With the daily mean concentrations of atmospheric carbon dioxide having reached 400 parts-per-million for the first time in human history, the need for carbon-neutral alternatives to fossil fuel energy has never been more compelling. With enough energy in one hour’s worth of global sunlight to meet all human needs for a year, solar technologies are an ideal solution. However, a major challenge is to develop efficient ways to convert solar energy into electrochemical energy on a massive-scale. A key to meeting this challenge may lie in the ability to test such energy conversion schemes on the micro-scale.
Berkeley Lab researchers, working at the Joint Center for Artificial Photosynthesis(JCAP), have developed the first fully integrated microfluidic test-bed for evaluating and optimizing solar-driven electrochemical energy conversion systems. This test-bed system has already been used to study schemes for photovoltaic electrolysis of water, and can be readily adapted to study proposed artificial photosynthesis and fuel cell technologies.
“We’ve demonstrated a microfluidic electrolyzer for water splitting in which all functional components can be easily exchanged and tailored for optimization,” says Joel Ager, a staff scientist with Berkeley Lab’s Materials Sciences Division. “This allows us to test on a small scale strategies that can be applied to large scale systems.”
Ager is one of two corresponding authors of a paper in the journal Physical Chemistry Chemical Physics (PCCP) titled “Integrated microfluidic test-bed for energy conversion devices.” Rachel Segalman, also with Berkeley Lab’s Materials Sciences Division is the other corresponding author. Other co-authors are Miguel Modestino, Camilo Diaz-Botia, Sophia Haussener and Rafael Gomez-Sjoberg.
Read more at: Phys.org