Articles tagged with "green-hydrogen"
Low-cost green hydrogen production possible with new breakthrough
Researchers at Hanyang University ERICA campus in South Korea have developed a new class of cobalt phosphide-based nanomaterials that significantly lower the cost of green hydrogen production. By adjusting boron doping and phosphorus content through metal-organic frameworks (MOFs), the team created catalysts with superior performance and affordability compared to conventional electrocatalysts. These materials exhibit large surface areas and mesoporous structures, enhancing their electrocatalytic activity for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The best-performing sample demonstrated notably low overpotentials of 248 mV for OER and 95 mV for HER, outperforming previously reported catalysts. The innovative synthesis involved growing cobalt-based MOFs on nickel foam, followed by boron doping via sodium borohydride treatment and phosphorization with sodium hypophosphite. Density functional theory (DFT) calculations confirmed that the combination of boron doping and optimized phosphorus content improved interactions with reaction intermediates, driving the enhanced
energygreen-hydrogencatalystsnanomaterialsmetal-organic-frameworkselectrocatalysissustainable-energySelf-healing tech makes cheap green hydrogen without catalysts
Researchers at Seoul National University have developed a novel electrode for water electrolysis that produces green hydrogen without relying on expensive metal catalysts and incorporates a self-healing mechanism. Traditional electrolysis methods use precious metal catalysts that degrade over time, increasing costs and limiting scalability. The new approach uses nickel-based electrodes combined with a technique called dynamic polarization control, which periodically applies a weak reducing voltage to enable trace iron in the electrolyte to reattach and bond with nickel, forming an active oxygen evolution catalyst layer. This process enhances reaction performance and allows the electrode to regenerate itself, significantly improving durability. The team demonstrated over 1,000 hours of stable operation at high current densities and successfully scaled the system to a three-stack cell setup with a 25 sq. cm active area per cell, running for several hundred hours. This catalyst-free, self-healing electrode technology promises a cost-effective and scalable solution for green hydrogen production, supporting Korea’s strategic transition to a hydrogen-based economy aimed at carbon neutrality. The researchers emphasize that their work combines theoretical insights with practical industrial relevance, marking a transformative step toward more economical and sustainable hydrogen energy technologies.
green-hydrogenwater-electrolysisself-healing-electrodecatalyst-free-technologyrenewable-energynickel-electrodeelectrochemical-engineeringScalable method efficiently squeezes hydrogen from seawater
Researchers have developed a novel, scalable method to efficiently produce hydrogen directly from seawater, overcoming longstanding challenges such as corrosion and performance degradation caused by chloride ions. The key innovation is a custom-designed, multi-layered electrode featuring carbonate (CO₃²⁻) Lewis base sites anchored on cobalt layered double hydroxides (Co LDH) embedded within a nickel borate (NiBOx) nanostructure supported by a Ni(OH)₂/NF microarray. This structure creates a protective microenvironment that resists chloride-induced corrosion by forming a metaborate film, preventing metal dissolution and non-conductive oxide formation, thereby enhancing durability and efficiency in saline conditions. The electrode achieves an industrially relevant current density of 1.0 A cm⁻² at 1.65 V under standard conditions without requiring desalination or chemical additives, marking a significant advance toward sustainable, large-scale green hydrogen production. The carbonate-functionalized Co sites facilitate continuous water splitting and localized acidification, which improves oxygen evolution reaction kinetics and protects against chloride attack. This technology holds particular promise for arid coastal regions like the UAE, where abundant seawater and sunlight but limited freshwater resources could enable solar-powered hydrogen farms, potentially revolutionizing hydrogen production by reducing reliance on freshwater and energy-intensive desalination processes.
energyhydrogen-productionseawater-electrolysisgreen-hydrogencorrosion-resistancenanostructured-electrodesrenewable-energyMIT turns seawater, soda cans into 90% cleaner hydrogen fuel
hydrogenclean-energysustainable-technologyaluminum-recyclingcarbon-footprintgreen-hydrogenrenewable-energyFortescue Determined to Decarbonise International Shipping - CleanTechnica
energydecarbonisationgreen-hydrogenammonia-fuelshipping-emissionsrenewable-energymaritime-technologySAF Startup To Leverage Green Hydrogen And Captured Carbon
energygreen-hydrogencarbon-capturesustainable-aviation-fuelrenewable-energybiomasselectrofuelsSAF Takes Off & Ticket Prices Follow: The Real Cost Of Greener Air Travel
energysustainable-aviation-fueldecarbonizationelectric-aviationcarbon-emissionsaviation-industrygreen-hydrogenThe Geopolitics Of Critical Minerals: China’s Grip & The West’s Response
energycritical-mineralsdecarbonizationrenewable-energyindustrial-policiesgreen-hydrogenbattery-technologies