Characterization of the surface films formed on Nb during electrodissolution in acqueous alkali (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Characterization of the surface films formed on Nb during electrodissolution in acqueous alkali (Articolo in rivista) (literal)

Anno

• 2002-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/S0013-4686(02)00202-5 (literal)

Alternative label

• Baruffaldi C.; Casellato U. ; Cattarin S. ; Musiani M. ; Tribollet B. ; Vercelli B. (2002)
  Characterization of the surface films formed on Nb during electrodissolution in acqueous alkali
  in Electrochimica acta
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Baruffaldi C.; Casellato U. ; Cattarin S. ; Musiani M. ; Tribollet B. ; Vercelli B. (literal)

Pagina inizio

• 2989 (literal)

Pagina fine

• 2997 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.sciencedirect.com/science/article/pii/S0013468602002025 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 47 (literal)

Rivista

• Electrochimica acta (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 9 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1,3,4,6 : IENI-CNR, Corso Stati Uniti 4, 35127 Padova, Italy 2 : ICIS-CNR, Corso Stati Uniti 4, 35127 Padova, Italy 5 : CNRS-UPR15, 'Physique des Liquides et Electrochimie', Universite´ P. et M. Curie, CP 133, 4 Place Jussieu, 75252 Paris Cedex 05, France (literal)

Titolo

• Characterization of the surface films formed on Nb during electrodissolution in acqueous alkali (literal)

Abstract

• Anodic polarisation of Nb in warm and concentrated aqueous alkali results in sustained electrodissolution. The process is investigated in NaOH by voltammetric, steady-state and impedance techniques. The j-E steady-state curve is characterised by a current peak and a subsequent plateau extending up to the explored positive limit (8 VSCE). Upon addition of tartrate to the electrolyte the dissolution current increases markedly. In some NaOH+Na tartrate electrolytes a dissolution-precipitation mechanism sets in, with formation of a surface layer which causes a gradual current decrease; this layer is identified by XRD and elemental analysis as a mixed Na and Nb oxide hydrate. Larger currents may be sustained in KOH+K tartrate solutions without any precipitation process. Impedance diagrams recorded in the plateau region are analysed on the basis of the equivalent circuit resulting from the surface charge model; the oxide formation ratio and the main model parameters are estimated and their temperature dependence is discussed. (literal)

Prodotto di

• Istituto di chimica inorganica e delle superfici (ICIS) (Istituto)
• Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE) (Istituto)

Autore CNR

• BARBARA VERCELLI (Unità di personale interno)
• MARCO MUSIANI (Persona)
• SANDRO CATTARIN (Unità di personale interno)
• UMBERTO CASELLATO (Persona)

Insieme di parole chiave

• Keywords of "Characterization of the surface films formed on Nb during electrodissolution in acqueous alkali" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di chimica inorganica e delle superfici (ICIS) (Istituto)
• Institute of Condensed Matter Chemistry and Energy Technologies (ICMATE) (Istituto)

Autore CNR di

• MARCO MUSIANI (Persona)
• BARBARA VERCELLI (Unità di personale interno)
• UMBERTO CASELLATO (Persona)
• SANDRO CATTARIN (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Electrochimica acta (Rivista)

Insieme di parole chiave di

• Keywords of "Characterization of the surface films formed on Nb during electrodissolution in acqueous alkali" (Insieme di parole chiave)