When ZIF-67 meets V2C MXene to form an advanced electrocatalyst for hydrogen evolution reaction in alkaline media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43929976" target="_blank" >RIV/60461373:22310/24:43929976 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21110/24:00375012

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0378775324002441" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0378775324002441</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2024.234293" target="_blank" >10.1016/j.jpowsour.2024.234293</a>

Jazyk výsledku

angličtina

Název v původním jazyce

When ZIF-67 meets V2C MXene to form an advanced electrocatalyst for hydrogen evolution reaction in alkaline media

Popis výsledku v původním jazyce

Efficient electrocatalysts for the hydrogen evolution reaction (HER) in alkaline electrolytes can ensure both durability and safety in electrolysis devices. The synergistic integration of metal-organic frameworks and two-dimensional materials holds promise for advancing electrocatalytic performance. Herein, we hybridized V2C MXene and the cobalt-based imidazolate zeolitic framework (ZIF-67) by an in-situ precipitation method and investigated its electrocatalytic properties for HER in 1 M KOH solution. Characterization unveiled the successful intercalation of ZIF-67 within the layers of V2C MXene nanosheets. The resulting V2C/ZIF-67 hybrid achieves a good current density of 10 mAcm(-2) at a modest overpotential of 197 mV vs RHE and a Tafel slope of 76 mVdec 1. Significantly, the hybrid material shows excellent stability with a minor overpotential loss of 5.5 mV, whereas the Pt/C-20% exhibits a more pronounced loss of 15.3 mV after 12 h of chronopotentiometry. Capitalizing on ZIF-67&apos;s substantial active surface and exceptional electrical conductivity of V2C MXene, hybrid material enables the fast transfer of charges and ions across the interface, culminating in its superior electro-catalytic prowess.

Název v anglickém jazyce

When ZIF-67 meets V2C MXene to form an advanced electrocatalyst for hydrogen evolution reaction in alkaline media

Popis výsledku anglicky

Efficient electrocatalysts for the hydrogen evolution reaction (HER) in alkaline electrolytes can ensure both durability and safety in electrolysis devices. The synergistic integration of metal-organic frameworks and two-dimensional materials holds promise for advancing electrocatalytic performance. Herein, we hybridized V2C MXene and the cobalt-based imidazolate zeolitic framework (ZIF-67) by an in-situ precipitation method and investigated its electrocatalytic properties for HER in 1 M KOH solution. Characterization unveiled the successful intercalation of ZIF-67 within the layers of V2C MXene nanosheets. The resulting V2C/ZIF-67 hybrid achieves a good current density of 10 mAcm(-2) at a modest overpotential of 197 mV vs RHE and a Tafel slope of 76 mVdec 1. Significantly, the hybrid material shows excellent stability with a minor overpotential loss of 5.5 mV, whereas the Pt/C-20% exhibits a more pronounced loss of 15.3 mV after 12 h of chronopotentiometry. Capitalizing on ZIF-67&apos;s substantial active surface and exceptional electrical conductivity of V2C MXene, hybrid material enables the fast transfer of charges and ions across the interface, culminating in its superior electro-catalytic prowess.

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

<a href="/cs/project/GA23-05918S" target="_blank" >GA23-05918S: Chytré bydlení - systémy akumulace energie ukryté v budovách jako součást základních stavebních prvků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

JOURNAL OF POWER SOURCES

ISSN

0378-7753

e-ISSN

1873-2755

Svazek periodika

602

Číslo periodika v rámci svazku

15 May 2024

Stát vydavatele periodika

ZA - Jihoafrická republika

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001205119300001

EID výsledku v databázi Scopus

2-s2.0-85187240750