S- and N-Doped Graphene-based Catalysts for the Oxygen Evolution Reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00523369" target="_blank" >RIV/61388955:_____/20:00523369 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0307728" target="_blank" >http://hdl.handle.net/11104/0307728</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2020.135975" target="_blank" >10.1016/j.electacta.2020.135975</a>

Jazyk výsledku

angličtina

Název v původním jazyce

S- and N-Doped Graphene-based Catalysts for the Oxygen Evolution Reaction

Popis výsledku v původním jazyce

In-situ Raman spectroscopy, rotating ring-disk electrode (RRDE), cyclic voltammetry (CV) and linear sweep voltammetry (LSV) techniques were used to determine the catalytic activity of graphite and heteroatom-doped graphene catalysts toward the oxygen evolution reaction (OER) in alkaline media. Main results indicate that the OER is strongly influenced by the nature and amount of the doping agent in addition to the interaction with the electrolyte media, which also conditioned the AreaD/AreaG (AD/AG) ratio and the position of the D- and G-bands. Additionally, an exhaustive Raman characterization of powder materials and catalyst inks in the presence of air, water and sodium hydroxide is reported. Finally, the percentage of molecular oxygen production is estimated by a novel procedure. This work is not intended to reveal the best catalysts toward the OER, but to show novel techniques to study the OER at graphene-based catalysts.n

Název v anglickém jazyce

S- and N-Doped Graphene-based Catalysts for the Oxygen Evolution Reaction

Popis výsledku anglicky

In-situ Raman spectroscopy, rotating ring-disk electrode (RRDE), cyclic voltammetry (CV) and linear sweep voltammetry (LSV) techniques were used to determine the catalytic activity of graphite and heteroatom-doped graphene catalysts toward the oxygen evolution reaction (OER) in alkaline media. Main results indicate that the OER is strongly influenced by the nature and amount of the doping agent in addition to the interaction with the electrolyte media, which also conditioned the AreaD/AreaG (AD/AG) ratio and the position of the D- and G-bands. Additionally, an exhaustive Raman characterization of powder materials and catalyst inks in the presence of air, water and sodium hydroxide is reported. Finally, the percentage of molecular oxygen production is estimated by a novel procedure. This work is not intended to reveal the best catalysts toward the OER, but to show novel techniques to study the OER at graphene-based catalysts.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

340

Číslo periodika v rámci svazku

FEB 2020

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

135975

Kód UT WoS článku

000521531800038

EID výsledku v databázi Scopus

2-s2.0-85082020028