Vol.23 No. 3

Mastering Hydrogen

How far have we come in harnessing hydrogen energy?

Hydrogen energy holds the key to achieving a decarbonized society. To realize large-scale hydrogen supply, technological breakthroughs are needed in three critical areas: producing hydrogen through water electrolysis, storing and transporting it in liquefied form, and using it safely and efficiently.

At the heart of these innovations lies materials science.
The properties of materials can significantly affect both the efficiency and safety of hydrogen production, liquefaction, and storage.
Despite its promise as a clean energy source, hydrogen poses a unique risk to materials—embrittlement.

At NIMS, we are tackling these challenges head-on, conducting research across every stage of the hydrogen cycle—production, storage, and utilization—to minimize risks and fully leverage the power of materials. NIMS continues to take on the challenge of building a hydrogen society by integrating knowledge and technology.

The monochrome images (bottom) compare the hydrogen-charged and uncharged specimens. In both, disrupted crack paths (indicated by yellow arrows) are visible; however, the cracks propagate more continuously in hydrogen-charged material. Dr. Shibata focused on areas where cracks unexpectedly stopped, despite high hydrogen content, and closely examined the surrounding microstructure. This led to insights that may inform microstructural design strategies to suppress crack propagation. (Column | Overcoming Hydrogen Embrittlement: A Thorough Investigation into Fracture Mechanisms )

Research Highlights

Features