time, fast‐firing enabled the hindering of grain growth, producing a material with grain size ∼0.5 μm (holding time of 2 min) and ∼1 μm (5–10 min).Vinícius S. G. OliveiraGilberto S. FalkDachamir HotzaSergio Yesid Gómez GonzálezWileyarticlefast firingfast synthesissolid‐state reactiontape castingtitanium niobateClay industries. Ceramics. GlassTP785-869ENInternational Journal of Ceramic Engineering & Science, Vol 3, Iss 6, Pp 272-278 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fast firing fast synthesis solid‐state reaction tape casting titanium niobate Clay industries. Ceramics. Glass TP785-869
spellingShingle	fast firing fast synthesis solid‐state reaction tape casting titanium niobate Clay industries. Ceramics. Glass TP785-869 Vinícius S. G. Oliveira Gilberto S. Falk Dachamir Hotza Sergio Yesid Gómez González Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5
description	Abstract TiNb2O7 is a promising alternative to graphite anodes currently employed in lithium‐ion batteries. The material offers a high specific capacity, good cycling stability, and better safety characteristics. The solid‐state reaction between TiO2 and Nb2O5 is the most straightforward synthesis route to prepare TiNb2O7. It has only been documented so far to be conducted at long periods of sintering time (>10 h). In this work, we propose a fast‐firing approach to the solid‐state synthesis, which yields TiNb2O7 in less than 2 min of furnace holding time, starting from tape‐cast titania (d50 = 0.26 μm) and niobia (d50 = 0.967 μm) green compacts. Besides significantly reducing processing time, fast‐firing enabled the hindering of grain growth, producing a material with grain size ∼0.5 μm (holding time of 2 min) and ∼1 μm (5–10 min).
format	article
author	Vinícius S. G. Oliveira Gilberto S. Falk Dachamir Hotza Sergio Yesid Gómez González
author_facet	Vinícius S. G. Oliveira Gilberto S. Falk Dachamir Hotza Sergio Yesid Gómez González
author_sort	Vinícius S. G. Oliveira
title	Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5
title_short	Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5
title_full	Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5
title_fullStr	Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5
title_full_unstemmed	Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5
title_sort	ultrafast reaction‐sintering of grain size‐controlled titanium niobate from tio2 and nb2o5
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/da5663b889ab454b82e0d0fb3e051ad6
work_keys_str_mv	AT viniciussgoliveira ultrafastreactionsinteringofgrainsizecontrolledtitaniumniobatefromtio2andnb2o5 AT gilbertosfalk ultrafastreactionsinteringofgrainsizecontrolledtitaniumniobatefromtio2andnb2o5 AT dachamirhotza ultrafastreactionsinteringofgrainsizecontrolledtitaniumniobatefromtio2andnb2o5 AT sergioyesidgomezgonzalez ultrafastreactionsinteringofgrainsizecontrolledtitaniumniobatefromtio2andnb2o5
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Ultrafast reaction‐sintering of grain size‐controlled titanium niobate from TiO2 and Nb2O5

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