Researchers from the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) along with international collaborators have brought us one step closer to harnessing the sun’s energy to convert carbon dioxide into liquid fuel and other valuable chemicals. In a recent publication in Nature Catalysis, the researchers debut a self-contained carbon-carbon (C2) producing system that combines the catalytic power of copper with perovskite, a material used in photovoltaic solar panels. This advance builds on over 20 years of research and brings the scientific community one step closer to replicating the productivity of a green leaf in nature. 

This work is part of a larger initiative, the Liquid Sunlight Alliance (LiSA), which is a Fuels from Sunlight Energy Innovation Hub funded by the U.S. Department of Energy. Led by Caltech in close partnership with Berkeley Lab, LiSA brings together more than 100 scientists from national lab partners at SLAC and the National Renewable Energy Laboratory, and university partners at UC Irvine, UC San Diego, and the University of Oregon. Researchers involved in this multi-institutional collaboration have made advances in developing our understanding of and the tools needed to develop liquid fuels generated from sunlight, carbon dioxide, and water. (Learn more about the LiSA collaboration in this roundup, “Five Ways LiSA is Advancing Solar Fuels.”)

“Nature was our inspiration,” said Peidong Yang, a senior faculty scientist in Berkeley Lab’s Materials Sciences Division and UC Berkeley professor of chemistry and materials science and engineering involved in the published work. “We had to work on the individual components first, but when we brought everything together and realized that it was successful, it was a very exciting moment.” 

To build a system that mimics photosynthesis, Yang a