A team led by Cornell University has managed to design a compact device that generates green hydrogen and potable water from solar radiation and seawater, without the need for external sources of energy or purified water.
This development, based on HSD-WE (Hybrid Solar Distillation–Water Electrolysis) technology, represents a significant step towards clean and decentralized energy solutions, with potential impact in areas facing water scarcity.
How does this clean and efficient innovation work?
The device, only 10 × 10 centimeters in size, combines photovoltaic panels and a solar distillation system to generate hydrogen and potable water from a thin layer of seawater.
- Produces 200 ml of hydrogen per hour with an efficiency of 12.6%.
- Utilizes residual heat to evaporate water, which is then distilled using capillary wicks, without the need to heat large volumes.
- The desalinated steam is condensed and sent to an electrolyzer, where it is separated into oxygen and hydrogen.
The result is green energy and salt-free water, all in a compact, autonomous, and scalable system.
A solution to the high costs of green hydrogen
Currently, producing green hydrogen requires large volumes of purified water, which increases the cost up to ten times compared to conventional hydrogen.
This new system avoids that barrier by using seawater, a virtually inexhaustible resource, opening the door to a more accessible and sustainable production.
Clean energy for a world in need of solutions
In addition to generating emission-free energy, this device offers a potential solution to the global crisis of access to potable water, especially in coastal or rural regions without centralized infrastructures.
This advancement positions solar energy and clean technology as pillars of a more resilient future, demonstrating that innovation and sustainability can go hand in hand.
