Part 1: NON-TECHNICAL SUMMARY The prevailing commercial lithium-ion batteries (LIBs) contain a flammable liquid electrolyte that can lead to major safety hazards. Replacing the liquid electrolyte with a nonflammable solid can alleviate these issues, but current batteries using solid electrolytes are unable to maintain high storage and fast charging capabilities. This project, supported by the Solid State and Materials Chemistry program in NSF’s Division of Materials Research, leverages a unique class of porous materials called metal-organic frameworks (MOFs), which are made of metal and organic components that are precisely arranged in an ordered network, as promising solid electrolytes. By selecting appropriate metal ions and organic compounds, the desired chemical and physical properties of the MOF can be tuned to improve battery performance. The expected outcome of this project is the acquisition of foundational knowledge to design solid electrolytes that are safe replacements to existing liquid electrolytes. Such advances are necessary for developing reliable next-generation batteries for portable electronics, electric transportation, and electric grid management. Additionally, through education and outreach activities this project promotes public scientific discourse through the training of early-career researchers in effective scientific communication, an accessible chemistry video series on battery research, and on-site research opportunities for high schoolers and