Double Layer at the Pt(111)–Aqueous Electrolyte Interface: Potential of Zero Charge and Anomalous Gouy–Chapman Screening

Double Layer at the Pt(111)–Aqueous Electrolyte Interface: Potential of Zero Charge and Anomalous Gouy–Chapman Screening

We report, for the first time, the observation of a Gouy–Chapman capacitance minimum at the potential of zero charge of the Pt(111)‐aqueous perchlorate electrolyte interface. The potential of zero charge of 0.3 V vs. NHE agrees very well with earlier values obtained by different methods. The observa...

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Veröffentlicht in:Angewandte Chemie 2020-01, Vol.132 (2), p.721-725
Hauptverfasser: Ojha, Kasinath, Arulmozhi, Nakkiran, Aranzales, Diana, Koper, Marc T. M.
Format: Artikel
Sprache:eng
Schlagworte:
Aqueous electrolytes
Capacitance
Chemistry
Doppelschichtkapazität
Electric double layer
Electrolytes
Electrostatic properties
Gouy-Chapman-Kapazität
Mercury
Mercury (metal)
Metall-Elektrolyt-Grenzflächen
Nullladungspotential
Perchlorate
Perchloric acid
pH effects
Platin
Screening
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Zusammenfassung:We report, for the first time, the observation of a Gouy–Chapman capacitance minimum at the potential of zero charge of the Pt(111)‐aqueous perchlorate electrolyte interface. The potential of zero charge of 0.3 V vs. NHE agrees very well with earlier values obtained by different methods. The observation of the potential of zero charge of this interface requires a specific pH (pH 4) and anomalously low electrolyte concentrations (
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201911929