Johnson is a computational scientist at PNNL. She studies molecular electrocatalysts and clusters using theoretical and computational methods. In particular, she is interested in the role of a molecule’s surroundings in its performance and behavior. Johnson has a BS in chemical engineering from the University of Colorado Boulder. She received her PhD in materials science from California Institute of Technology in 2017, and was a postdoctoral researcher in the Center for Molecular Electrocatalysis at PNNL. She was a National Science Foundation Graduate Fellow and a Resnick Fellow. Johnson joined PNNL as staff in 2019. Here, her work has focused on ammonia oxidation, hydrogen storage on liquid carriers, and solvation effects in mass spectrometry.