Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels

High surface area RuO2–TiO2 composite aerogels with different RuO2 concentrations were prepared through a modified non-alkoxide sol-gel route, followed by CO2 supercritical drying and evaluated as electrodes for energy storage devices. The TiO2 aerogels were synthesized via an ethanolic solution of...

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Autores principales:	Gabriella M.V. Dias, Joseane C. Bernardes, Bruno N. Wesling, Daliana Müller, Larissa S. Marques, Carlos R. Rambo
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Aerogels TiO2–RuO2 nanocomposites Specific surface area Sol-gel Electrochemical capacitance Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/6d5318feacca484d869c6311979891b7
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spelling	oai:doaj.org-article:6d5318feacca484d869c6311979891b72021-11-12T04:48:21ZPreparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels2666-539510.1016/j.oceram.2021.100196https://doaj.org/article/6d5318feacca484d869c6311979891b72021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666539521001425https://doaj.org/toc/2666-5395High surface area RuO2–TiO2 composite aerogels with different RuO2 concentrations were prepared through a modified non-alkoxide sol-gel route, followed by CO2 supercritical drying and evaluated as electrodes for energy storage devices. The TiO2 aerogels were synthesized via an ethanolic solution of TiCl3 with RuO2 being incorporated with an acidic solution of RuCl3.xH2O in different concentrations to obtain composite aerogels with 10 and 15 wt% RuO2. The aerogels were heat treated in different temperatures and characterized to evaluate the effect of the RuO2 on their specific capacitance. A specific capacitance of 25 F/g was obtained from TiO2–RuO2 aerogels containing with 10 wt% RuO2. Aerogels annealed at 450 °C exhibited lower electrochemical capacitance than the as-synthesized ones. Despite the relatively low specific capacitance, TiO2–RuO2 aerogels exhibited a remarkably high specific surface area of 316 m2/g, which make them useful for several other applications.Gabriella M.V. DiasJoseane C. BernardesBruno N. WeslingDaliana MüllerLarissa S. MarquesCarlos R. RamboElsevierarticleAerogelsTiO2–RuO2 nanocompositesSpecific surface areaSol-gelElectrochemical capacitanceClay industries. Ceramics. GlassTP785-869ENOpen Ceramics, Vol 8, Iss , Pp 100196- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aerogels TiO2–RuO2 nanocomposites Specific surface area Sol-gel Electrochemical capacitance Clay industries. Ceramics. Glass TP785-869
spellingShingle	Aerogels TiO2–RuO2 nanocomposites Specific surface area Sol-gel Electrochemical capacitance Clay industries. Ceramics. Glass TP785-869 Gabriella M.V. Dias Joseane C. Bernardes Bruno N. Wesling Daliana Müller Larissa S. Marques Carlos R. Rambo Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
description	High surface area RuO2–TiO2 composite aerogels with different RuO2 concentrations were prepared through a modified non-alkoxide sol-gel route, followed by CO2 supercritical drying and evaluated as electrodes for energy storage devices. The TiO2 aerogels were synthesized via an ethanolic solution of TiCl3 with RuO2 being incorporated with an acidic solution of RuCl3.xH2O in different concentrations to obtain composite aerogels with 10 and 15 wt% RuO2. The aerogels were heat treated in different temperatures and characterized to evaluate the effect of the RuO2 on their specific capacitance. A specific capacitance of 25 F/g was obtained from TiO2–RuO2 aerogels containing with 10 wt% RuO2. Aerogels annealed at 450 °C exhibited lower electrochemical capacitance than the as-synthesized ones. Despite the relatively low specific capacitance, TiO2–RuO2 aerogels exhibited a remarkably high specific surface area of 316 m2/g, which make them useful for several other applications.
format	article
author	Gabriella M.V. Dias Joseane C. Bernardes Bruno N. Wesling Daliana Müller Larissa S. Marques Carlos R. Rambo
author_facet	Gabriella M.V. Dias Joseane C. Bernardes Bruno N. Wesling Daliana Müller Larissa S. Marques Carlos R. Rambo
author_sort	Gabriella M.V. Dias
title	Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
title_short	Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
title_full	Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
title_fullStr	Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
title_full_unstemmed	Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels
title_sort	preparation and electrochemical capacitance of high surface area tio2–ruo2 aerogels
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/6d5318feacca484d869c6311979891b7
work_keys_str_mv	AT gabriellamvdias preparationandelectrochemicalcapacitanceofhighsurfaceareatio2ruo2aerogels AT joseanecbernardes preparationandelectrochemicalcapacitanceofhighsurfaceareatio2ruo2aerogels AT brunonwesling preparationandelectrochemicalcapacitanceofhighsurfaceareatio2ruo2aerogels AT dalianamuller preparationandelectrochemicalcapacitanceofhighsurfaceareatio2ruo2aerogels AT larissasmarques preparationandelectrochemicalcapacitanceofhighsurfaceareatio2ruo2aerogels AT carlosrrambo preparationandelectrochemicalcapacitanceofhighsurfaceareatio2ruo2aerogels
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Preparation and electrochemical capacitance of high surface area TiO2–RuO2 aerogels

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