Effects of carbon nanotubes on hydrogen storage property of Mg-based nanocomposites
(1.北京市清华大学机械工程系2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China3.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China)
Abstract: Mg-based hydrogen storage nanocomposites added with carbon nanotubes(CNTs) were prepared by mechanical milling under the atmosphere of hydrogen. The results show that because of their own excellent heat conductivity and good hydrogen storage ability, the carbon nanotubes improve the mass transfer and heat transfer properties of the Mg-based nanocomponents, thus enhancing the kinetic property of hydrogen absorption and desorption of the hydrogen storage nanocomposites, and raising the hydrogen storage capacity. Due to the addition of the carbon nanotubes, the milling stress in the process of preparing the Mg-based nanocomposites is reduced, the components can be closely bonded easily, and the additives can play better catalytic roles.
Key words: hydrogen storage material； carbon nanotubes； Mg-based composite； hydrogen storage capacity