Hydrogenation properties of MgH2- x wt% AC (x=0, 5, 10, 15) nanocomposites |
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| Affiliation: | 1. Department of Physics, University of Rajasthan Jaipur, JLN Marg, Jaipur, 302004, Rajasthan, India;2. Govt. Girls College Jhunjhunu, Rajasthan, India;3. Govt. College Jhunujhunu, Rajasthan, India;4. Centre for Non-Conventional Energy Resources, University of Rajasthan Jaipur, JLN Marg, Jaipur, 302004, Rajasthan, India;1. Center for Materials Crystallography (CMC), Interdisciplinary Nanoscience Center (iNANO), Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark;2. Department of Chemistry – Ångström Laboratory, Inorganic Chemistry, Uppsala University, Box 538, 75121 Uppsala, Sweden;3. Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark;1. State Key Laboratory of Silicon Materials, School of Materials Science & Engineering, Zhejiang University, Hangzhou, 310027, China;2. Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology, Guangxi Novel Battery Materials Research Centre of Engineering Technology, School of Physical Science and Technology, Guangxi University, Nanning, 530004, PR China;1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621999, PR China;2. College of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, PR China;3. Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, PR China;1. Hydrogen Energy Center, Department of Physics, Banaras Hindu University, Varanasi 221005, India;2. Department of Physics, Banaras Hindu University, Varanasi 221005, India;1. Department of Functional Material Research, Central Iron and Steel Research Institute, Beijing 100081, China;2. Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China;3. Beijing Key Laboratory of Precision Alloys, Beijing 100081, China;1. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;2. School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Magnesium is considered as a promising candidate for hydrogen storage due to its high storage capacity (theoretical value ~ 7.6 wt%). Nanocomposites of Magnesium hydride and activated charcoal (AC) were prepared using ball milling method. These nanocomposites were characterized by XRD, TGA, DSC and SEM techniques. The TGA analysis show that the MgH2-5 wt% AC nanocomposite exhibits dehydrogenation capacity of 7.45 wt% (which is very close to the storage capacity of MgH2) and starts release of hydrogen at 140 °C temperature. The results from the Kissinger plot from DSC result showed that the activation energy for hydrogen desorption of MgH2 with 5 wt% AC was reduced compared to those of as-received. |
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| Keywords: | Magnesium hydride Hydrogen storage Ball milling Kissinger plot |
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