Photoelectrosynthetic reactor for green hydrogen production

A photoelectrochemical reactor designed and fabricated from ABS using 3D printing with geometric simplicity and modular assembly is presented, which facilitates flexible scaling and easy adaptation to diverse experimental configurations. It is specifically intended for the evaluation of photoelectrodes aimed at green hydrogen production through water photoelectrolysis. The system displays a dual-compartment configuration separated by a gas-selective membrane, enabling precise characterization of PEC (photoelectrochemical cell) devices. The proof of concept demonstrates the functionality of reactor under laboratory conditions, reaching a current Technology Readiness Level (TRL) between 3 and 4, with ongoing development toward higher TRLs through materials optimization and extended stability testing. The reactor represents a promising approach due to its low cost, scalability, compact integration, and potential to enable future solar-powered hydrogen production. Its accessible design makes it particularly suitable for educational environments and training in solar fuel technologies. With a realistic pathway for scaling to higher TRLs, the system serves as a flexible platform for continued innovation. Furthermore, its compact and energy-efficient configuration positions it as a reliable candidate for future integration with autonomous solar setups, supporting decentralized hydrogen generation.