20.500.12556/RUL-178298 Influence of salt concentration on the electrochemical performance of magnesium hexafluoroisopropoxy aluminate electrolyte One of the challenges in the development of Mg batteries is the lack of Mg electrolytes with good compatibility with both the Mg metal anode and cathode materials. In recent years, Mg salts based on weakly coordinating anions have emerged as promising Mg electrolytes. In this work, we systematically investigate the effects of salt concentration on the physicochemical properties, salt–solvent interactions, and electrochemical performance of the Mg[Al(hfip)$_4$]$_2$/G2 electrolyte. Infrared (IR) and Raman spectroscopy are used to study the changes in the electrolyte speciation across different concentrations, indicating a decreased amount of free glyme solvent with higher salt concentration. Mg plating/stripping of selected electrolytes is evaluated through three different testing protocols (conventional cycling, macrocycling, and cycling with added open-circuit voltage (OCV) rests) and compatibility with different cathode materials such as Chevrel phase, sulfur, and various organic redox-active compounds. In the electrochemical tests, more concentrated electrolytes demonstrated improved cathode cycling efficiency and more stable Mg plating/stripping, making an argument for Mg electrolytes with higher salt concentration. However, higher salt concentrations can increase the cost of Mg electrolytes. Further Mg electrolyte optimization should focus on adjusting electrolyte composition to specific electrode materials and other cell components, while maintaining a reasonable cost. cathode compatibility different metal plating/stripping procedures electrolyte speciation Mg electrolyte physicochemical properties elektrokemija magnezijeve baterije shranjevanje energije elektroliti true false true Angleški jezik Slovenski jezik Članek v reviji 2026-01-22 15:37:53 2026-01-22 15:37:53 2026-01-23 04:38:08 0000-00-00 00:00:00 2026 0 0 11 str. iss. 1, art. e202500497 Vol. 9 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 544.5/.6 2566-6223 10.1002/batt.202500497 250422787 Batteries___Supercaps_-_2025_-_Marojevic_-_Influence_of_Salt_Concentration_on_the_Electrochemical_Performance_of_Magnesium.pdf Batteries___Supercaps_-_2025_-_Marojevic_-_Influence_of_Salt_Concentration_on_the_Electrochemical_Performance_of_Magnesium.pdf 1 AC9E0BC51C42A79E7BCEB982B71D2143 aca4a3cb308a4ed38b2aaa1fc4865e26b77e6fc52d10e8611856e1cc7a95189e 53bf774f-f7a0-11f0-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=226028 https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/batt.202500497 1 eff0b50d-f79f-11f0-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=226026 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0