Degradation kinetics of Pt during high-temperature PEM fuel cell operation Part III: Voltage-dependent Pt degradation rate in single-cell experiments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920521" target="_blank" >RIV/60461373:22310/20:43920521 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23640/20:43960942

Výsledek na webu

<a href="https://doi.org/10.1016/j.electacta.2020.137165" target="_blank" >https://doi.org/10.1016/j.electacta.2020.137165</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2020.137165" target="_blank" >10.1016/j.electacta.2020.137165</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Degradation kinetics of Pt during high-temperature PEM fuel cell operation Part III: Voltage-dependent Pt degradation rate in single-cell experiments

Popis výsledku v původním jazyce

Degradation of the Pt catalyst is one of the most serious problems related to the high-temperature fuel cell with a proton-exchange membrane (HT PEM FC). Despite many publications on this topic, no clear relationship between Pt nanoparticle growth and HT PEM FC operating conditions has been formulated yet. The goal of the presented study is to determine the dependence of Pt nanoparticle growth on the operational voltage of the HT PEM FC by means of experimental single-cell testing with subsequent post mortem analysis of the catalyst layers on the two electrodes. Well-defined, long-term tests performed at constant voltage in combination with several post mortem instrumental methods enabled the prediction of the development of Pt nanoparticle distribution. At higher voltages, Pt nanoparticle growth was less pronounced than at low voltages. This was likely caused by the change in the rate-limiting step in Pt nanoparticle growth. (C) 2020 Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

Degradation kinetics of Pt during high-temperature PEM fuel cell operation Part III: Voltage-dependent Pt degradation rate in single-cell experiments

Popis výsledku anglicky

Degradation of the Pt catalyst is one of the most serious problems related to the high-temperature fuel cell with a proton-exchange membrane (HT PEM FC). Despite many publications on this topic, no clear relationship between Pt nanoparticle growth and HT PEM FC operating conditions has been formulated yet. The goal of the presented study is to determine the dependence of Pt nanoparticle growth on the operational voltage of the HT PEM FC by means of experimental single-cell testing with subsequent post mortem analysis of the catalyst layers on the two electrodes. Well-defined, long-term tests performed at constant voltage in combination with several post mortem instrumental methods enabled the prediction of the development of Pt nanoparticle distribution. At higher voltages, Pt nanoparticle growth was less pronounced than at low voltages. This was likely caused by the change in the rate-limiting step in Pt nanoparticle growth. (C) 2020 Elsevier Ltd. All rights reserved.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

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

363

Číslo periodika v rámci svazku

december

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000588282800009

EID výsledku v databázi Scopus

2-s2.0-85092245614