Improvement Parameters of Hydrogen Generation from Water under Stainless-Steel-Mediated Ball Milling Conditions

Mechanochemical energy derived from the collision and friction among stainless-steel (SUS304) balls and a vessel by a planetary ball mill machine effectively facilitated H2 generation from H2O. The number and size of the balls significantly affected the H2 generation efficiency. Additionally, the change in the crystal structure of the stainless-steel between the austenite and martensite states was also an important factor in improving the H2 generation efficiency.