cs501782y_si_001.pdf (401.77 kB)
Effect of Lithium Ion Conduction on Hydrogen Desorption of LiNH2–LiH Solid Composite
journal contribution
posted on 2015-03-06, 00:00 authored by Tengfei Zhang, Shigehito Isobe, Motoaki Matsuo, Shin-ichi Orimo, Yongming Wang, Naoyuki Hashimoto, Somei OhnukiThis paper presents a relationship
between ionic mobility and reaction
kinetics for the Li–N–H system after doping LiTi2O4. The structural characteristic of this fast
ionic conductor was introduced to the complex–hydride system.
On one hand, the properties of the dehydrogenation process were improved
significantly. On the other hand, the relationship between lithium
ionic conductivity and the catalytic effect on the dehydrogenation
was investigated according to the alternating current (AC) impedance
results. The lithium ionic conductivity of samples with catalyst was
higher than the samples without catalyst. Especially, the conductivity
of LiNH2 and LiH mixtures with LiTi2O4 was almost 1.5 times higher than that of LiNH2 and LiH.
The mobility of the Li+ ions between LiH and LiNH2 solid phases was enhanced by adding LiTi2O4.