Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5148226 | International Journal of Hydrogen Energy | 2016 | 12 Pages |
Abstract
In this paper, ZrCo alloy was prepared by vacuum arc-melting method and further modified with Ni coating via electroless plating method with different depositing time 10-40Â min, respectively. The effects of Ni coating on microstructures, morphology and hydrogen storage properties including kinetic property, thermodynamic behavior and cycling stability of ZrCo alloy have been investigated systematically. It is confirmed that ZrCo alloy is successfully coated with Ni particles which transform from a dispersed distribution to a uniform and compact arrangement with increasing depositing time. The improved hydrogen absorption kinetic property of Ni coated alloys is attributed to the catalyst effect of Ni which facilitates hydrogen to dissociate on alloy surface in the initial incubation. In the hydriding period, Ni coated alloys with increasing depositing time exhibit slower hydriding rate due to the thicker Ni coating which increases the resistance of hydrogen diffusion and reduces the diffusion rate. Ni coated alloy with depositing time 20Â min shows superior absorption/desorption kinetic property. In addition, compared with the original alloy, the dehydrogenation temperature of Ni coated alloy with 20Â min depositing time decreases, demonstrating potential for the further application in International Thermonuclear Experimental Reactor (ITER).
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Feng Wang, Rongfeng Li, Cuiping Ding, Jing Wan, Ronghai Yu, Zhongmin Wang,