Amino-functionalized reduced graphene oxide@MoS2@CoS2 heterostructure as a high-rate anode material for ultralong lifespan sodium–sulfur batteries
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Amino-functionalized reduced graphene oxide@MoS2@CoS2 heterostructure as a high-rate anode material for ultralong lifespan sodium–sulfur batteries
Original language description
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.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Journal of Chemistry
ISSN
1144-0546
e-ISSN
1369-9261
Volume of the periodical
49
Issue of the periodical within the volume
06
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
10379-10387
UT code for WoS article
001500718200001
EID of the result in the Scopus database
2-s2.0-105007768234