Synergistic Catalytic Effect of Multiple Active Sites in High-Entropy MAX Materials for Lithium Polysulfide Enables High-Performance Lithium-Sulfur Batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933844" target="_blank" >RIV/60461373:22310/25:43933844 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsaem.5c00854" target="_blank" >https://pubs.acs.org/doi/10.1021/acsaem.5c00854</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsaem.5c00854" target="_blank" >10.1021/acsaem.5c00854</a>
Alternative languages
Result language
angličtina
Original language name
Synergistic Catalytic Effect of Multiple Active Sites in High-Entropy MAX Materials for Lithium Polysulfide Enables High-Performance Lithium-Sulfur Batteries
Original language description
The commercialization of lithium-sulfur batteries (LSBs) is limited by slow kinetics and the detrimental shuttle effect of lithium polysulfides (LiPSs), which impede their practical application. This study addresses these issues by exploring the use of high-entropy MAX phases (NbVMoTiAlC3 and CrVMoTiAlC3) as cathode additives. Through high-temperature ball milling, two types of MAX phases are synthesized, and their roles in enhancing the electrochemical performance of LSBs are systematically evaluated. The study finds that Nb-based MAX phases exhibit stronger interactions between transition metals, which significantly improve the electrical conductivity and chemical stability compared to Cr-based MAX phases. These unique properties enable NbVMoTiAlC3 to enhance Li+ migration kinetics and improve sulfur species utilization efficiency. In situ ultraviolet-visible spectroscopy further shows that NbVMoTiAlC3 promotes the catalytic conversion of LiPSs, increasing the number of S3 center dot- radicals. As a result, the cell with NbVMoTiAlC3@CNT/S exhibits a high capacity retention of 85.29% after 100 cycles under a sulfur loading of 3.85 mg cm-2 and a low capacity decay rate of 0.088% after 500 cycles at 3 C. This work demonstrates the potential of MAX-phase materials to overcome key challenges in LSBs, offering insights for the development of high-performance energy storage systems.
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
10400 - Chemical sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
ACS Applied Energy Materials
ISSN
2574-0962
e-ISSN
2574-0962
Volume of the periodical
8
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
7538-7550
UT code for WoS article
001497993400001
EID of the result in the Scopus database
2-s2.0-105006695127