Characteristics of activation and anti-poisoning in an LmNi4.8 Al0.2 hydrogen storage alloy
Journal
International Journal of Hydrogen Energy
Journal Volume
32
Journal Issue
13
Pages
2494-2500
Date Issued
2007
Author(s)
Abstract
The activation and anti-poisoning characteristics of LmNi4.8 Al0.2 hydrogen storage alloy are investigated. The incubation period of LmNi4.8 Al0.2 ranges from about 8 h to just a few minutes with activation temperatures of 20 and 80 {ring operator} C, respectively. Poisoning effects become more problematic with a higher concentration of CO and a greater number of absorption/desorption cycles. The poisoning can be effectively inhibited by raising the temperature during hydrogen absorption/desorption. The poisoning by H2 S is less than that of CO. The poisoned LmNi4.8 Al0.2 alloy can be successfully reactivated by purging with high purity hydrogen gas. © 2006 International Association for Hydrogen Energy.
SDGs
Type
journal article