Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides

[En] Cobalt-silicon oxycarbide materials (Co–SiOC) have been produced through the polymer-derived ceramic route by incorporating Cobalt acetate in different proportions. HF etching of the obtained materials leads to obtaining C-rich Co–SiOC materials where the constituent phases present different ch...

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Authors: Tamayo Hernando, Aitana, Rodríguez González, M. Ángeles, Colomer, María T., Sánchez, Elizabeth, Mazo Fernández, María Alejandra, Rubio Alonso, Juan
Format: article
Status:Versión aceptada para publicación
Publication Date:2020
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/229244
Online Access:http://hdl.handle.net/10261/229244
Access Level:Open access
Keyword:Silicon oxycarbide
Cobalt
Capacitance
Nanostructured material
Graphite
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repository_id_str
spelling Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbidesTamayo Hernando, AitanaRodríguez González, M. ÁngelesColomer, María T.Sánchez, ElizabethMazo Fernández, María AlejandraRubio Alonso, JuanSilicon oxycarbideCobaltCapacitanceNanostructured materialGraphite[En] Cobalt-silicon oxycarbide materials (Co–SiOC) have been produced through the polymer-derived ceramic route by incorporating Cobalt acetate in different proportions. HF etching of the obtained materials leads to obtaining C-rich Co–SiOC materials where the constituent phases present different characteristics. The SiO units that were the most vulnerable to the chemical attack were the most tensioned ones which are connected at the edges of the graphitic planes. The carbonaceous nanostructures in the HF-etched materials present a different ordering degree which is related with the microstructural characteristics of the pyrolyzed precursors. In addition, the electrochemical performance turns out to be dependent not solely on the Co content but also to the graphitization degree of the carbonaceous phase.A. Tamayo acknowledges the financial support from Fundacion General CSIC and the program COMFUTURO. This research has been developed under the frame of the project MAT2016-78700-R from the Spanish Ministry of Economics and Competitiveness. We want to acknowledge Lucia Salvador for her inestimable assistance in the electrochemical measurements.Pergamon PressConsejo Superior de Investigaciones Científicas (España)Ministerio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120202021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/229244reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-78700-Rhttp://dx.doi.org/10.1016/j.ceramint.2019.12.197Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2292442026-05-22T06:33:51Z
dc.title.none.fl_str_mv Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
title Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
spellingShingle Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
Tamayo Hernando, Aitana
Silicon oxycarbide
Cobalt
Capacitance
Nanostructured material
Graphite
title_short Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
title_full Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
title_fullStr Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
title_full_unstemmed Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
title_sort Structural, textural and electrochemical relationships in HF etched cobalt-silicon micro/mesoporous oxycarbides
dc.creator.none.fl_str_mv Tamayo Hernando, Aitana
Rodríguez González, M. Ángeles
Colomer, María T.
Sánchez, Elizabeth
Mazo Fernández, María Alejandra
Rubio Alonso, Juan
author Tamayo Hernando, Aitana
author_facet Tamayo Hernando, Aitana
Rodríguez González, M. Ángeles
Colomer, María T.
Sánchez, Elizabeth
Mazo Fernández, María Alejandra
Rubio Alonso, Juan
author_role author
author2 Rodríguez González, M. Ángeles
Colomer, María T.
Sánchez, Elizabeth
Mazo Fernández, María Alejandra
Rubio Alonso, Juan
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Silicon oxycarbide
Cobalt
Capacitance
Nanostructured material
Graphite
topic Silicon oxycarbide
Cobalt
Capacitance
Nanostructured material
Graphite
description [En] Cobalt-silicon oxycarbide materials (Co–SiOC) have been produced through the polymer-derived ceramic route by incorporating Cobalt acetate in different proportions. HF etching of the obtained materials leads to obtaining C-rich Co–SiOC materials where the constituent phases present different characteristics. The SiO units that were the most vulnerable to the chemical attack were the most tensioned ones which are connected at the edges of the graphitic planes. The carbonaceous nanostructures in the HF-etched materials present a different ordering degree which is related with the microstructural characteristics of the pyrolyzed precursors. In addition, the electrochemical performance turns out to be dependent not solely on the Co content but also to the graphitization degree of the carbonaceous phase.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/229244
url http://hdl.handle.net/10261/229244
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2016-78700-R
http://dx.doi.org/10.1016/j.ceramint.2019.12.197
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Pergamon Press
publisher.none.fl_str_mv Pergamon Press
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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