A stainless steel breakthrough could slash the cost of green hydrogen production

University of Hong Kong researchers developed SS-H2, a manganese-assisted stainless steel alloy for low-cost green hydrogen electrolyzers.

The alloy forms a second protective layer under high voltage, staying stable in harsh electrolyzer conditions, including seawater use.

The advance could replace expensive corrosion-resistant parts such as titanium components and cut hardware costs by about 40 times.

Patents have been filed, and early commercialization is already underway.