6R-TaS2 Anchored on Mo Foil as a Robust Electrocatalyst for Hydrogen Evolution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933851" target="_blank" >RIV/60461373:22310/25:43933851 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acsami.5c22479" target="_blank" >https://pubs.acs.org/doi/10.1021/acsami.5c22479</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.5c22479" target="_blank" >10.1021/acsami.5c22479</a>

Jazyk výsledku

angličtina

Název v původním jazyce

6R-TaS2 Anchored on Mo Foil as a Robust Electrocatalyst for Hydrogen Evolution

Popis výsledku v původním jazyce

Affordable and durable HER catalysts are critical for sustainable hydrogen production. We report electrochemically exfoliated multilayer TaS2 flakes, predominantly in the metallic 6R phase, anchored on conductive Mo foil. The optimized hybrid (0.8 mg TaS2) initiates HER at -0.06 V vs RHE and reaches -10 mA cm-2 at only -150 mV vs RHE, approaching the performance of 20% Pt/C on Mo. Fast kinetics (Tafel slope of 68 mV dec-1), low charge-transfer resistance, and a high electrochemically active surface area (similar to 5.5 cm2) contribute to the superior HER activity, while maintaining similar to 58% of the initial current after similar to 56 h of continuous operation. Compared to TaS2 drop-cast on glassy carbon, the Mo substrate boosts performance by facilitating electron transport and proton adsorption. This work demonstrates substrate engineering combined with metallic transition metal dichalcogenide phases as a scalable route to high-performance, earth-abundant HER catalysts. Beyond performance, this study highlights the largely unexplored potential of the 6R polymorph, whose intrinsic metallicity and distinct stacking offer new opportunities for interface engineering in 2D electrocatalysts.

Název v anglickém jazyce

6R-TaS2 Anchored on Mo Foil as a Robust Electrocatalyst for Hydrogen Evolution

Popis výsledku anglicky

Affordable and durable HER catalysts are critical for sustainable hydrogen production. We report electrochemically exfoliated multilayer TaS2 flakes, predominantly in the metallic 6R phase, anchored on conductive Mo foil. The optimized hybrid (0.8 mg TaS2) initiates HER at -0.06 V vs RHE and reaches -10 mA cm-2 at only -150 mV vs RHE, approaching the performance of 20% Pt/C on Mo. Fast kinetics (Tafel slope of 68 mV dec-1), low charge-transfer resistance, and a high electrochemically active surface area (similar to 5.5 cm2) contribute to the superior HER activity, while maintaining similar to 58% of the initial current after similar to 56 h of continuous operation. Compared to TaS2 drop-cast on glassy carbon, the Mo substrate boosts performance by facilitating electron transport and proton adsorption. This work demonstrates substrate engineering combined with metallic transition metal dichalcogenide phases as a scalable route to high-performance, earth-abundant HER catalysts. Beyond performance, this study highlights the largely unexplored potential of the 6R polymorph, whose intrinsic metallicity and distinct stacking offer new opportunities for interface engineering in 2D electrocatalysts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

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

ACS Applied Materials &amp; Interfaces

ISSN

1944-8244

e-ISSN

1944-8252

Svazek periodika

17

Číslo periodika v rámci svazku

51

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

69571-69578

Kód UT WoS článku

001639226700001

EID výsledku v databázi Scopus

2-s2.0-105025654213