Solvation Interactions in Water–DMSO Electrolyte Systems for Enhanced Aqueous Lithium Battery Performance
Bergman G. Leifer N. Zhigalenok Y. Malchik F. Sharon D. Aurbach D. Zhang Y. Goobes G. Shpigel N.
18 February 2026American Chemical Society
ACS Applied Materials and Interfaces
2026#18Issue 69750 - 9763 pp.
Hybrid electrolyte solutions composed of water and water-miscible organic solvents have gained attention for their extended electrochemical stability window, nonflammability, high ionic conductivity, and cost-effectiveness. Among them, dimethyl sulfoxide (DMSO) is a particularly attractive cosolvent due to its high dielectric constant, strong hydrogen-bonding ability, low volatility, and excellent chemical stability. When mixed with water, DMSO disrupts the native hydrogen-bond network, significantly altering key physicochemical properties such as viscosity, density, dielectric constant, and water activity─all of which are highly sensitive to composition. Despite their potential, the behavior of water–DMSO electrolytes under high salt concentrations and their effects on electrode performance remain underexplored. Here, we investigated nearly saturated LiClO4 solutions in water–DMSO mixtures, combining electrochemical testing with NMR, Raman spectroscopies, and theoretical modeling to reveal solvation structures and ion–solvent interactions. We further evaluated how these electrolyte solution compositions impact the electrochemical performance of LiMn2O4 cathodes and TiO2 anodes. These insights highlight the promise of DMSO-based hybrid electrolyte solutions for advancing safe and high-performance aqueous lithium battery technologies.
aqueous electrolytes , aqueous Li-ion batteries , DMSO−water interactions , hybrid electrolyte solutions , LiMn2O4 , TiO2
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Department of Chemistry, BINA - BIU Institute for Nanotechnology and Advanced Materials, INIES - Israel National Institute for Energy Storage, Bar-Ilan University, Ramat-Gan, 5290002, Israel
Department of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Institute of Chemistry, Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, 46556, IN, United States
Department of Chemical Sciences, Ariel University, Ariel, 40700, Israel
Department of Chemistry
Department of Chemistry and Chemical Technology
Institute of Chemistry
Department of Chemical and Biomolecular Engineering
Department of Chemical Sciences
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026