2023 ANNUAL REPORT | BAR-ILAN INSTITUTE

48 which encompasses over 33 research groups from 7 Israeli academic institutions. This consortium is in fact a broadening of INREP – Israel National Research center for Electrochemical Propulsion (28 research groups) that was found by him 11 years ago and worked very well – turning competition into prolific collaboration between 7 Israeli academic institutions. Abstract Topic 1: High Voltage Lithium Ion Batteries Today, Li-ion batteries (LIBs) face the challenge of application in electrified vehicles (EVs), which require increased energy density, improved abuse tolerance, prolonged life, and low cost. LIB technology can significantly advance through stabilizing the high-voltage and highenergy cathodes based on the Ni-rich [LiNixCoyMnzO2 (NCM) (x→ 1)], Li, Mn-rich (LMR-NCM, Li1+xNiyCoyMnzO2, 0.1 < x < 0.2, z > 0.5), LiNi0.5Mn1.5O4 (LNMO) spinel cathodes. While the cycling stability of such cathode materials during cell operation tends to decrease for several reasons. Our group has been working for many years to develop different strategies to stabilize the electrochemical performance. Advanced Li-Ion Batteries for ElectroMobility: High Capacity Cathodes. Abstract Topic 2: Beyond Lithium Ion Batteries We face great global challenges in sustainability and energy economy because of the climate crisis, caused by pollution of the atmosphere by “greenhouse” gasses. We must change energy technologies, moving renewable energies, mostly solar. For that, developing reliable and costeffective technologies for large energy storage is mandatory. Currently, lithium ion batteries exhibit the best performances, in terms of energy and power densities, safety, cost, and mass production ability. That, by all means, makes them the most advanced battery technologies currently available commercially. However, Li ion battery technologies will have a very limited application for large energy storage because the global resources of lithium, are not enough in the scales required for global electricity production by solar energy. The applications require the use of a massive amount of active materials, hence only abundant element should be considered. Considering the relatively high production cost of aprotic electrolytes, and their associated safety concerns the use of a water-based electrolytes system would be a reasonable choice. To address this need, our study aims to research, and development of aqueous batteries and supercapacitors based on abundant and cost-effective elements such as Protons, Na, K, and Zn for large energy storage applications. To achieve this goal, our team focuses on the synthesis of new open framework cathodes and anodes suitable for reversible intention of large ions, the design of new aqueous electrolyte solutions formulations with suppressed water splitting activity, and the investigation of advanced current collectors with low catalytic activity for H2 and 02 formations. Abstract Topic 5: Lithium-Sulfur Batteries Lithium-sulfur (Li|S) batteries with metallic lithium as the negative electrodes and elemental sulfur as the positive electrodes’ active mass are electrochemical systems with the potential for extremely high gravimetric energy density. Sulfur is abundant, cost-effective, and batteries is constrained by several problems, including shuttle side reactions that lead to inevitable loss of active materials. We showed that the formation of effective solid electrolyte interphase (SEI) on the surface of sulfur/ microporous carbon composite electrodes during the initial discharge in fluoroethylene carbonate-based electrolyte solutions makes it possible the operation of S/carbon composite electrodes via the quasi-solid state (QSS) mechanism. The development of advanced Li|S batteries with practical parameters is in progress in our lab. scientific community search for a new, “beyond lithium ion batteries” technologies. Such systems may be based on Li-metal, Li-oxygen, Sodium ion, Magnesium ion and Zinc ion. Furthermore, there is a great interest in rechargeable batteries based on metallic anodes because their potential to deliver much higher energy density than their cation intercalation analogs-based systems. Typical electrochemical behavior and the basic structure of the MgxMo6S8 cathodes, corresponding to a maximal charge capacity of 122 mAh/g. The electrolyte solution was 0.25 M Mg(AlCl2BuEt)2 in THF. Abstract Topic 3: Water Treatment Our group’s activities cover various research topics with an emphasis on water treatment and renewable energy. - Development of new electrochemical methods for water desalination and selective removal of hazardous pollutants in water. - Development of new membranes for nanofiltration purposes. - Development of cutting-edge technology for disinfection of surfaces, skin and spaces. - Efficient technologies for CO2 capture from air. - Innovative approaches towards hydrogen production. A schematic illustration of the asymmetric CDI cell design for selective bromide ions recovery. Abstract Topic 4: Aqueous Batteries The renewable energy revolution, which accelerated in the recent decade opens new opportunities for the generation of eco-friendly electricity without greenhouse gases emission. The answer for this challenge could be large scale. However, this

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