Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , , |
Tipo de documento: | Relatório |
Idioma: | eng |
Título da fonte: | Eclética Química |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200003 |
Resumo: | This work describes the development of an alternative acetate bath for the electrochemical codeposition of Ni-Cu-Fe electrodes at low pH that is stable for several weeks and produces electrodes with good performance for chlor-alkali electrolysis. Physical characterization of the electrode surface was made using X ray absorption spectroscopy (XAS), scanning electron microscopy (SEM) and energy dispersive analysis (EDX). The evaluation of the material as electrocatalyst for the hydrogen evolution reaction (her) was carried out in brine solution (160 g L-1 NaCl + 150 g L-1 NaOH) at different temperatures through steady-state polarization curves. The Ni-Cu-Fe electrodes obtained with this bath have shown low overpotentials for the her, around 0.150 V at 353 K, and good stability under continuous long-term operation for 260 hours. One positive aspect of this cathode is that the polarization behavior of the material shows only one Tafel slope over the temperature range of 298 - 353 K. |
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Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodeshydrogen productioncathodeselectrolysischlor-alkaliThis work describes the development of an alternative acetate bath for the electrochemical codeposition of Ni-Cu-Fe electrodes at low pH that is stable for several weeks and produces electrodes with good performance for chlor-alkali electrolysis. Physical characterization of the electrode surface was made using X ray absorption spectroscopy (XAS), scanning electron microscopy (SEM) and energy dispersive analysis (EDX). The evaluation of the material as electrocatalyst for the hydrogen evolution reaction (her) was carried out in brine solution (160 g L-1 NaCl + 150 g L-1 NaOH) at different temperatures through steady-state polarization curves. The Ni-Cu-Fe electrodes obtained with this bath have shown low overpotentials for the her, around 0.150 V at 353 K, and good stability under continuous long-term operation for 260 hours. One positive aspect of this cathode is that the polarization behavior of the material shows only one Tafel slope over the temperature range of 298 - 353 K.Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP2003-01-01info:eu-repo/semantics/reportinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200003Eclética Química v.28 n.2 2003reponame:Eclética Químicainstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESP10.1590/S0100-46702003000200003info:eu-repo/semantics/openAccessGiz,M. J.Marengo,M. C.Ticianelli,E. A.Gonzalez,E. R.eng2004-04-02T00:00:00Zoai:scielo:S0100-46702003000200003Revistahttp://revista.iq.unesp.br/ojs/index.php/ecletica/PUBhttps://revista.iq.unesp.br/ojs/index.php/ecletica/oaiecletica@ctrlk.com.br||ecletica@iq.unesp.br1678-46181678-4618opendoar:2004-04-02T00:00Eclética Química - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)false |
dc.title.none.fl_str_mv |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
title |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
spellingShingle |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes Giz,M. J. hydrogen production cathodes electrolysis chlor-alkali |
title_short |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
title_full |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
title_fullStr |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
title_full_unstemmed |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
title_sort |
Electrochemical and physical characterization of Ni-Cu-Fe alloy for chlor-alkali hydrogen cathodes |
author |
Giz,M. J. |
author_facet |
Giz,M. J. Marengo,M. C. Ticianelli,E. A. Gonzalez,E. R. |
author_role |
author |
author2 |
Marengo,M. C. Ticianelli,E. A. Gonzalez,E. R. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Giz,M. J. Marengo,M. C. Ticianelli,E. A. Gonzalez,E. R. |
dc.subject.por.fl_str_mv |
hydrogen production cathodes electrolysis chlor-alkali |
topic |
hydrogen production cathodes electrolysis chlor-alkali |
description |
This work describes the development of an alternative acetate bath for the electrochemical codeposition of Ni-Cu-Fe electrodes at low pH that is stable for several weeks and produces electrodes with good performance for chlor-alkali electrolysis. Physical characterization of the electrode surface was made using X ray absorption spectroscopy (XAS), scanning electron microscopy (SEM) and energy dispersive analysis (EDX). The evaluation of the material as electrocatalyst for the hydrogen evolution reaction (her) was carried out in brine solution (160 g L-1 NaCl + 150 g L-1 NaOH) at different temperatures through steady-state polarization curves. The Ni-Cu-Fe electrodes obtained with this bath have shown low overpotentials for the her, around 0.150 V at 353 K, and good stability under continuous long-term operation for 260 hours. One positive aspect of this cathode is that the polarization behavior of the material shows only one Tafel slope over the temperature range of 298 - 353 K. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/report |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
report |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702003000200003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-46702003000200003 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
publisher.none.fl_str_mv |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
dc.source.none.fl_str_mv |
Eclética Química v.28 n.2 2003 reponame:Eclética Química instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Eclética Química |
collection |
Eclética Química |
repository.name.fl_str_mv |
Eclética Química - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
repository.mail.fl_str_mv |
ecletica@ctrlk.com.br||ecletica@iq.unesp.br |
_version_ |
1754734617641877504 |