The Raman spectra of elemental carbon materials are sensitive to polymorphy. It is possible to band-fit the spectra of amorphous and diamond-like carbons for hard carbon films to decouple the ...

The green hydrogen revolution, central to renewable energy development and decarbonization, is increasingly scrutinized through two critical lenses: cost and carbon intensity. Hydrogen production ...

Twelve colors and counting. The terminology associated with hydrogen—specifically, the use of color descriptors such as green, blue and gray—has become widespread in discussions about renewable energy ...