Generating Hydrogen on Demand by Splitting Water with Al Rich Alloys
Clean Technology 2008

Generating Hydrogen on Demand by Splitting Water with Al Rich Alloys

J.M. Woodall, J. Ziebarth, C.R. Allen J. Jeon, G. Choi
Purdue University, US

Keywords:
splitting-water, hydrogen, aluminum

Abstract:
Our group has been pioneering the production of on-demand hydrogen using aluminum-gallium alloys to split water into hydrogen, heat, and alumina. Recently, we have found that we can split water on demand using solid alloys of 95 wt% Al, and 5% (Ga,In,Sn). This is both a technological and economic viability breakthrough since the expensive metal component comprises only 5% of the cost. Since pure alumina can be reduced for about $0.30/lb of Al, and the 5% component can reclaimed at $0.05/lb we can show this technology could generate electricity at $0.10/KWhr.