Composite cathode for Li-sulfur system: Effect of inorganic additives on electrochemical performance
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F22%3A00564985" target="_blank" >RIV/61388955:_____/22:00564985 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1742-6596/2382/1/012001" target="_blank" >http://dx.doi.org/10.1088/1742-6596/2382/1/012001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1742-6596/2382/1/012001" target="_blank" >10.1088/1742-6596/2382/1/012001</a>
Alternative languages
Result language
angličtina
Original language name
Composite cathode for Li-sulfur system: Effect of inorganic additives on electrochemical performance
Original language description
The influence of five different inorganic additives with different composition and morphology, viz. nanofibrous rutile/TiOxNy, Li4Ti5O12 (LTS) from Altair, TiO2-P90 from Evonik, TiOxNy-anatase and nano-TiO2 on the electrochemical performance of the activated carbon/sulfur composite cathode is evaluated by cyclic voltammetry at the scan rate of 0.1 mV s-1 and by galvanostatic chronopotentiometry at the 0.1 C rate. The composites are prepared by facile mechanical mixing of activated carbon with the inorganic additive and subsequent melting-diffusion with sulfur. The addition of nano-TiO2 from titanium isopropoxide, TiOxNy-anatase, rutile/TiOxNy, and LTS Altair to the carbon/sulfur composite cathode increased the charge capacity of the corresponding Li-sulfur cell. The negative effect of the P90 additive can be attributed to the blocking of its surface by Al2O3 and SiO2, hindering the adsorption of polysulfides. TiOxNy-anatase additive exhibits the highest capacity improvement due to its surface-enhanced redox chemistry of conductive and sulphiphilic surface resulting in a 7 % increase of the voltammetric charge capacity. In addition, this additive has a beneficial effect on the cycling stability of the sulfur composite cathode during galvanostatic cycling.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
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
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Journal of Physics: Conference Series
ISBN
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ISSN
1742-6588
e-ISSN
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Number of pages
9
Pages from-to
012001
Publisher name
IOP Publishing
Place of publication
Bristol
Event location
Brno
Event date
Aug 21, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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