Hydrogen Compression by Means of Hydrogen Storage Alloys

Abstract

In this paper, hydrogen storage alloys are considered to be a material for hydrogen compression by means of its thermodynamic properties. The hydrogen absorbed in a hydrogen storage alloy at room temperature can be drastically increased with the increase of temperature. Actually, the well known-“van’t Hoff equation” shows that logarithmic value of pressure is depending on the inverse of temperature. Eventually, we have succeeded in the compression from around ambient pressure up to 82 MPa by means of Ti-Cr-V alloy and Ti-Cr-Mn alloy only by the heat below 300°C.