Enhanced electrochemical performance of MoSe 2 nanosheets on CoAllayered double hydroxide for oxygen evolution reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39921912" target="_blank" >RIV/00216275:25310/24:39921912 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0925838824007606?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838824007606?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2024.174173" target="_blank" >10.1016/j.jallcom.2024.174173</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced electrochemical performance of MoSe 2 nanosheets on CoAllayered double hydroxide for oxygen evolution reaction

Popis výsledku v původním jazyce

The design of high -efficiency electrocatalysts for water electrolysis has attracted much attention. A crucial halfreaction in electrochemical water splitting is the oxygen evolution reaction (OER), which suffers from sluggish reaction kinetics due to the high -energy barrier of the complex electron transfer process. This study presents a MoSe 2 @CoAl-layered double hydroxide (LDH) hybrid nanostructure prepared using the facile hydrothermal method and investigated as a potential OER electrocatalyst. Morphological analysis indicated that the MoSe 2 formed in very thin nanosheet structures containing multiple defects on the LDH platelets, increasing the number of catalytic active sites. Compared with pristine MoSe 2 and CoAl-LDH, the obtained MoSe 2 @CoAl-LDH catalyst exhibited enhanced electrocatalytic activity for the OER in an alkaline solution. The MoSe 2 @CoAl-LDH electrocatalyst showed an overpotential of 360 mV at a current density of 10 mA cm -2 and a small Tafel slope of 53 mV dec -1 . In addition, it demonstrated good electrochemical stability. The MoSe 2 @CoAl-LDH exhibited a lower Tafel slope than commercial RuO 2 , indicating faster electron transfer on the MoSe 2 @CoAl-LDH electrode.

Název v anglickém jazyce

Enhanced electrochemical performance of MoSe 2 nanosheets on CoAllayered double hydroxide for oxygen evolution reaction

Popis výsledku anglicky

The design of high -efficiency electrocatalysts for water electrolysis has attracted much attention. A crucial halfreaction in electrochemical water splitting is the oxygen evolution reaction (OER), which suffers from sluggish reaction kinetics due to the high -energy barrier of the complex electron transfer process. This study presents a MoSe 2 @CoAl-layered double hydroxide (LDH) hybrid nanostructure prepared using the facile hydrothermal method and investigated as a potential OER electrocatalyst. Morphological analysis indicated that the MoSe 2 formed in very thin nanosheet structures containing multiple defects on the LDH platelets, increasing the number of catalytic active sites. Compared with pristine MoSe 2 and CoAl-LDH, the obtained MoSe 2 @CoAl-LDH catalyst exhibited enhanced electrocatalytic activity for the OER in an alkaline solution. The MoSe 2 @CoAl-LDH electrocatalyst showed an overpotential of 360 mV at a current density of 10 mA cm -2 and a small Tafel slope of 53 mV dec -1 . In addition, it demonstrated good electrochemical stability. The MoSe 2 @CoAl-LDH exhibited a lower Tafel slope than commercial RuO 2 , indicating faster electron transfer on the MoSe 2 @CoAl-LDH electrode.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

987

Číslo periodika v rámci svazku

June 2024

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

174173

Kód UT WoS článku

001221257200001

EID výsledku v databázi Scopus

2-s2.0-85188066589