Water Electrolysis
Articles tagged with Water Electrolysis
Escaping the bubble trap: Plant-inspired 3D electrodes unlock ultra-fast hydrogen production
Researchers have developed a 3D electrode inspired by an aquatic plant, which captures and transports gas bubbles to increase hydrogen production. The design achieved a current density eight times higher than common flat electrodes, collecting 53.9% more hydrogen.
Membrane electrode assembly design for high-efficiency anion exchange membrane water electrolysis
Researchers developed three advanced strategies to create ordered membrane electrode assemblies for high-efficiency anion exchange membrane water electrolysis. The first strategy uses nanoimprinting, while the second employs integrated membrane electrodes. The third strategy leverages 3D interlocked interfaces, achieving exceptional pe...
Global impact: University of Houston researchers again named to prestigious Highly Cited list
Two University of Houston scientists, Zhifeng Ren and Yan Yao, have been named Highly Cited Researchers by Clarivate's program for their significant scientific influence in energy research. Their work has led to transformative discoveries and innovations in superconductivity and energy storage.
Lead-acid battery inspired catalyst design: Pb doped RuIrOx for efficient and durable acidic oxygen evolution in proton exchange membrane electrolyzers at 3 A/cm2
Researchers developed a novel lead-doped ruthenium-iridium oxide catalyst for oxygen evolution reactions in proton exchange membrane water electrolyzers, surpassing commercial IrO₂ and RuO₂ electrodes. The catalyst enables efficient and durable operation at high current densities, reducing precious metal consumption.
Novel electrode could improve affordability of hydrogen fuel
A new anion-exchange-membrane water electrolyzer technology has been developed to address the degradation issue in membrane electrolyzers. This innovation combines the efficiency of simple caustic or alkaline electrolytes with the low-cost material advantages of solid polymer membranes.
Purine-modified platinum electrodes could cut hydrogen costs
Researchers from Chiba University have discovered a way to reduce platinum requirements in water electrolysis by adding purine bases, increasing hydrogen evolution reaction activity by 4.2 times. This development could make hydrogen production far more affordable and lead to cost reductions and improved energy conversion efficiency.
Chung-Ang University develops chloride-resistant Ru nanocatalysts for sustainable hydrogen production from seawater
Researchers developed chloride-resistant Ru nanocatalysts to overcome limitations in seawater electrolysis. The g-C3N4-mediated pyrolysis strategy creates a crystalline-amorphous junction with ultrafine Ru dispersion, enabling efficient and durable hydrogen production.
Hydrogen from solar heat: who wins the race?
A team of researchers has discovered a novel oxide material that can produce high-efficiency clean hydrogen using only heat. The discovery was made possible by a new computational screening method and has the potential to transform industries such as methane reforming and battery recycling.
Oven-temperature process (~300℃) boosts catalyst performance sixfold
Researchers developed a new method to activate water-splitting catalysts at an oven temperature of just 300 °C, boosting oxygen evolution efficiency by nearly sixfold. This breakthrough enables large-scale energy storage and conversion using solar and wind power.
Using alcohol to reduce the costs of industrial water electrolysis
Researchers investigate hybrid water electrolysis (HWE) as a promising pathway to lower the cost of green hydrogen production and co-generate valuable products. They examine current state-of-the-art in HWE, including electrooxidation of alcohols, selectivity, circularity, and reactor design.
A little salt is good for battery health
Scientists at KAUST discovered how free water compromises battery life and performance, but also found a solution with affordable salts like zinc sulfate. The study showed that sulfate reduces the amount of free water in batteries, increasing their lifespan by more than ten times.
Unlocking the oxygen transport challenges in PEM fuel cells and water electrolysis
Researchers from Shanghai Jiao Tong University develop innovative solutions to enhance performance and reduce costs in PEM fuel cells and water electrolysis. The study addresses critical oxygen transport challenges, paving the way for high-performance, low-cost hydrogen technologies.
SNU researchers develop long-lasting water electrolysis operation technology without pre-synthesized catalysts
Researchers at Seoul National University have developed a novel water electrolysis operation strategy that can produce green hydrogen without complex catalyst manufacturing processes. The 'Electrochemical Activation' method allows for high-efficiency and long-lasting hydrogen production using commercial nickel electrodes, eliminating t...
An iron oxide ‘oxygen sponge’ for efficient thermochemical hydrogen production
Researchers at Pohang University of Science & Technology have developed a novel iron-based catalyst that more than doubles the conversion efficiency of thermochemical green hydrogen production. The new catalyst, iron-poor nickel ferrite (Fe-poor NiFe2O4), enables significantly greater oxygen capacity even at lower temperatures.
