Partially Exfoliated and Oxidized V2CTx MXene as a Beneficial Support for the Oxygen Evolution Reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933836" target="_blank" >RIV/60461373:22310/25:43933836 - isvavai.cz</a>

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/celc.202500220" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/celc.202500220</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/celc.202500220" target="_blank" >10.1002/celc.202500220</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Partially Exfoliated and Oxidized V2CTx MXene as a Beneficial Support for the Oxygen Evolution Reaction

Popis výsledku v původním jazyce

The oxygen evolution reaction (OER) is a critical bottleneck in water-splitting technologies. Hence, developing efficient and stable OER electrocatalysts is one of the key parameters to improve this technology. Recently, MXenes such as Ti3C2Tx and V2CTx have shown promise as OER-enhancing additives when combined with transition metal oxides. However, MXene synthesis requires energy-intensive processes, and the materials are prone to oxidation in various environments, such as air, or during electrochemical reactions. While this oxidation is typically considered detrimental, this study investigates whether partially exfoliated and oxidized V2CTx can maintain or even enhance OER performance, potentially simplifying the synthesis requirements for V2CTx. In this study, V2CTx is intentionally oxidized and incorporated into CuCo-based composites at various loadings. X-ray diffraction and X-ray photoelectron spectroscopy confirm the presence of vanadium oxide species in the partially exfoliated and oxidized V2CTx. The electrochemical investigations reveal that the partially exfoliated and oxidized V2CTx enhances the OER performance compared to fresh V2CTx. These findings suggest that, unlike Ti3C2Tx, partially exfoliated and oxidized V2CTx retains its functionality in OER catalysis and even outperforms its fresh counterpart, providing a more accessible and efficient platform for water-splitting applications.

Název v anglickém jazyce

Partially Exfoliated and Oxidized V2CTx MXene as a Beneficial Support for the Oxygen Evolution Reaction

Popis výsledku anglicky

The oxygen evolution reaction (OER) is a critical bottleneck in water-splitting technologies. Hence, developing efficient and stable OER electrocatalysts is one of the key parameters to improve this technology. Recently, MXenes such as Ti3C2Tx and V2CTx have shown promise as OER-enhancing additives when combined with transition metal oxides. However, MXene synthesis requires energy-intensive processes, and the materials are prone to oxidation in various environments, such as air, or during electrochemical reactions. While this oxidation is typically considered detrimental, this study investigates whether partially exfoliated and oxidized V2CTx can maintain or even enhance OER performance, potentially simplifying the synthesis requirements for V2CTx. In this study, V2CTx is intentionally oxidized and incorporated into CuCo-based composites at various loadings. X-ray diffraction and X-ray photoelectron spectroscopy confirm the presence of vanadium oxide species in the partially exfoliated and oxidized V2CTx. The electrochemical investigations reveal that the partially exfoliated and oxidized V2CTx enhances the OER performance compared to fresh V2CTx. These findings suggest that, unlike Ti3C2Tx, partially exfoliated and oxidized V2CTx retains its functionality in OER catalysis and even outperforms its fresh counterpart, providing a more accessible and efficient platform for water-splitting applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

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

2025

Kód důvěrnosti údajů

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

Název periodika

ChemElectroChem

ISSN

2196-0216

e-ISSN

2196-0216

Svazek periodika

12

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

"e202500220"

Kód UT WoS článku

001605744100001

EID výsledku v databázi Scopus

2-s2.0-105020392184