|
|||||
|
|
Dual-tuning effect of In on the thermodynamic and kinetic properties of Mg2Ni dehydrogenation |
|
| Authors: | LZ Ouyang ZJ Cao H Wang JW Liu DL Sun QA Zhang M Zhu |
| Affiliation: | 1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, People''s Republic of China;2. Department of Materials Science, Fudan University, Shanghai 200433, People''s Republic of China;3. School of Materials Science and Engineering, Anhui University of Technology, Maanshan, Anhui 243002, People''s Republic of China;4. Key Laboratory of Advanced Energy Storage Materials of Guangdong Province, South China University of Technology, Guangzhou 510641, People''s Republic of China |
| Abstract: | Mg2In0.1Ni solid solution with an Mg2Ni-type structure has been synthesized and its hydrogen storage properties have been investigated. The results showed that the introduction of In into Mg2Ni not only significantly improved the dehydrogenation kinetics but also greatly lowered the thermodynamic stability. The dehydrogenation activation energy (Ea) and enthalpy change (ΔH) decreased from 80 kJ/mol and 64.5 kJ/mol H2 to 28.9 kJ/mol and 38.4 kJ/mol H2, respectively. The obtained results point to a method for improving not only the thermodynamic but also the kinetic properties of hydrogen storage materials. |
| Keywords: | Hydrogen storage Magnesium alloys Thermodynamics Kinetics |
| 本文献已被 ScienceDirect 等数据库收录！ | |