Amorphous Ni-Fe Oxide: A high-performance, low-cost OER electrocatalyst for AEMWEs
Researchers developed amorphous Ni-Fe mixed oxides using sol-gel method to enhance oxygen evolution reaction (OER) activity and operational durability in anion exchange membrane water electrolyzers (AEMWEs). The material demonstrated optimal OER performance, achieving a low overpotential of 291 mV and remarkable stability.
Artificial oxygen supply in coastal waters: A hope with risks
Researchers warn that artificial oxygen input cannot replace comprehensive water protection strategies. Technical approaches have shown promise, but risks include intensifying greenhouse gases and disrupting marine habitats. Climate protection and reducing nutrient inputs remain crucial for mitigating ocean oxygen loss.
Scientists develop novel strategy to enhance water oxidation catalysis
A research team developed a novel strategy to balance high catalytic activity and durability under industrial-level conditions. They constructed a MOF@POM superstructure that undergoes an in-situ transformation into a single-layer CoFe hydroxide catalyst, exhibiting exceptional performance in alkaline electrolytes.
Green hydrogen: A cage structured material transforms into a performant catalyst
A new class of materials, clathrates, has been discovered as electrocatalysts for oxygen evolution reaction in green hydrogen production. The Ba₈Ni₆Ge₄₀ material transformed into ultrathin Nickel-sheets under an electric field, increasing catalytic activity and stability.
Potable water happy byproduct of low-cost green hydrogen technology
A Cornell University-led collaboration has developed a low-cost method to produce carbon-free 'green' hydrogen via solar-powered electrolysis of seawater. The process produces 200 milliliters of hydrogen per hour with 12.6% energy efficiency directly from seawater under natural sunlight.
Chemical water-assisted electrolysis: a new frontier for clean hydrogen production
Chemical water-assisted electrolysis is a promising solution for producing clean hydrogen without CO2 emissions. The technology produces hydrogen at low voltage by substituting the water oxidation reaction with various chemical oxidation reactions.
SNU researchers develop an electrochemical catalyst for high-efficiency, low-cost, and eco-friendly hydrogen production
Researchers at Seoul National University have developed a novel core-shell nanocluster catalyst that significantly improves the efficiency of hydrogen production while reducing costs. The new catalyst features a ruthenium-based nanocluster with exceptional stability and performance, making it suitable for commercial applications.
Researchers develop chainmail integrated-electrode for highly efficient hydrogen sulfide electrolysis
A new electrode structure enhances catalytic activity and durability, achieving high-efficiency hydrogen production via H2S electrolysis. The system reduces energy consumption by 43% compared to conventional water electrolysis.
Gd-induced oxygen vacancy activates lattice oxygen oxidation for water electrolysis
Researchers at Tohoku University found that incorporating gadolinium into iron-doped nickel oxide markedly enhances oxygen evolution reaction activity. Gd-doping reduces theoretical overpotentials and demonstrates favorable kinematics, leading to remarkable long-term stability and robust performance in water electrolysis.
Rational design of precatalysts for efficient hydrogen production
Researchers at Tohoku University developed a highly stable catalyst for efficient hydrogen production, achieving a Faradaic efficiency of 99.9% and stability for over one month. The study highlights the importance of controlled evolution of catalyst-electrolyte interface in rational catalyst design.
Aluminum: A new hero of hydrogen production
A POSTECH research team has developed a new catalyst using aluminum, improving the performance of hydrogen production in alkaline water electrolysis by approximately 50%. The aluminum catalyst maintained high current density and excellent stability, making it suitable for large-scale hydrogen production.
New water splitting catalysts make green hydrogen without expensive metals
Researchers from ANEMEL have developed highly stable anion exchange membrane electrolysers that can produce hydrogen without using platinum-group catalysts. The new technology surpasses state-of-the-art solutions in performance and long-term stability, holding promise for industrial applications.
New filter captures and recycles aluminum from manufacturing waste
MIT engineers developed a nanofiltration process to capture aluminum ions from cryolite waste, reducing hazardous waste and improving efficiency. The membrane selectively captured over 99% of aluminum ions, enabling the recovery of aluminum and reducing the need for new mining.
Less is more: Why an economical Iridium catalyst works so well
Researchers at HZB developed a new P2X catalyst requiring less iridium than commercial materials, showing remarkable stability and different mechanisms for oxygen evolution. The study provides valuable information about catalyst performance and stability.
Researchers: If Power-to-X is to be a real climate solution, the state needs to use the stick
A study by University of Copenhagen researchers highlights the challenges in investing in green hydrogen projects, citing market risks, regulatory uncertainty, and high costs. Oil and gas companies are better positioned to finance large-scale hydrogen projects due to their expertise and infrastructure.
