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Tuning Electrode Surfaces to Optimize Solar Fuel Production
An electrode material with modified surface atoms generates more electrical current, which drives the sunlight-powered reactions that split water into oxygen and hydrogen a clean fuel
February 18, 2021
Through a tight coupling of experiment and theory, scientists showed at the atomic level how changes in the surface composition of a photoelectrode play a critical role in photoelectrochemical performance.
UPTON, NY Scientists have demonstrated that modifying the topmost layer of atoms on the surface of electrodes can have a remarkable impact on the activity of solar water splitting. As they reported in
Nature Energy on Feb. 18, bismuth vanadate electrodes with more bismuth on the surface (relative to vanadium) generate higher amounts of electrical current when they absorb energy from sunlight. This photocurrent drives the chemical reactions that split water into oxygen and hydrogen. The hydr ....

United States , Mingzhao Liu , Giulia Galli , Kyoung Shin Choi , Chenyu Zhou , Wennie Wang , Dongho Lee , Catalysis Group Of The Center , Galli Group , Nature Energy On Feb , National Science Foundation , Us Department Of Energy , University Of Wisconsin , Stony Brook University , Catalysis Group , Choi Group , Office Of Science , University Of Chicago , Argonne National Laboratory , University Of Chicago Research Computing Center , Brookhaven National Laboratory , Tuning Electrode Surfaces , Optimize Solar Fuel , Nature Energy , Interface Science , Functional Nanomaterials ,