Gas hydrogen absorption and electrochemical properties of Mg24Ni10Cu2 alloys improved by Y substitution,ball milling and Ni addition |
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| Affiliation: | 1. ERE & BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China;2. Energy Innovation Software Co. Ltd., Beijing, 100094, China;3. SINOPEC Petroleum E&P Research Institute, Beijing, 100083, China;4. China University of Geosciences, Beijing, 100083, China;1. Xi''an University of Technology, Xi''an, Shaanxi, 710048, China;2. Key Laboratory of Thermo-Fluid Science and Engineering of MOE, Xi''an Jiaotong University, Xi''an, Shaanxi, 710049, China;1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, PR China;2. ERE & BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China;3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;4. Department of Oil-Gas Field Development Engineering, College of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;1. Electrochemical Systems Laboratory, SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur, 603203, India;2. Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, 603203, India;3. Department of Chemistry, SRM University, Kattankulathur, 603203, India;1. The Biosensor and Bioelectronics Technology Centre, The Research and Technology Center for Renewable Products and Energy, King Mongkut''s University of Technology North Bangkok, Bangkok, 10800, Thailand;2. Department of Agro-Industrial, Food and Environmental Technology, Faculty of Applied Science, King Mongkut''s University of Technology North Bangkok, Bangkok, 10800, Thailand;3. Key Laboratory of Development and Application of Rural Renewable Energy, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu, 610041, China;1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, PR China;2. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, PR China |
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| Abstract: | Mg24Ni10Cu2 and Mg22Y2Ni10Cu2 alloys were prepared via vacuum induction melting, and the nanocrystalline/amorphous Mg24Ni10Cu2 and Mg24Ni10Cu2 + 100 wt% Ni alloys were synthesized through ball milling method. Microstructure and hydrogen storage properties of the alloys were investigated and compared as well. The results suggest that adding Ni in the milling process significantly promotes formation of amorphous and nanocrystalline structure. For these four alloys, the as-milled Mg24Ni10Cu2 with 100 wt% Ni shows the best hydrogen storage performances that 2.03 wt% hydrogen content can be absorbed just in 1 min, and the electrochemical capacity reaches to 899.2 mAh/g. Furthermore, ball milling with Ni promotes the charge transfer reaction and hydrogen diffusion ability which is advantageous to the high rate discharge ability. |
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| Keywords: | Ball milling Partial substitution Gas absorption Electrochemical performance |
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