Hydrogen absorption/desorption properties of porous hollow palladium spheres prepared by templating method

被引：15
|
作者：
Kong, Qingquan [1 ]
Feng, Wei [1 ]
Zhong, Xiaoxi [2 ]
Liu, Ying [3 ]
Lian, Lixian [3 ]
机构：
[1] Chengdu Univ, Sch Mech Engn, Chengdu 610106, Peoples R China
[2] Chengdu Univ Informat Technol, Sichuan Prov Key Lab Informat Mat & Devices Appli, Chengdu 610225, Peoples R China
[3] Sichuan Univ, Sch Mat Sci & Engn, Chengdu 610065, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 664卷
关键词：
Hollow; Palladium; Hydrogen absorption/desorption properties; Microstructure; X-RAY-DIFFRACTION; STORAGE PROPERTIES; PD NANOPARTICLES; FABRICATION; SEPARATION; PARTICLES; SYSTEM; SIZE;
D O I：
10.1016/j.jallcom.2015.12.234
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 Delta G(loss) correlation with pressure hysteresis of porous hollow Pd spheres is 4.3-4.8 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. (c) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：188 / 192
页数：5
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