Poisoning and activation of the gold cathode during electroreduction of CO[sub 2]

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2054936· OSTI ID:7107318

Kedzierzawski, P; Augustynski, J ^[1]

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1. Univ. de Geneve (Switzerland). Dept. de Chimie Minerale

Carbon dioxide reduction at polycrystalline gold cathode in 0.1M NaHCO[sub 3] solution has been re-examined. Like two other group Ib metal cathodes, Ag and Cu, the Au electrode is shown to undergo progressive deactivation during the CO[sub 2] electrolysis runs. A periodic, electrochemical activation treatment of the gold electrode is described. This is the first of a series of papers regarding activation of group Ib metal cathodes toward reduction of CO[sub 2]. It is worth mentioning here, that, except for the work by DeWulf et al., the problem of electrode poisoning during CO[sub 2] reduction has been systematically omitted in the literature.

• OSTI ID: 7107318
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 141:5; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL ACTIVATION
COPPER
DEACTIVATION
ELECTRODES
ELECTROLYSIS
ELEMENTS
GOLD
LYSIS
METALS
OXIDES
OXYGEN COMPOUNDS
SILVER
TRANSITION ELEMENTS