Hydrogen: Breakthrough in alkaline membrane electrolyzers
Researchers have developed a highly efficient alkaline membrane electrolyser that approaches the performance of established PEM electrolysers. The use of inexpensive nickel compounds replaces costly and rare iridium, leading to significant advancements in understanding fundamental catalysis mechanisms.
Mechanism of cobalt-manganese catalysts deciphered
Researchers deciphered the role of manganese in cobalt-manganese catalysts, which have a high activity and stability over time. The catalysts' surface transforms during the reaction, with manganese dissolving and redepositing, leading to improved performance.
Green hydrogen: MXenes shows talent as catalyst for oxygen evolution
Researchers have found that MXene catalysts are more stable and efficient than metal oxide compounds for the oxygen evolution reaction. The discovery holds promise for developing low-cost, high-performance electrolysers for producing green hydrogen.
Green hydrogen: ‘Artificial leaf’ becomes better under pressure
Researchers at HZB have increased the efficiency of photoelectrochemical cells by operating them under elevated pressure. This reduces losses due to bubble formation and improves light illumination, resulting in a relative increase of 5-10 percent in overall efficiency. The optimal operating pressure range is between 6-8 bar.
Green hydrogen from direct seawater electrolysis- experts warn against hype
Direct seawater electrolysis is not necessary for green hydrogen production, as a simple desalination process can prepare seawater for conventional electrolysers. The development of new types of electrolysers that can operate steadily in seawater would only save the cheap purification step.
Maximizing hydrogen peroxide formation during water electrolysis
Researchers from Ruhr University Bochum elucidate the mechanism of hydrogen peroxide formation in water electrolysis by adding carbonates. The presence of hydrogen carbonate in the electrode vicinity facilitates the production of hydrogen peroxide, reducing unwanted oxygen formation.
Producing hydrogen and fertilizer at the same time
A research team at Ruhr University Bochum has developed a catalyst that can convert ammonia into hydrogen and nitrite, producing both a clean energy carrier and a fertilizer precursor simultaneously. The process doubles the hydrogen yield while minimizing nitrogen production.
Could lead overcome reverse current and advance a green hydrogen economy?
A new catalyst with a lead coating enhances the performance of a nickel-based hydrogen evolution reaction catalyst, increasing efficiency and resisting reverse current. This breakthrough could improve the durability of alkaline water electrolysis systems and support a green hydrogen economy.
Researchers move closer to green hydrogen via water electrolysis
A Northwestern University study reveals the experimental evidence for how the surface of iridium oxide changes during water electrolysis, enabling the design of a novel catalyst with higher activity and longer stability. The new catalyst is three to four times more efficient than existing iridium-based catalysts.
New catalyst unveils the hidden power of water for green hydrogen generation
Scientists develop novel catalyst using cobalt-tungsten oxide, achieving stability in acid media without iridium. This breakthrough offers scalable alternatives to conventional catalysts, enabling industrial applications.
Manganese sprinkled with iridium: a quantum leap in green hydrogen production
Researchers at RIKEN have developed a new catalyst that reduces the amount of iridium required for hydrogen production, achieving 82% efficiency and sustaining production for over 4 months. The breakthrough could revolutionize ecologically friendly hydrogen production and pave the way for a carbon-neutral energy economy.
The Clues for Cleaner Water
Researchers at Pitt and Drexel have discovered that electrocatalysts can promote chemical reactions that generate ozone in water through corrosion and solution phase reactions. This breakthrough could lead to the development of more efficient and sustainable electrochemical ozone production technologies.
Longer-lasting and more sustainable green hydrogen production
Researchers at RIKEN have improved the stability of a green hydrogen production process by using a custom-made catalyst, increasing its lifetime by almost 4,000 times. The breakthrough uses earth-abundant materials, making it more sustainable and potentially cost-effective for widespread industrial use.
Operando spectroscopy provides a window on water oxidation
Researchers used operando spectroscopy to study the oxygen evolution reaction in iridium oxide catalysts. The team found that binding of reaction intermediates to the electrode was controlled by long-range interactions between the intermediates and the solution, which depended on pH.
“Find pearls in the soil” unveiling the magic of hydrogen production from municipal sewage
Researchers at Pohang University of Science & Technology created a novel catalyst that enhances the efficiency of reactions using contaminated municipal sewage to produce hydrogen. The catalyst, called nickel-iron-oxalate (O-NFF), successfully lowers the voltage required for hydrogen generation and promotes the urea oxidation reaction.
