Hydrogen storage properties of Mg1−xCaxNi2−y defect solid solutions

✍ Scribed by Junlin Du; Xiangcheng Kong; Kun Wang; Naixin Xu; Zhu Wu

• Book ID: 103832595
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 395 KB
• Volume: 35
• Category: Article
• ISSN: 0360-3199
• DOI: 10.1016/j.ijhydene.2010.07.053

✦ Synopsis

Ternary Mg 1Àx Ca x Ni 2Ày solid solutions were synthesized by powder sintering. The phase structures and hydrogen storage properties of the sintered samples were investigated. In a certain range of x and y values, the samples are a single C15 Laves phase with various types of defects. The reduction of Ni content leads to the formation of omission solid solution with vacancies on the sites of Ni. These vacancies increase the hydrogen storage capacity, but decrease the reversibility of hydrogen absorption and desorption.