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RIKEN in Japan has developed a new type of long-lasting catalyst for hydrogen production.
Release time:
2025-11-07
Japan's RIKEN Develops New Long-Lasting Catalyst for Hydrogen ProductionIn a recent study published in the journal Nature Catalysis, researchers from the RIKEN Center for Sustainable Resource Science (CSRS) in Japan have improved the method for producing clean hydrogen fuel from water. They have developed a new catalyst with a lifespan extended by more than 40 times, paving the way for a more sustainable hydrogen economy.
The research, led by Ryuhei Nakamura of RIKEN-CSRS, outlines how the team manipulated the three-dimensional lattice structure of the catalyst to enhance its stability and longevity. The new catalyst is a form of manganese oxide (MnO₂). The 3D lattice structure of manganese oxide contains two different types of oxygen: planar oxygen and pyramidal oxygen. The researchers discovered that increasing the proportion of planar oxygen within the lattice significantly improved catalytic stability, as the bonds formed between planar oxygen and manganese are stronger.The researchers tested four variations of manganese oxide with different proportions of planar oxygen. When the proportion of planar oxygen reached a maximum of 94%, the material could sustain the crucial oxygen evolution reaction in an acidic environment at 1000 mA/cm² for one month, transferring 100 times more total charge than observed in other studies.
When tested in a PEM electrolyzer, water electrolysis could be sustained for approximately six weeks at 200 mA/cm². During this period, the total volume of water electrolyzed, and consequently the amount of hydrogen produced, was ten times greater than previously achieved with other non-precious metal catalysts.Although more work remains, and industrial applications typically require maintaining a stable current density of 1000 mA/cm² for years rather than a month, the researchers remain optimistic that practical, viable applications will eventually become feasible, thereby contributing to achieving carbon neutrality.
Hydrogen Production,Sustainable Hydrogen Production,New-style Hydrogen Production,PEM Electrolyzer,PEM Electrolyzer Water Electrolysis,Hydrogen Fuel Cell
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