Water-splitting, solar, self-contained, photosynthesis, water oxidation catalyst, electrolytic deposition, electrolysis
Solar energy storage
Need for an inexpensive catalytic material for electrolyzers that operates under chemically neutral conditions
This invention describes a new approach for forming the Co-Pi catalyst with silicon substrate, forming the final ITO/Si/Co/Co-Pi photoanode structure for photoelectrochemical cells. It is achieved from solutions of only KPi (pH 7) through use of the cobalt metal thin-film electrode as the Co2+ cation source. The invention also shows that such an integration of a silicon photoanode and a catalytic material for water oxidation improves the light-assited catalytic activity and lowers applied potentials necessary to achieve water oxidation.
PCT Patent Application PCT/US2011/48424, filed August 19, 2011
US Utility Patent Application 13/213690, filed August 19, 2011
Last revised: May 2, 2012