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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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • 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

  • ISSN

    1742-6588

  • e-ISSN

  • 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