Electrolysis

A kilogram of hydrogen holds 39.4 kWh of energy, but typically costs around 52.5 kWh of energy to create. Hysata says its capillary-fed electrolyzer cell slashes that energy cost to 41.5 kWh, smashing efficiency records and lowering green H2 prices.

Electrolysis is a key component of the cost of green hydrogen, and a Korean team says it's made a huge breakthrough with an anion exchange membrane that's not only cheaper than current proton exchange tech, but offers some 20 percent better performance.

Combining two forms of sustainable energy into one, Swiss Sustainable Yachts' Aquon One catamaran harnesses solar energy to create its own hydrogen, powering a fuel cell drive to potentially limitless autonomy.

Germany's Svevind has announced plans for a colossal green hydrogen project that will place some 45 gigawatts of wind and solar energy generation on the vast steppes of Kazakhstan to produce around three million tonnes of green hydrogen annually.

Although ozone is used to disinfect water in settings such as treatment plants, the required equipment is typically too large for use in small appliances like water coolers. A new miniaturized ozone generator, however, may be about to change that.

Weight is a premium on space launches, so the less we have to take with us, the better. Now engineers have developed a new electrolysis device that may be able to convert very salty Martian water into breathable oxygen and hydrogen for fuel.

Engineers at the University of Liverpool have developed a robot scientist that can autonomously perform experiments, analyze results and decide what to do next based on those results – and it’s already making new discoveries on its own

Researchers at Rice University have built a simple new solar-powered device that can create hydrogen for fuel by splitting water. It's similar to other “artificial leaf” designs but the team says it’s self-sufficient and relatively cheap to produce.

Australian scientists claim they've worked out a much cheaper, more efficient way to split hydrogen out of water, using easily sourced iron and nickel catalysts. The discovery could greatly improve the equation for "green" hydrogen.

Making cement is one of the biggest contributors of carbon emissions. Now MIT researchers have developed a new method that can clean up the process.

Zapping hydrogen out of water through electrolysis is the cleanest way to produce the fuel, but that requires rare-Earth metal catalysts. Researchers have now developed a quick and inexpensive alternative, making a “nanofoam” catalyst out of nickel and iron that performs better than usual.

Clean and plentiful, hydrogen is a promising fuel source, but there are a few problems in the path to mainstream use. South Korean scientists have now developed a new system for producing hydrogen from water, which that they say overcomes some of these issues and produces the gas more efficiently.