Characteristics of Hydrogen Storage by Sn/MgH2 Nanocomposite Obtained by Mechanical Milling of MgH2 with Sn
The hydrogen desorption of Sn/MgH2 nanocomposite which is formed by ball milling of MgH2 and tin compounds (Sn, Sn(C4H9)4 or SnCl2), has been studied. The hydrogen desorption properties (desorption temperature and enthalpy of dehydriding) were significantly improved as a result of a Sn/MgH2 nanocomposite formation. TDS (thermal desorption spectrometry), TG (thermogravimetry) and DSC (differential scanning calorimeter) measurements exhibited the existence of at least two types of hydrogen species in the Sn/MgH2 nanocomposite resulting from ball milling of MgH2 with Sn; the one was hydrogen in the newly formed Sn/MgH2 nanocomposite and the other hydrogen derived from MgH2 remaining in Sn/MgH2.
Young Won Chang, Nack J. Kim and Chong Soo Lee
H. Imamura et al., "Characteristics of Hydrogen Storage by Sn/MgH2 Nanocomposite Obtained by Mechanical Milling of MgH2 with Sn", Materials Science Forum, Vols. 561-565, pp. 1637-1640, 2007