In aqua electrochemistry probed by XPEEM: experimental setup, examples, and challenges

In an overview published in Topics in Catalysis, we report on the recent developments of liquid cells for photoemission electron microscopy. We discuss challenges associated with the design of membranes for photon in - electron out spectroscopy, examine advantages and disadvantages of various cell geometries, and highlight the role of microscopy in a statistical analysis of liquid spectroscopy experiments.