Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte

Detalhes bibliográficos
Autor(a) principal: Nascimento,Ana P.
Data de Publicação: 2014
Outros Autores: Linares,José J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300014
Resumo: This paper studies the influence of the operating variables (glycerol concentration, temperature and feed rate) for a direct glycerol fuel cell fed with glycerol using polybenzimidazole (PBI) impregnated with KOH as electrolyte and Pt/C as catalyst. Temperature displays a beneficial effect up to 75 ºC due to the enhanced conductivity and kinetics of the electrochemical reactions. The optimum cell feed corresponds to 1 mol L-1 glycerol and 4 mol L-1 KOH, supplying sufficient quantities of fuel and electrolyte without massive crossover nor mass transfer limitations. The feed rate increases the performance up to a limit of 2 mL min-1, high enough to guarantee the access of the glycerol and the exit of the products. Finally, the use of binary catalysts (PtRu/C and Pt3Sn/C) is beneficial for increasing the cell performance.
id SBQ-2_770ca09a4981879870c5572316ff7267
oai_identifier_str oai:scielo:S0103-50532014000300014
network_acronym_str SBQ-2
network_name_str Journal of the Brazilian Chemical Society (Online)
repository_id_str
spelling Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyteThis paper studies the influence of the operating variables (glycerol concentration, temperature and feed rate) for a direct glycerol fuel cell fed with glycerol using polybenzimidazole (PBI) impregnated with KOH as electrolyte and Pt/C as catalyst. Temperature displays a beneficial effect up to 75 ºC due to the enhanced conductivity and kinetics of the electrochemical reactions. The optimum cell feed corresponds to 1 mol L-1 glycerol and 4 mol L-1 KOH, supplying sufficient quantities of fuel and electrolyte without massive crossover nor mass transfer limitations. The feed rate increases the performance up to a limit of 2 mL min-1, high enough to guarantee the access of the glycerol and the exit of the products. Finally, the use of binary catalysts (PtRu/C and Pt3Sn/C) is beneficial for increasing the cell performance.Sociedade Brasileira de Química2014-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300014Journal of the Brazilian Chemical Society v.25 n.3 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140018info:eu-repo/semantics/openAccessNascimento,Ana P.Linares,José J.eng2014-03-19T00:00:00Zoai:scielo:S0103-50532014000300014Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-03-19T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
title Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
spellingShingle Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
Nascimento,Ana P.
title_short Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
title_full Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
title_fullStr Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
title_full_unstemmed Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
title_sort Performance of a direct glycerol fuel cell using KOH doped polybenzimidazole as electrolyte
author Nascimento,Ana P.
author_facet Nascimento,Ana P.
Linares,José J.
author_role author
author2 Linares,José J.
author2_role author
dc.contributor.author.fl_str_mv Nascimento,Ana P.
Linares,José J.
description This paper studies the influence of the operating variables (glycerol concentration, temperature and feed rate) for a direct glycerol fuel cell fed with glycerol using polybenzimidazole (PBI) impregnated with KOH as electrolyte and Pt/C as catalyst. Temperature displays a beneficial effect up to 75 ºC due to the enhanced conductivity and kinetics of the electrochemical reactions. The optimum cell feed corresponds to 1 mol L-1 glycerol and 4 mol L-1 KOH, supplying sufficient quantities of fuel and electrolyte without massive crossover nor mass transfer limitations. The feed rate increases the performance up to a limit of 2 mL min-1, high enough to guarantee the access of the glycerol and the exit of the products. Finally, the use of binary catalysts (PtRu/C and Pt3Sn/C) is beneficial for increasing the cell performance.
publishDate 2014
dc.date.none.fl_str_mv 2014-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20140018
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.25 n.3 2014
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
_version_ 1750318175751241728

Registros relacionados