Amino-functionalized reduced graphene oxide@MoS2@CoS2 heterostructure as a high-rate anode material for ultralong lifespan sodium–sulfur batteries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00383732" target="_blank" >RIV/68407700:21220/25:00383732 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1039/D5NJ00698H" target="_blank" >https://doi.org/10.1039/D5NJ00698H</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/D5NJ00698H" target="_blank" >10.1039/D5NJ00698H</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Amino-functionalized reduced graphene oxide@MoS2@CoS2 heterostructure as a high-rate anode material for ultralong lifespan sodium–sulfur batteries

Popis výsledku v původním jazyce

A nanocomposite comprising MoS2@CoS2 amino-functionalized graphene (En-RGO) with a two-dimensional structure has been successfully synthesized using a simple self-assembly technique. The resulting cell with a MoS2@CoS2@En-RGO anode and a sulfur cathode exhibits a superior hierarchical architecture that significantly facilitates ion mobility, cell conductivity, and pseudocapacitance. Consequently, this leads to improved rate performance and extended cycle stability in Na–S batteries. Micron-sized CoS2 was synthesized by solvothermal growth of MoS2 nanosheets on its surface. This composite material presents enhanced sodium-ion diffusion kinetics attributed to its heterogeneous interface, reduced ion diffusion pathways and increased exposure of active sites for sodium storage due to its hierarchical nanosheet structure. Additionally, amino functionalized graphene oxide with uniform nitrogen doping could improve electronic conductivity. The cell employing MoS2@CoS2@En-RGO with superior ion mobility and enhanced adsorption energy of Na+ ions achieves a cycle stability of 541.2 mA h g-1 after 1800 cycles. The increased adsorption energy facilitates a more efficient sodiation process at MoS2@CoS2@En-RGO compared to En-RGO. Additionally, the MoS2@CoS2@En-RGO anode demonstrates a capacity retention of 95.8% after 1800 cycles at 1 A g-1. The enhanced mobility of Na ions and the effective adsorption of polysulfide chains in MoS2@CoS2@En-RGO have been examined through DFT calculations, confirming its potential as a promising anode material for the advancement of high-performance Na–S batteries.

Název v anglickém jazyce

Amino-functionalized reduced graphene oxide@MoS2@CoS2 heterostructure as a high-rate anode material for ultralong lifespan sodium–sulfur batteries

Popis výsledku anglicky

A nanocomposite comprising MoS2@CoS2 amino-functionalized graphene (En-RGO) with a two-dimensional structure has been successfully synthesized using a simple self-assembly technique. The resulting cell with a MoS2@CoS2@En-RGO anode and a sulfur cathode exhibits a superior hierarchical architecture that significantly facilitates ion mobility, cell conductivity, and pseudocapacitance. Consequently, this leads to improved rate performance and extended cycle stability in Na–S batteries. Micron-sized CoS2 was synthesized by solvothermal growth of MoS2 nanosheets on its surface. This composite material presents enhanced sodium-ion diffusion kinetics attributed to its heterogeneous interface, reduced ion diffusion pathways and increased exposure of active sites for sodium storage due to its hierarchical nanosheet structure. Additionally, amino functionalized graphene oxide with uniform nitrogen doping could improve electronic conductivity. The cell employing MoS2@CoS2@En-RGO with superior ion mobility and enhanced adsorption energy of Na+ ions achieves a cycle stability of 541.2 mA h g-1 after 1800 cycles. The increased adsorption energy facilitates a more efficient sodiation process at MoS2@CoS2@En-RGO compared to En-RGO. Additionally, the MoS2@CoS2@En-RGO anode demonstrates a capacity retention of 95.8% after 1800 cycles at 1 A g-1. The enhanced mobility of Na ions and the effective adsorption of polysulfide chains in MoS2@CoS2@En-RGO have been examined through DFT calculations, confirming its potential as a promising anode material for the advancement of high-performance Na–S batteries.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

New Journal of Chemistry

ISSN

1144-0546

e-ISSN

1369-9261

Svazek periodika

49

Číslo periodika v rámci svazku

06

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

10379-10387

Kód UT WoS článku

001500718200001

EID výsledku v databázi Scopus

2-s2.0-105007768234