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)<sub>2</sub>). The structure and morphology of the prepared materials were characterized by X-ray diffraction and transmission electron microscopy. The electrochemical per...

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Autores principales: Ortiz, Mariela, Real, Silvia Graciela, Castro, Élida Beatriz
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/133161
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-133161
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
spellingShingle Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
Ortiz, Mariela
Real, Silvia Graciela
Castro, Élida Beatriz
Electrochemical characterization of MWCNT Ni(OH)₂ composites as cathode materials
topic_facet Química
Electrochemical Characterization
Hydrothermal Synthesis
Mwcnt
Ni/Mh Batteries
Nickel Electrode
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.
format Articulo
Articulo
author Ortiz, Mariela
Real, Silvia Graciela
Castro, Élida Beatriz
author_facet Ortiz, Mariela
Real, Silvia Graciela
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
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/133161
work_keys_str_mv AT ortizmariela electrochemicalcharacterizationofmwcntnioh2compositesascathodematerials
AT realsilviagraciela electrochemicalcharacterizationofmwcntnioh2compositesascathodematerials
AT castroelidabeatriz electrochemicalcharacterizationofmwcntnioh2compositesascathodematerials
bdutipo_str Repositorios
_version_ 1764820454914129921

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