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 for this work

Department of Chemistry

9 Citations (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.

Original language	English
Journal	Electrochimica Acta
Volume	159
Pages (from-to)	66-70
Number of pages	5
ISSN	0013-4686
DOIs	https://doi.org/10.1016/j.electacta.2015.01.098
Publication status	Published - 2015

Keywords

Hydrogen evolution reaction
Hydronium
Hydroxide
Oxygen evolution reaction
Pt

Access to Document

10.1016/j.electacta.2015.01.098

Cite this

@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

Keywords

Access to Document

Fingerprint

Cite this