A rotating rod electrode disk as an alternative to the rotating disk electrode for medium-temperature electrolytes, Part II: An example of the application in an investigation of the oxygen reduction reaction on a Pt/C catalyst by the thin film method in hot concentrated H3PO4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913671" target="_blank" >RIV/60461373:22310/17:43913671 - isvavai.cz</a>

Výsledek na webu

<a href="https://ac.els-cdn.com/S0013468617311349/1-s2.0-S0013468617311349-main.pdf?_tid=410972a8-04f2-11e8-ab0a-00000aab0f26&acdnat=1517230096_c5f70e19c9c5e27543fedbd4944cba7e" target="_blank" >https://ac.els-cdn.com/S0013468617311349/1-s2.0-S0013468617311349-main.pdf?_tid=410972a8-04f2-11e8-ab0a-00000aab0f26&acdnat=1517230096_c5f70e19c9c5e27543fedbd4944cba7e</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2017.05.143" target="_blank" >10.1016/j.electacta.2017.05.143</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A rotating rod electrode disk as an alternative to the rotating disk electrode for medium-temperature electrolytes, Part II: An example of the application in an investigation of the oxygen reduction reaction on a Pt/C catalyst by the thin film method in hot concentrated H3PO4

Popis výsledku v původním jazyce

In this paper a novel and simple method to determine the O-2 reduction reaction activity of Pt/C in 99% H3PO4 at a temperature of 160 degrees C using a well-established thin film procedure is reported. It utilizes a disk of rotating rod made of glassy carbon as a working hydrodynamic electrode. By introducing polybenzimidazole as a thin film polymer binder, a modified rotating rod electrode disk (the cylindrical part is electrochemically inactive under the conditions used) suitable for measurements in hot concentrated H3PO4 was obtained. Using this electrode together with the Koutecky-Levich equation modified for rotating rod electrode hydrodynamics, the kinetics of the oxygen reduction reaction and mass transfer parameters of O-2 in 99% H3PO4 at 160 degrees C were successfully determined. The presented method can be easily used to determine the activity of various catalysts under conditions which preclude the use of a conventional rotating disk electrode.

Název v anglickém jazyce

A rotating rod electrode disk as an alternative to the rotating disk electrode for medium-temperature electrolytes, Part II: An example of the application in an investigation of the oxygen reduction reaction on a Pt/C catalyst by the thin film method in hot concentrated H3PO4

Popis výsledku anglicky

In this paper a novel and simple method to determine the O-2 reduction reaction activity of Pt/C in 99% H3PO4 at a temperature of 160 degrees C using a well-established thin film procedure is reported. It utilizes a disk of rotating rod made of glassy carbon as a working hydrodynamic electrode. By introducing polybenzimidazole as a thin film polymer binder, a modified rotating rod electrode disk (the cylindrical part is electrochemically inactive under the conditions used) suitable for measurements in hot concentrated H3PO4 was obtained. Using this electrode together with the Koutecky-Levich equation modified for rotating rod electrode hydrodynamics, the kinetics of the oxygen reduction reaction and mass transfer parameters of O-2 in 99% H3PO4 at 160 degrees C were successfully determined. The presented method can be easily used to determine the activity of various catalysts under conditions which preclude the use of a conventional rotating disk electrode.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/7HX13002" target="_blank" >7HX13002: Understanding the Degradation Mechanisms of a High Temperature PEMFC Stack and Optimization of the Individual Components</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Electrochimica Acta

ISSN

0013-4686

e-ISSN

—

Svazek periodika

245

Číslo periodika v rámci svazku

August 2017

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

597-606

Kód UT WoS článku

000406762700067

EID výsledku v databázi Scopus

2-s2.0-85020285877