The TiO2-Modified Separator Improving the Electrochemical Performance of Lithium-Sulfur Battery

0549138 - ÚFCH JH 2022 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Zukalová, Markéta - Vinarčíková, Monika - Pitňa Lásková, Barbora - Kavan, Ladislav
The TiO2-Modified Separator Improving the Electrochemical Performance of Lithium-Sulfur Battery.
ECS Transaction. Volume 105. Pennington: IOPscience, 2021, s. 183-189. ISSN 1938-6737.
[International Conference Advanced Batteries, Accumulators and Fuel Cells /22./. Brno (CZ), 22.08.2021-25.08.2021]
Grant CEP: GA ČR(CZ) GA20-03564S
Institucionální podpora: RVO:61388955
Klíčová slova: Electrochemical impedance spectroscopy * Electrolytes * Lithium Batteries
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Způsob publikování: Omezený přístup

Electrochemical performance of activated carbon/sulfur composite cathode in the Li-S cell with standard and TiO2-modified separator is evaluated by cyclic voltammetry and galvanostatic chronopotentiometry. The modification of the separator by TiO2 impregnation has beneficial effect on the charge capacity of the activated carbon/sulfur cathode in the Li-S cell. The specific capacity of the cathode in the cell with TiO2-modified separator is 632 mAh g-1 (calculated from cyclic voltammetry) and 673 mAh g-1 (determined from galvanostatic chronopotentiometry). Facile impregnation of the separator with nanocrystalline TiO2 results in the 10-20 % stable increase of the charge capacity of corresponding activated carbon/sulfur cathode as compared to its electrochemical performance in the system with non-modified separator.
Trvalý link: http://hdl.handle.net/11104/0325155