Glassy carbon electrode activation – A way towards highly active, reproducible and stable electrode surface

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918516" target="_blank" >RIV/60461373:22310/19:43918516 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/19:10405510

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0013468619300799?token=C3D4DD9A5AB1461FA4604A736B381D198AE6B1149D664204BD1DF9EAA654C75F3D8BE94E9B51A0C8C91D743A98A13147" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0013468619300799?token=C3D4DD9A5AB1461FA4604A736B381D198AE6B1149D664204BD1DF9EAA654C75F3D8BE94E9B51A0C8C91D743A98A13147</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2019.01.066" target="_blank" >10.1016/j.electacta.2019.01.066</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Glassy carbon electrode activation – A way towards highly active, reproducible and stable electrode surface

Popis výsledku v původním jazyce

Glassy carbon (GC) is one of the most often used carbon materials in laboratory practice. Despite the fact that its electrocatalytic properties are largely surface-state dependent, a standardised procedure for its activation is lacking. This work presents a detailed, systematic investigation of a GC electrode pre-treatment based on potential cycling in a strongly alkaline environment within optimised potential limits. The surface composition was followed by X-ray photoelectron spectroscopy. This allowed determination of the overall elemental surface composition as well as identification of important surface functional groups. Electrocatalytic activity of the activated electrodes was tested by using Fe 3+/2+ , Fe(CN) 6 3−/4- and benzoquinone/hydroquinone couples. A combination of spectroscopic and electrochemical information made it possible to establish a correlation between the electrode&apos;s electrocatalytic activity and its surface composition and to identify optimal activation conditions which resulted in a highly active, reproducible and stable electrode surface. It can be concluded that, due to its relative simplicity and efficiency, the present method has the potential to become a standard procedure of GC electrode activation. © 2019 Elsevier Ltd

Název v anglickém jazyce

Glassy carbon electrode activation – A way towards highly active, reproducible and stable electrode surface

Popis výsledku anglicky

Glassy carbon (GC) is one of the most often used carbon materials in laboratory practice. Despite the fact that its electrocatalytic properties are largely surface-state dependent, a standardised procedure for its activation is lacking. This work presents a detailed, systematic investigation of a GC electrode pre-treatment based on potential cycling in a strongly alkaline environment within optimised potential limits. The surface composition was followed by X-ray photoelectron spectroscopy. This allowed determination of the overall elemental surface composition as well as identification of important surface functional groups. Electrocatalytic activity of the activated electrodes was tested by using Fe 3+/2+ , Fe(CN) 6 3−/4- and benzoquinone/hydroquinone couples. A combination of spectroscopic and electrochemical information made it possible to establish a correlation between the electrode&apos;s electrocatalytic activity and its surface composition and to identify optimal activation conditions which resulted in a highly active, reproducible and stable electrode surface. It can be concluded that, due to its relative simplicity and efficiency, the present method has the potential to become a standard procedure of GC electrode activation. © 2019 Elsevier Ltd

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

2019

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

299

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

963-970

Kód UT WoS článku

000457551900103

EID výsledku v databázi Scopus

2-s2.0-85060259007