Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.312
Publication date: 18th December 2023
High power density devices are required for economically competitive and sustainable solar fuel devices. I will review our solar hydrogen demonstrations at high current density and based on thermally integrated photo-electrochemical approaches. I will show how the design evolved when moving from lab-scale, to system-scale, and to industrial scale [1]. I will comment on the indoor experimental conditions compared to outdoor experiments. I will show how the thermal-integration principle can be extended for CO2 reduction devices [2] and for reversibly operated devices (forward mode for hydrogen generation, backward mode for power generation). I will show how indoor experiments with high-flux solar simulators can be used for the performance assessment of such devices, including the assessment of longevity and degradation [3]. I will end with the introduction of a novel design concept for photocatalytic solar fuel generation based on droplets. I will show how such drop-based system con provide a continuously operating system with high throughput and competitive production rates.