Hydrogen Production Using Photoelectrochemical Water Splitting

Another promising option for the long term is photoelectrolysis. Here, light shining on a photoelectrochemical cell immersed in water produces bubbles of hydrogen and oxygen.
01443 Hydrogen Production Using Photoelectrochemical Water Splitting
In this process, hydrogen is produced from water using sunlight and specialized semiconductors called photoelectrochemical materials. In the photoelectrochemical (PEC) system, the semiconductor uses light energy to directly dissociate water molecules into hydrogen and oxygen. Different semiconductor materials work at particular wavelengths of light and energies.

Research focuses on finding semiconductors with the correct energies to split water that are also stable when in contact with water. Photoelectrochemical water splitting is in the very early stages of research, but offers long-term potential for sustainable hydrogen production with low environmental impact.

Potential Designs for Photoelectrochemical Water-Splitting Systems

Single PEC Slurry-Phase Reactor System for Water Splitting

single reactor Hydrogen Production Using Photoelectrochemical Water Splitting


Dual Photosystem Slurry-Phase Reactor System for Overall Water Splitting (Br3- Transfer Ion Example)

dual reactor Hydrogen Production Using Photoelectrochemical Water Splitting


Photoelectrode System Block Diagram

photoelectrode system Hydrogen Production Using Photoelectrochemical Water Splitting


Photoelectrode Reactor Schemes

photoelectrode reactor schemes Hydrogen Production Using Photoelectrochemical Water Splitting

Source :EERE

Content Last Updated: 12/11/2007

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