The Development and Experimental Analysis of Freestanding Single-Walled Carbon Nanotube/Sulfur Composite Cathode for the Next Generation of Sulfur-Based Batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00382164" target="_blank" >RIV/68407700:21220/25:00382164 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/ente.202500134" target="_blank" >https://doi.org/10.1002/ente.202500134</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/ente.202500134" target="_blank" >10.1002/ente.202500134</a>
Alternative languages
Result language
angličtina
Original language name
The Development and Experimental Analysis of Freestanding Single-Walled Carbon Nanotube/Sulfur Composite Cathode for the Next Generation of Sulfur-Based Batteries
Original language description
This work uses a solution-based and scalable method to provide a freestanding single-walled carbon nanotube (SWCNT)/S cathode in both Li─S and Na─S batteries. SWCNTs with high conductivity and surface area can enhance the cathode flexibility. The incorporation of oxygen and sulfur bonds can enhance active redox sites for chemical adsorption. Sulfur and oxygen effectively hinder the shuttle effect by improving chemical interactions between the polysulfides and the nonpolar carbon framework, leading to improved cyclability of Na─S and Li─S cells. The cycling stability plots of Na─S and Li─S batteries with freestanding SWCNT/S as a cathode are investigated for 150 cycles at a high current density of 1000 mA g1. Both cells display a stable capacity behavior during cycling. The discharge capacity of the Li─S cell with the SWCNT/S cathode is retained at 978.2 mAh g1 while the Na─S cell only shows the capacity retention of 769.4 mAh g1 after 150 cycles. Coulombic efficiencies of ~94% and 90% are observed for Li─S and Na─S cells respectively. Therefore, the SWCNT/S cathode in both Li─S and Na─S batteries hinders the polysulfide shuttle, providing high electrolyte diffusion, resulting in improved active material reutilization and minimized capacity fading. Freestanding SWCNT/S cathode can enhance cycling stability over long-term cycling and is proved to be a promising cathode in both Li─S and Na─S batteries.
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
20301 - Mechanical engineering
Result continuities
Project
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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
Energy Technology
ISSN
2194-4288
e-ISSN
2194-4296
Volume of the periodical
13
Issue of the periodical within the volume
9
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
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UT code for WoS article
001446774400001
EID of the result in the Scopus database
2-s2.0-105000300068