Batteries play a tremendous role in our society and economy. From portable electronics and sensors to hybrid and electric transportation to our nation’s electrical grid, batteries provide an important way to store energy across large differences in scale. However, there is continued need to build better, safer batteries so that they can store more energy, be charged and discharged more times, and be assembled with less expensive and more readily available components. Addressing these challenges starts with the materials inside of the battery. This project will design new battery components that are made from earth abundant materials dissolved in water. These materials can be less expensive and safer than those found in conventional lithium-ion batteries, but they are not currently as powerful. Moreover, as these materials are made from mixtures of different chemicals at different concentrations, the space for design is expansive. To aid in the search through this complex chemical space, this project will develop and deploy robotic experiments and machine learning models to rapidly vary component combinations, record their properties, and make predictions as to new systems to explore. Promising materials will be tested in batteries to evaluate how they perform. Researchers will be trained as new battery scientists who understand both the chemistry and engineering of emerging battery science, and they will learn how to develop and use artificial intelligence to expedite discove