Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials

Autores
Ortiz, Mariela; Real, Silvia Graciela; Castro, Élida Beatriz
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The hydrothermal method was used to synthesize multi-walled carbon nanotube/nickel hydroxide composites (MWCNT/Ni(OH)2). The structure and morphology of the prepared materials were characterized by X-ray diffraction and transmission electron microscopy. The electrochemical performance of cathodes prepared with multi-walled carbon nanotubes (MWCNT) loaded into the β-nickel hydroxide materials was investigated employing cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopic measurements. It is shown that the cathode active material utilization increases for MWCNT/Ni(OH)2 obtained after 24 h of hydrothermal synthesis. These composites exhibit a fairly good electrochemical performance as cathode materials. Based on the results, this fact could be associated with the formation of a continuous conductive network structure in the hydroxide matrix. The analyses of impedance data, according to a physicochemical model, allow the improvement of a better understanding of the main structural and physicochemical parameters that control the electrochemical performance of these systems.
Facultad de Ciencias Exactas
Materia
Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/133161
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/133161
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materialsOrtiz, MarielaReal, Silvia GracielaCastro, Élida BeatrizQuímicaElectrochemical CharacterizationHydrothermal SynthesisMwcntNi/Mh BatteriesNickel ElectrodeThe hydrothermal method was used to synthesize multi-walled carbon nanotube/nickel hydroxide composites (MWCNT/Ni(OH)<sub>2</sub>). The structure and morphology of the prepared materials were characterized by X-ray diffraction and transmission electron microscopy. The electrochemical performance of cathodes prepared with multi-walled carbon nanotubes (MWCNT) loaded into the β-nickel hydroxide materials was investigated employing cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopic measurements. It is shown that the cathode active material utilization increases for MWCNT/Ni(OH)<sub>2</sub> obtained after 24 h of hydrothermal synthesis. These composites exhibit a fairly good electrochemical performance as cathode materials. Based on the results, this fact could be associated with the formation of a continuous conductive network structure in the hydroxide matrix. The analyses of impedance data, according to a physicochemical model, allow the improvement of a better understanding of the main structural and physicochemical parameters that control the electrochemical performance of these systems.Facultad de Ciencias Exactas2015-09-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1029-1036http://sedici.unlp.edu.ar/handle/10915/133161enginfo:eu-repo/semantics/altIdentifier/issn/1432-8488info:eu-repo/semantics/altIdentifier/issn/1433-0768info:eu-repo/semantics/altIdentifier/doi/10.1007/s10008-015-3023-4info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:23:37Zoai:sedici.unlp.edu.ar:10915/133161Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:23:38.009SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
title Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
spellingShingle Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
Ortiz, Mariela
Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
title_short Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
title_full Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
title_fullStr Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
title_full_unstemmed Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
title_sort Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
dc.creator.none.fl_str_mv Ortiz, Mariela
Real, Silvia Graciela
Castro, Élida Beatriz
author Ortiz, Mariela
author_facet Ortiz, Mariela
Real, Silvia Graciela
Castro, Élida Beatriz
author_role author
author2 Real, Silvia Graciela
Castro, Élida Beatriz
author2_role author
author
dc.subject.none.fl_str_mv Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
topic Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
dc.description.none.fl_txt_mv The hydrothermal method was used to synthesize multi-walled carbon nanotube/nickel hydroxide composites (MWCNT/Ni(OH)<sub>2</sub>). The structure and morphology of the prepared materials were characterized by X-ray diffraction and transmission electron microscopy. The electrochemical performance of cathodes prepared with multi-walled carbon nanotubes (MWCNT) loaded into the β-nickel hydroxide materials was investigated employing cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopic measurements. It is shown that the cathode active material utilization increases for MWCNT/Ni(OH)<sub>2</sub> obtained after 24 h of hydrothermal synthesis. These composites exhibit a fairly good electrochemical performance as cathode materials. Based on the results, this fact could be associated with the formation of a continuous conductive network structure in the hydroxide matrix. The analyses of impedance data, according to a physicochemical model, allow the improvement of a better understanding of the main structural and physicochemical parameters that control the electrochemical performance of these systems.
Facultad de Ciencias Exactas
description The hydrothermal method was used to synthesize multi-walled carbon nanotube/nickel hydroxide composites (MWCNT/Ni(OH)<sub>2</sub>). The structure and morphology of the prepared materials were characterized by X-ray diffraction and transmission electron microscopy. The electrochemical performance of cathodes prepared with multi-walled carbon nanotubes (MWCNT) loaded into the β-nickel hydroxide materials was investigated employing cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopic measurements. It is shown that the cathode active material utilization increases for MWCNT/Ni(OH)<sub>2</sub> obtained after 24 h of hydrothermal synthesis. These composites exhibit a fairly good electrochemical performance as cathode materials. Based on the results, this fact could be associated with the formation of a continuous conductive network structure in the hydroxide matrix. The analyses of impedance data, according to a physicochemical model, allow the improvement of a better understanding of the main structural and physicochemical parameters that control the electrochemical performance of these systems.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/133161
url http://sedici.unlp.edu.ar/handle/10915/133161
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1432-8488
info:eu-repo/semantics/altIdentifier/issn/1433-0768
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10008-015-3023-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
1029-1036
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.22299

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