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Researchers at SLAC National Accelerator Laboratory, Stanford University, and collaborators have developed a novel double-membrane system to extract hydrogen gas from seawater, offering a more sustainable approach to hydrogen production without toxic byproducts. Traditional methods rely on freshwater or desalinated water, which are expensive and energy-intensive. In their study, detailed in the journal Joule, the scientists utilized a bipolar membrane system coupled with electrolysis to separate hydrogen from seawater. This system effectively mitigates the harmful chloride ions, which can interfere with the electrolysis process and produce toxic byproducts like chlorine and bleach.
By allowing protons (hydrogen ions) to pass through one membrane while restricting harmful ions, the researchers achieved efficient hydrogen production. Their innovations not only improve the understanding of ion movement through membranes but also hold promise for producing oxygen. Going forward, the team aims to enhance their membrane and electrode materials to facilitate larger-scale hydrogen production, potentially for sectors such as transportation. The research underscores optimistic prospects for green hydrogen technologies, paving the way for advancements in sustainable fuel solutions.
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