Electrochemical deposition and properties of PbO2 + Co3O4 composites (Articolo in rivista)

Type
Label
  • Electrochemical deposition and properties of PbO2 + Co3O4 composites (Articolo in rivista) (literal)
Anno
  • 1997-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/S002207289700107-1 (literal)
Alternative label
  • Musiani M.; Furlanetto F.; Guerriero P. (1997)
    Electrochemical deposition and properties of PbO2 + Co3O4 composites
    in Journal of electroanalytical chemistry (1992); Elsevier Sequoia, Lausanne (Svizzera)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Musiani M.; Furlanetto F.; Guerriero P. (literal)
Pagina inizio
  • 131 (literal)
Pagina fine
  • 138 (literal)
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  • 440 (literal)
Rivista
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  • 8 (literal)
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  • 1-2 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • 1,2 :IPELP CNR, Corso Stati Uniti 4, 35127 Padova, Italy / 3 :ICTIMA CNR, Corso Stati Uniti 4, 35127 Padova, Italy (literal)
Titolo
  • Electrochemical deposition and properties of PbO2 + Co3O4 composites (literal)
Abstract
  • Electrolysis of suspensions of Co3O4 particles in Pb2+-containing electrolytes has been used for depositing PbO2 + Co3O4 composite layers on Ni rotating disc anodes. A sufficiently high angular speed of the electrode is necessary to obtain layers of homogeneous thickness and Co3O4 concentration. The volume fraction of Co3O4 particles in the deposit ? reaches a limiting value of ca. 0.1 when the volume fraction of particles in suspension C exceeds 0.008. The current density j has little effect on ? as long as it is in the range 1 to 20 mA cm-2; if j increases further, ? decreases. PbO2 + Co3O4 composite layers have been studied as electrode materials for the oxygen evolution reaction (mainly in NaOH solution). The overpotential and Tafel slope decrease upon increasing ?. At a fixed potential, j is roughly proportional to OH- concentration. The PbO2 + Co3O4 electrode performance is fairly stable at 25°C but declines with time at higher temperature. © 1997 Elsevier Science S.A. (literal)
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