Hydrogen storage properties of Mg1−xCaxNi2−y defect solid solutions |
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| Authors: | Junlin Du Xiangcheng Kong Kun Wang Naixin Xu Zhu Wu |
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| Affiliation: | 1. Energy Science and Technology Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, PR China;2. Graduate School of The Chinese Academy of Sciences, Beijing 100039, PR China |
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| Abstract: | Ternary Mg1−xCaxNi2−y solid solutions were synthesized by powder sintering. The phase structures and hydrogen storage properties of the sintered samples were investigated. In a certain range of x and y values, the samples are a single C15 Laves phase with various types of defects. The reduction of Ni content leads to the formation of omission solid solution with vacancies on the sites of Ni. These vacancies increase the hydrogen storage capacity, but decrease the reversibility of hydrogen absorption and desorption. |
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| Keywords: | Hydrogen storage materials Powder sintering Solid solution |
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