Ultrathin Oxide Layers for Solar and Electrocatalytic Systems

A Senior Scientist at Lawrence Berkeley National Laboratory, Heinz Frei studied chemistry at the Swiss Federal Institute of Technology (ETH) Zurich (PhD in physical chemistry 1977). After a postdoctoral stay at the Chemistry Department of the University of California at Berkeley, he started a research group in solar photochemistry at LBNL with focus on chemistry with near infrared light, work for which he received the Werner Prize of the Swiss Chemical Society in 1990. Since then, Frei has established new methods for utilizing visible and near infrared light for the environmentally friendly synthesis of useful chemicals and for the chemical storage of solar photons, communicated in over 160 peer reviewed articles. Currently, his research effort focuses on the scientific challenges of the direct conversion of carbon dioxide and water to a liquid fuel by artificial photosynthesis. Frei served as a Deputy Director of LBNL’s Physical Biosciences Division (1998-2007) and the Helios Solar Energy Research Center (2008-2011). He was one of the founding scientists of the Joint Center for Artificial Photosynthesis (JCAP, the U.S. Dept. of Energy Innovation Hub for Fuels from Sunlight), Leader of its Interface Project 2010-2015, and Dept. Head of JCAP at LBNL in 2012. Frei has co-organized several symposia on solar photochemistry in the past few years and was Joint-Chair of the 2016 Gordon Research Conference on Solar Fuels. He was elected Fellow of the American Association for the Advancement of Science in 2014. Daniel Esposito received his Ph.D. in Chemical Engineering at the University of Delaware and studied as a postdoctoral research associate at the National Institute of Standards and Technology (NIST) under a National Research Council fellowship.  He is now an Associate Professor in Chemical Engineering at Columbia University, where he is also a core member of the Columbia Electrochemical Energy Center (CEEC). His group’s research interests relate broadly to the development of electrochemical technologies for clean energy applications. Specific topics of interest include electrocatalysis, photoelectrochemistry/solar fuels, and the use of in situ analytical techniques to study the performance and properties of (photo)electrocatalytic materials at high spatial resolution. Esposito received an NSF CAREER award in 2018 to study electrochemical reactions at the buried interface between ultrathin oxides and electrocatalytic materials. He has also been a co-organizer of four different symposia focused on or closely related to solar fuels over the past four years.

Introduction;

Oxide Coatings for Semiconductor Light Absorbers: Advanced Synthesis and Applications;

Ultrathin Oxides for Solar Cells;

Blocking Layers for Controlling Directional Charge Transport in Dye-sensitized Photoelectrochemical Cells;

Performance Enhancement of TiO2-encapsulated Photoelectrodes Based on III–V Compound Semiconductors;

Metal Oxide Co-catalyst Nanolayers on Photoelectrodes;

Design Principles for Oxide-encapsulated Electrocatalysts;

Synthesis Techniques for Ultrathin Oxide Layers of Heterogeneous Catalysts;

Ultrathin Oxide Coatings Synthesized Via Wet Chemical Processes for Electrocatalytic Systems;

Applications of Metal Oxide Layers on Particulate Photocatalysts for Water Splitting;

Ultrathin Silica Layers as Separation Membranes for Artificial Photosynthesis;

Outlook