| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1607130 | Journal of Alloys and Compounds | 2016 | 5 Pages |
Abstract
In the present study, hydrogen absorption/desorption properties of porous hollow palladium spheres prepared by templating method were studied. The experimental results reveal that porous hollow Pd spheres have superior hydrogen absorption kinetics than spongy Pd. A typically pressure hysteresis behavior can also be observed in the hydrogen absorption/desorption isotherm curves. Gibbs free energy loss ÎGloss correlation with pressure hysteresis of porous hollow Pd spheres is 4.3-4.8Â kJ/mol, which is larger than spongy Pd and Monocrystal Pd. The special hollow structure and microstructure defects of Pd powder should be taken into account. Moreover, hydride formation enthalpy of porous hollow Pd spheres is smaller than spongy Pd and Pd black.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Qingquan Kong, Wei Feng, Xiaoxi Zhong, Ying Liu, Lixian Lian,