Wang and Juefan’s paper on computationally screening for Ca posititve electrodes was published today in Chemistry of Materials. Searching through the chemical spaces of oxides and chalcogenides, the study used a set of robust filtering criteria, including redox-activity, thermodynamic stabiity, and charge-neutrality to arrive at a set of 10 candidate compounds, which were further evaluated using density functional theory-based calculations. Importantly, the study found two previously unreported candidates, namely, CaV2O4 and CaNb2O4, both of which exhibit fair Ca mobility. Finally, the paper unearthed a set of updated design principles for constructing facile ionic conductors. The work was led by Prof. Piero Canepa (National University of Singapore), in collaboration with Dr. Sai Gautam Gopalakrishnan.