Molybdenum single-atom-bridged ReS2–graphene heterostructures for boosting supercapacitor performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73631549" target="_blank" >RIV/61989592:15640/25:73631549 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/25:10258726

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1385894725066367?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1385894725066367?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.165798" target="_blank" >10.1016/j.cej.2025.165798</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Molybdenum single-atom-bridged ReS2–graphene heterostructures for boosting supercapacitor performance

Popis výsledku v původním jazyce

Rhenium disulfide (ReS&lt;inf&gt;2&lt;/inf&gt;), a two-dimensional transition metal dichalcogenide (TMD), possesses weak interlayer interactions and tunable band gap, however its limited charge storage and cycling stability hinder its application in supercapacitors (SCs). This work demonstrates a paradigm shift in the performance of ReS&lt;inf&gt;2&lt;/inf&gt; by introducing molybdenum (Mo) single-atom reactive centers, leading to strong interfacial coupling with a nitrogen-doped graphene (GN3). Notably, Mo‑nitrogen bonds are formed enhancing charge storage in the Mo-ReS&lt;inf&gt;2&lt;/inf&gt;@GN3 (MRG-2) heterostructure. The incorporation of Mo also induces p-type doping (beneficial for coupling with the n-type GN3), lowers the band gap, and enhances the activity of the in-plane sulfur atoms. The MRG-2 electrode delivered 87 % and 31 % increase in capacitance compared to pristine ReS&lt;inf&gt;2&lt;/inf&gt; and Mo-ReS&lt;inf&gt;2&lt;/inf&gt;, respectively, along with a four-fold enhancement in electrical conductivity. An asymmetric SC cell using MRG-2 as the negative and NiCo&lt;inf&gt;2&lt;/inf&gt;S&lt;inf&gt;4&lt;/inf&gt;/graphene as the positive electrode achieved exceptional gravimetric (54.3 Wh kg&lt;sup&gt;−1&lt;/sup&gt; at 1.0 kW kg&lt;sup&gt;−1&lt;/sup&gt;), volumetric (110.5 mWh cm&lt;sup&gt;−3&lt;/sup&gt; at 0.940 W cm&lt;sup&gt;−3&lt;/sup&gt;), and areal (54.3 μWh cm&lt;sup&gt;−2&lt;/sup&gt; at 1.0 mW cm&lt;sup&gt;−2&lt;/sup&gt;) energy densities, and remained stable for at least 10,000 cycles. These findings establish interfacial single-atom engineering as a transformative approach to optimizing TMD-based heterostructures for next-generation energy storage technologies.

Název v anglickém jazyce

Molybdenum single-atom-bridged ReS2–graphene heterostructures for boosting supercapacitor performance

Popis výsledku anglicky

Rhenium disulfide (ReS&lt;inf&gt;2&lt;/inf&gt;), a two-dimensional transition metal dichalcogenide (TMD), possesses weak interlayer interactions and tunable band gap, however its limited charge storage and cycling stability hinder its application in supercapacitors (SCs). This work demonstrates a paradigm shift in the performance of ReS&lt;inf&gt;2&lt;/inf&gt; by introducing molybdenum (Mo) single-atom reactive centers, leading to strong interfacial coupling with a nitrogen-doped graphene (GN3). Notably, Mo‑nitrogen bonds are formed enhancing charge storage in the Mo-ReS&lt;inf&gt;2&lt;/inf&gt;@GN3 (MRG-2) heterostructure. The incorporation of Mo also induces p-type doping (beneficial for coupling with the n-type GN3), lowers the band gap, and enhances the activity of the in-plane sulfur atoms. The MRG-2 electrode delivered 87 % and 31 % increase in capacitance compared to pristine ReS&lt;inf&gt;2&lt;/inf&gt; and Mo-ReS&lt;inf&gt;2&lt;/inf&gt;, respectively, along with a four-fold enhancement in electrical conductivity. An asymmetric SC cell using MRG-2 as the negative and NiCo&lt;inf&gt;2&lt;/inf&gt;S&lt;inf&gt;4&lt;/inf&gt;/graphene as the positive electrode achieved exceptional gravimetric (54.3 Wh kg&lt;sup&gt;−1&lt;/sup&gt; at 1.0 kW kg&lt;sup&gt;−1&lt;/sup&gt;), volumetric (110.5 mWh cm&lt;sup&gt;−3&lt;/sup&gt; at 0.940 W cm&lt;sup&gt;−3&lt;/sup&gt;), and areal (54.3 μWh cm&lt;sup&gt;−2&lt;/sup&gt; at 1.0 mW cm&lt;sup&gt;−2&lt;/sup&gt;) energy densities, and remained stable for at least 10,000 cycles. These findings establish interfacial single-atom engineering as a transformative approach to optimizing TMD-based heterostructures for next-generation energy storage technologies.

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

2025

Kód důvěrnosti údajů

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

Název periodika

CHEMICAL ENGINEERING JOURNAL

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

520

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

nestránkováno

Kód UT WoS článku

001550198600019

EID výsledku v databázi Scopus

2-s2.0-105010852167