In this talk, I will first give an overview of some recent work in photoelectrochemical (PEC) materials and device development as part of the HydroGEN Consortium. Within this consortium, I serve as the NREL lead and a capability expert for the PEC water splitting technology. Our group supports several, university-led seedling projects in developing various PEC materials and plays the central role in a national laboratory collaboration focused on improving PEC device durability. I will highlight the development and demonstration of our flagship capability for PEC device benchmarking and on-sun testing.

In the second part of this talk, I will present some efforts in low-temperature electrolysis (LTE) research as part of the H2NEW Consortium and a Technology Commercialization Fund project. My work focuses on ex-situ characterization of membrane electrode assembly (MEA) performance and development of porous transport layer (PTL) materials and surface modifications. The ex-situ characterization approaches are used in concert with in-situ testing to understand and improve LTE materials and interface properties.

Finally, I will give an overview of NREL’s recent E2M electrochemical device testbed development for CO₂ and N₂ reduction research. This includes powerful, inline product analysis systems and custom hardware to study electrocatalyst integration, evaluate cell architectures, and conduct spatial and combinatorial studies.