International Journal of Applied Science and Technology

ISSN 2221-0997 (Print), 2221-1004 (Online) 10.30845/ijast

Electric Energy Storage Using Aluminum and Water for Hydrogen Production On-Demand
Shani Elitzur, Valery Rosenband, Alon Gany

The paper analyzes the potential electric energy storage resulting from a hydrogen-oxygen fuel cell fed by in-situ, on-demand production of hydrogen from aluminum-water reaction. The reaction is made practical by an original aluminum activation process using a small fraction (typically 1-2.5wt%) of lithium-based activator. The reaction provides 11% of hydrogen compared to the aluminum mass, with a practical yield of over 90%, which is equivalent to about 2200 Wh/kg Al of electric energy storage when combined with a fuel cell. It is shown that specific electric energy greater by up to 15 fold compared to common batteries may be obtained, depending on the specific application and operating time.

Full Text: PDF