Exploring multielement catalyst spaces requires comparing activity, early stability, phase, and surface state across composition shifts that are easy to miss with isolated hand-made samples.
Creating catalyst thin-film libraries, measuring composition and structure, and adding localized electrochemical screening when the material question calls for it.
Multielement catalyst libraries; XRF or EDX/WDX; XRD; scanning droplet cell; SECCM; data-guided follow-up.
Active regions, weak regions, and compositions worth repeat testing are separated before deeper electrochemical work. The next catalyst experiment starts from a measured map.
