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

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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 p...

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Autores principales: Ortiz, Mariela, Real, Silvia, Castro, Élida Beatriz
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Springer 2017
Materias:
Nickel electrode; MWCNT; NiMH batteries; hydrothermal synthesis; electrochemical characterization
Acceso en línea:http://hdl.handle.net/20.500.12272/2479
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-2479
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic Nickel electrode; MWCNT; NiMH batteries; hydrothermal synthesis; electrochemical characterization
spellingShingle Nickel electrode; MWCNT; NiMH batteries; hydrothermal synthesis; electrochemical characterization
Ortiz, Mariela
Real, Silvia
Castro, Élida Beatriz
Electrochemical characterization of MWCNT Ni(OH)2 composites as cathode materials
topic_facet Nickel electrode; MWCNT; NiMH batteries; hydrothermal synthesis; electrochemical characterization
description 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.
format Artículo
publishedVersion
Artículo
author Ortiz, Mariela
Real, Silvia
Castro, Élida Beatriz
author_facet Ortiz, Mariela
Real, Silvia
Castro, Élida Beatriz
author_sort Ortiz, Mariela
title Electrochemical characterization of MWCNT Ni(OH)2 composites as cathode materials
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
publisher Springer
publishDate 2017
url http://hdl.handle.net/20.500.12272/2479
work_keys_str_mv AT ortizmariela electrochemicalcharacterizationofmwcntnioh2compositesascathodematerials
AT realsilvia electrochemicalcharacterizationofmwcntnioh2compositesascathodematerials
AT castroelidabeatriz electrochemicalcharacterizationofmwcntnioh2compositesascathodematerials
bdutipo_str Repositorios
_version_ 1764820552305868803

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