Hierarchical Co/CoSe@MoSe2 heterostructures enable efficient polysulfides trapping and conversion for highly stable lithium-sulfur batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F25%3A63595859" target="_blank" >RIV/70883521:28610/25:63595859 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2352152X25016792?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352152X25016792?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.est.2025.116966" target="_blank" >10.1016/j.est.2025.116966</a>
Alternative languages
Result language
angličtina
Original language name
Hierarchical Co/CoSe@MoSe2 heterostructures enable efficient polysulfides trapping and conversion for highly stable lithium-sulfur batteries
Original language description
Lithium-sulfur batteries (LSBs) are now facing great challenges in the sluggish reaction kinetics and the severe shuttle effect of polysulfides. To address these issues, it is of crucial importance to design efficient sulfur cathode with strong adsorption, high catalytic activity and high electrical conductivity. Herein, Co/CoSe@MoSe2 hierarchically heterostructured catalyst is synthesized via a facile pyrolysis and hydrothermal method, in which MoSe₂ nanosheets are coated on Co/CoSe hollow microspheres. As-prepared structure serves as a sulfur host for lithium-sulfur batteries (LSBs). Metal–organic framework (MOF)-derived Co/CoSe metallic junction facilitates rapid catalytic conversion of lithium polysulfide (LiPSs), while two-dimensional MoSe2 nanosheets possessing a strong polarity and high specific surface area effectively trap LiPSs and suppress the shuttle effect. Last but not least, porous carbon networks derived by MOFs accelerate the charge transfer within the catalyst. With these synergistic advantages from their heterogeneous components, the assembled LSBs based on Co/CoSe@MoSe2 sulfur cathode delivers a high discharge capacity of 1313.9 mA h g−1 at 0.1C with a sulfur loading of 1.5 mg cm−2. Even at a high sulfur loading of 3.0 mg cm−2, it still demonstrates a stable cycling with a low capacity decay of 0.042 % per cycle after 200 cycles at 0.2C. This work provides new insights into understanding of heterostructured catalyst systems with balancing adsorption and catalysis for high-performance LSBs.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
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
Journal of Energy Storage
ISSN
2352-152X
e-ISSN
2352-1538
Volume of the periodical
125
Issue of the periodical within the volume
Neuveden
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
nestránkováno
UT code for WoS article
001490699100008
EID of the result in the Scopus database
2-s2.0-105004355447