Influence of carbon structure/porosity on the electrochemical performance in Li–sulfur batteries
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00581752" target="_blank" >RIV/61388955:_____/24:00581752 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0349908" target="_blank" >https://hdl.handle.net/11104/0349908</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00706-023-03160-6" target="_blank" >10.1007/s00706-023-03160-6</a>
Alternative languages
Result language
angličtina
Original language name
Influence of carbon structure/porosity on the electrochemical performance in Li–sulfur batteries
Original language description
The porous structure of three different, commercially available porous carbonaceous materials is investigated by the αS-plot method and by the t-plot method. Subsequently, the electrochemical properties of sulfur-free porous carbon electrodes from inspected materials are studied by cyclic voltammetry. The comparison of double-layer capacitances with the corresponding adsorption isotherms of N2 reveals the role of micropores during the capacitive charging of carbons by Li+. The studied carbons are added to the sulfur cathodes and evaluated. The cyclic voltammograms show no contribution of micropores in the carbon structure to the electrochemical processes taking place in the lithium–sulfur coin cell. The highest specific capacity of 816 mAh/g is observed for material with the lowest content of micropores in the structure (14%). The partially mesoporous and partially microporous (65%) sample and the predominantly microporous one (87%), show specific capacities of 664 mAh/g and 560 mAh/g, respectively. The galvanostatic cycling of lithium–sulfur coin cells with carbonaceous additives reveals that the mesopores and macropores in the carbon structure increase the specific charge capacity of the lithium–sulfur batteries and that the micropores improve the cycling stability of these 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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GA20-03564S" target="_blank" >GA20-03564S: New host materials and structures for advanced lithium-sulfur batteries</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monatshefte fur Chemie
ISSN
0026-9247
e-ISSN
1434-4475
Volume of the periodical
155
Issue of the periodical within the volume
APR 2024
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
353-360
UT code for WoS article
001143146700001
EID of the result in the Scopus database
2-s2.0-85182421671