20.500.12556/DKUM-97276 Changes in Internal Resistance of Lithium-Sulfur Batteries When Using Electrolytes Based on Ionic Liquid [Deme][Tfsi], Sulfolane or Tegdme Solvent Spremembe notranje odpornosti litij-žveplovih baterij pri uporabi elektrolitov na osnovi ionske tekočine [DEME] [TFSI], sulfolana ali topila TEGDME Internal resistance of lithium-sulfur batteries was investigated with impedance spectroscopy. In order to understand the effect of various common solvents for Li-S battery preparation, the electrolyte in the cells was varied (ionic liquid [DEME][TFSI], sulfolane or TEGDME solvent). The impedance changes were followed at several points during discharge and charge of the batteries and through 50 cycles of their use. The resulting spectra were analyzed and fitted, extracting information on four different impedance contribution. The contributions were assigned to the electrolyte, anode or cathode. Their change through a single cycle and through multiples cycles of battery use was evaluated as well as compared between cells employing different electrolytes. Tehnika impedančne spektroskopije je bila uporabljena za študijo notranje upornosti litijžveplovih akumulatorjev. Da bi razumeli vpliv različnih topil pogosto uporabljanih v elektrolitih za Li-S akumulatorje, so bili v raziskavi uporabljeni trije različni elektroliti (na osnovi ionske tekočine [DEME] [TFSI], topila sulfolan, ali topila TEGDME). Spremembe v notranji upornosti smo spremljali na več točkah praznjenja in polnjenja celic ter čez 50 ciklov delovanja. Iz impedančnih spektrov so bili preko analize in prileganja z enostavnim ekvivalentnim vezjem razločeni štirje impedančni prispevki, ki so bili pripisani elektrolitu, procesom na anodi ali procesom na katodi. Narejena je bila analiza sprememb v velikostih teh prispevkov in primerjava med različnimi uporabljenimi elektroliti. lithium-sulfur batteries polysulfides impedance spectroscopy ionic liquid electrolytes litij-žveplovi akumulatorji impedančna spektroskopija polisulfidi ionska tekočina elektroliti true false true Univerza v Mariboru, Univerzitetna založba Angleški jezik Slovenski jezik Znanstveno delo 2026-02-26 09:16:49 2026-02-26 09:16:49 2026-04-01 10:21:28 0000-00-00 00:00:00 2021 0 Maribor 0 5 št.1/2 Letn.11 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-01-01 544.5/.6 87617539 10.18690/analipazu.11.1-2.64-71.2021 2820-364X Changes_in_internal_resist-Drvaric_Talian-2022.pdf Changes_in_internal_resist-Drvaric_Talian-2022.pdf 1 919075570A6E17B1E64972C6B600EF73 210f74c357958a4261921bfbc923c974828a2625676fa62204483667d5f8e14d d33c3508-12eb-11f1-94ed-00155d580e1a https://dk.um.si/Dokument.php?lang=slv&id=203911 https://journals.um.si/index.php/anali-pazu/article/view/1918 0 84187313-12eb-11f1-94ed-00155d580e1a https://dk.um.si/Dokument.php?lang=slv&id=203910 Univerzitetna založba Univerze v Mariboru Anali PAZU 0 0 0