A rotating rod electrode disk as an alternative to the rotating disk electrode for medium-temperature electrolytes, Part I: The effect of the absence of cylindrical insulation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913670" target="_blank" >RIV/60461373:22310/17:43913670 - isvavai.cz</a>

Result on the web

<a href="https://ac.els-cdn.com/S0013468617311209/1-s2.0-S0013468617311209-main.pdf?_tid=082886ea-04f2-11e8-a362-00000aacb35f&acdnat=1517230000_c0882fc021f64a22cd0f095fe0f4266c" target="_blank" >https://ac.els-cdn.com/S0013468617311209/1-s2.0-S0013468617311209-main.pdf?_tid=082886ea-04f2-11e8-a362-00000aacb35f&acdnat=1517230000_c0882fc021f64a22cd0f095fe0f4266c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2017.05.123" target="_blank" >10.1016/j.electacta.2017.05.123</a>

Result language

angličtina

Original language name

A rotating rod electrode disk as an alternative to the rotating disk electrode for medium-temperature electrolytes, Part I: The effect of the absence of cylindrical insulation

Original language description

In this paper, a rotating rod electrode disk is introduced as a hydrodynamic electrode and both the electrolyte flow hydrodynamics as well as mass transport towards the disk were investigated and compared with the rotating disk electrode. The main difference to the rotating disk is the absence of disk insulation leading to slightly enhanced mass transport towards the disk surface. Based on a combination of experiments and mathematical modelling for a broad range of kinematic viscosity values of the electrolyte solution, a correction of the Levich equation was introduced. This enables recalculation of the data determined using the rotating rod disk electrode so that they are equivalent to those of the rotating disk electrode. Although glassy carbon was used as the material of the rotating rod electrode in this work, in principle any other suitable material can be used. Thus, it can be concluded that the rotating rod electrode disk represents a cheap and effective tool easily applicable for measurements with controlled electrolyte convection in systems that are hardly manageable using a conventionally constructed rotating disk electrode. Good examples are melts or electrolyte solutions at temperatures above 80 degrees C. The applicability of the rotating rod electrode disk was successfully tested in the continuation (Part II) of this study. There, the thin-film modified (activated) rotating rod electrode disk was used for determining the mass transport properties of the oxygen and kinetic constants of the oxygen reduction reaction in concentrated phosphoric acid at 160 degrees C.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/GC15-02407J" target="_blank" >GC15-02407J: Novel proton exchange membrane water electrolysis for efficient energy conversion</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Electrochimica Acta

ISSN

0013-4686

e-ISSN

—

Volume of the periodical

245

Issue of the periodical within the volume

August 2017

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

634-642

UT code for WoS article

000406762700071

EID of the result in the Scopus database

2-s2.0-85020308178