New hydrogen producing method is simpler and safer
A new hydrogen-producing method splits water into oxygen and hydrogen without mixing the gases, reducing the risk of explosions. The decoupled electrolyzer system uses a supercapacitive electrode to separate the gases, eliminating the need for rare Earth metals.
Groundbreaking discovery enables cost-effective and eco-friendly green hydrogen production
A new bifunctional water electrolysis catalyst made from ruthenium, silicon, and tungsten enables the efficient production of high-purity green hydrogen. The catalyst demonstrates exceptional durability in acidic environments, making it an attractive alternative to traditional precious metal catalysts.
Efficiently moving urea out of polluted water is coming to reality
Researchers at Worcester Polytechnic Institute have developed a material to selectively oxidize urea in water, producing hydrogen gas. The material, made of nickel and cobalt atoms with tailored electronic structures, enables the efficient conversion of urea into hydrogen through an electrochemical reaction.
GIST researchers improve water splitting reaction for green hydrogen gas production
Researchers from GIST have developed a new electrode using Schottky junctions to overcome the conductance limit of active catalysts, achieving high-performance water splitting and hydrogen evolution reactions. The electrode demonstrated remarkable current density and durability during continuous operation for 10 days.
From CO2 to green chemicals—researchers are one step closer
An international team at DTU has increased the durability of CO2 electrolyzers, enabling the conversion of captured CO2 into valuable green chemicals like ethylene and ethanol. The breakthrough could play a significant role in the green transition by reducing global CO2 emissions
WVU engineers study how to pull carbon out of building air to make methanol
Researchers at West Virginia University have developed a technology that can capture carbon dioxide from the air of buildings and use it to produce methanol, a common chemical with numerous applications. The process is expected to increase the sustainable supply of methanol while removing greenhouse gases from the atmosphere.
CityU achieves major breakthrough in highly efficient electrocatalyst for clean energy
A research team at City University of Hong Kong has developed a highly efficient electrocatalyst that enhances hydrogen generation through electrochemical water splitting. The catalyst, composed of transition-metal dichalcogenide nanosheets with unconventional crystal phases, exhibits superior activity and stability in acidic media.
Gwangju Institute of Science and Technology researchers design efficient iridium catalyst for hydrogen generation
Researchers at Gwangju Institute of Science and Technology have developed a novel mesoporous tantalum oxide-supported iridium nanostructure catalyst for efficient proton exchange membrane water electrolysis. The catalyst exhibits improved oxygen evolution reaction activity, stability, and cost-effectiveness.
Gwangju Institute of Science and Technology researchers develop highly efficient organometal halide perovskite photoelectrodes for water splitting
Researchers have developed a highly efficient organometal halide perovskite photoanode that suppresses internal and external losses associated with photoelectrochemical water splitting, enhancing reaction kinetics. The new design achieves an unprecedented applied bias photon-to-current conversion efficiency of 12.79%.
Mussel-inspired membrane can boost sustainability and add value to industrial wastewater treatment
Engineers have developed a new membrane that separates chemicals from wastewater, allowing for reuse and extraction of valuable by-products. The membrane's unique properties, inspired by mussels, can separate salts and other chemical components with unprecedented efficiency.
Highly active catalyst for alkaline water electrolysis using typical elements
The study introduces a highly active catalyst for alkaline water electrolysis using typical elements, including rhombohedral boron monosulfide complexed with graphene nanoplatelets. This novel material exhibits high catalytic activity for oxygen evolution reactions, paving the way for sustainable hydrogen production.
Solar hydrogen: Barriers for charge transport in metal oxides
Researchers investigated the diffusion lengths of charge carriers in metal oxides and found that they are poorly understood. The study analyzed ten metal oxide compounds and found that their mobilities were very low compared to conventional semiconductors. However, heat treatment improved mobility in some materials.
BESSY II: What drives ions through polymer membranes
A team of scientists discovered that ions transfer through polymer membranes in hybrid liquid-gas electrolyzers via diffusion, not electromigration. This finding has significant implications for the development of more efficient and environmentally friendly energy technologies.
Theory's predictive power: Creating effective and low-cost rare-earth element based catalysts
Researchers have identified and fabricated a new electrocatalyst using theoretical predictions, significantly improving the oxygen evolution reaction. The discovery uses cerium-doped cobalt oxide to achieve an overpotential of only 261 mV at 10 mA cm−2, outperforming individual cobalt oxide.
New recipes for better solar fuel production
A team of researchers from China and the UK has developed new ways to optimise the production of solar fuels by creating novel photocatalysts. These photocatalysts, such as titanium dioxide with boron nitride, can absorb more wavelengths of light and produce more hydrogen compared to traditional methods.