Hydrogen production using AlGaInSn alloy with semi-solid structures

Semi-solid AlGaInSn bulk was fabricated for hydrogen production by Al-water reaction, of which the semi-solid structure was characterized by near-sphere primary phases dispersed within active metals enriched fine secondary-solidification-structures. The unique structure gives rise to a dramatic hydrogen production compared with the cast counterpart, although uneven throughout the whole bulk and hard to control. The underlying mechanism is demonstrated that owing to the fracturing of the secondary-solidification-structures into fine particles the semi-solid outperforms the cast largely initially and gradually hydrolyzing of primary phases then maintains the advance in the rest period.