Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1273842 | International Journal of Hydrogen Energy | 2009 | 9 Pages |
Abstract
Ball milling of the LiNH2 + LiH storage system was performed at 20 °C, â40 °C, and â196 °C, and the resulting powders were analyzed using X-ray diffraction, scanning electron microscopy, nuclear magnetic resonance (NMR), specific surface area analysis, and kinetics cycling measurements. Ball milling at â40 °C showed no appreciable deviations from the 20 °C sample, but the â196 °C powder exhibited a significant increase in the hydrogen desorption kinetics. NMR analysis indicates that a possible explanation for the kinetics increase is the retention of internal defects generated during the milling process that are annealed at the collision site at higher milling temperatures.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
William Osborn, Tippawan Markmaitree, Leon L. Shaw, Jian-Zhi Hu, JaHun Kwak, Zhenguo Yang,