On the influence of hydronium and hydroxide ion diffusion on the hydrogen and oxygen evolution reactions in aqueous media

Gustav Karl Henrik Wiberg; Matthias Arenz

doi:10.1016/j.electacta.2015.01.098

On the influence of hydronium and hydroxide ion diffusion on the hydrogen and oxygen evolution reactions in aqueous media

Gustav Karl Henrik Wiberg^*, Matthias Arenz

^*Corresponding author af dette arbejde

Kemisk Institut

9 Citationer (Scopus)

Abstract

We present a study concerning the influence of the diffusion of H⁺ and OH^- ions on the hydrogen and oxygen evolution reactions (HER and OER) in aqueous electrolyte solutions. Using a rotating disk electrode (RDE), it is shown that at certain conditions the observed current, i.e., the reaction rate, does not depend on the kinetics but on diffusion properties; In fact we demonstrate how studying these reactions in 0.1 M non-buffered aqueous electrolytes with pH-values ranging between pH 1 to pH 13, the diffusion coefficients of H⁺ and OH^- ions can be determined. Within the experimental error limits, we found no pH dependency on the diffusion coefficients for any of the investigated ions.

Originalsprog	Engelsk
Tidsskrift	Electrochimica Acta
Vol/bind	159
Sider (fra-til)	66-70
Antal sider	5
ISSN	0013-4686
DOI	https://doi.org/10.1016/j.electacta.2015.01.098
Status	Udgivet - 2015

Adgang til dokumentet

10.1016/j.electacta.2015.01.098

Citationsformater

@article{ee8f00905cfa412fb4254d810ced907a,

title = "On the influence of hydronium and hydroxide ion diffusion on the hydrogen and oxygen evolution reactions in aqueous media",

abstract = "We present a study concerning the influence of the diffusion of H+ and OH- ions on the hydrogen and oxygen evolution reactions (HER and OER) in aqueous electrolyte solutions. Using a rotating disk electrode (RDE), it is shown that at certain conditions the observed current, i.e., the reaction rate, does not depend on the kinetics but on diffusion properties; In fact we demonstrate how studying these reactions in 0.1 M non-buffered aqueous electrolytes with pH-values ranging between pH 1 to pH 13, the diffusion coefficients of H+ and OH- ions can be determined. Within the experimental error limits, we found no pH dependency on the diffusion coefficients for any of the investigated ions.",

keywords = "Hydrogen evolution reaction, Hydronium, Hydroxide, Oxygen evolution reaction, Pt",

author = "Wiberg, {Gustav Karl Henrik} and Matthias Arenz",

year = "2015",

doi = "10.1016/j.electacta.2015.01.098",

language = "English",

volume = "159",

pages = "66--70",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Pergamon Press",

}

TY - JOUR

T1 - On the influence of hydronium and hydroxide ion diffusion on the hydrogen and oxygen evolution reactions in aqueous media

AU - Wiberg, Gustav Karl Henrik

AU - Arenz, Matthias

PY - 2015

Y1 - 2015

N2 - We present a study concerning the influence of the diffusion of H+ and OH- ions on the hydrogen and oxygen evolution reactions (HER and OER) in aqueous electrolyte solutions. Using a rotating disk electrode (RDE), it is shown that at certain conditions the observed current, i.e., the reaction rate, does not depend on the kinetics but on diffusion properties; In fact we demonstrate how studying these reactions in 0.1 M non-buffered aqueous electrolytes with pH-values ranging between pH 1 to pH 13, the diffusion coefficients of H+ and OH- ions can be determined. Within the experimental error limits, we found no pH dependency on the diffusion coefficients for any of the investigated ions.

AB - We present a study concerning the influence of the diffusion of H+ and OH- ions on the hydrogen and oxygen evolution reactions (HER and OER) in aqueous electrolyte solutions. Using a rotating disk electrode (RDE), it is shown that at certain conditions the observed current, i.e., the reaction rate, does not depend on the kinetics but on diffusion properties; In fact we demonstrate how studying these reactions in 0.1 M non-buffered aqueous electrolytes with pH-values ranging between pH 1 to pH 13, the diffusion coefficients of H+ and OH- ions can be determined. Within the experimental error limits, we found no pH dependency on the diffusion coefficients for any of the investigated ions.

KW - Hydrogen evolution reaction

KW - Hydronium

KW - Hydroxide

KW - Oxygen evolution reaction

KW - Pt

U2 - 10.1016/j.electacta.2015.01.098

DO - 10.1016/j.electacta.2015.01.098

M3 - Journal article

AN - SCOPUS:84922346950

SN - 0013-4686

VL - 159

SP - 66

EP - 70

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

On the influence of hydronium and hydroxide ion diffusion on the hydrogen and oxygen evolution reactions in aqueous media

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater