Solvothermal synthesis of Mg-Ni/C nanocomposite for hydrogen storage using vitamin C as carbon source |
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| Authors: | Chien-Ming Lei Chi-Jung Su Jao-An Liao Yi-Jun Luo Wei-Li Yuan |
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| Affiliation: | 1. Department of Chemical & Materials Engineering and Graduate Institute of Nanomaterials, Chinese Culture University, 55, Huagang Rd., Shilin Dist., Taipei 11114, Taiwan;2. School of Applied Chemistry, Chung Shan Medical University, 110, Sec. 1, Jianguo N. Rd., Taichung 40201, Taiwan;3. Department of Medical Research, Chung Shan Medical University Hospital, 110, Sec. 1, Jianguo N. Rd., Taichung 40201, Taiwan;4. Department of Chemical Engineering, Feng Chia University, 100, Wenhua Rd., Xitun Dist., Taichung 40724, Taiwan |
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| Abstract: | Metal alloys such as Mg2Ni and TiFe can absorb and store H2 to form metal hydrides. The alloys are frequently prepared by grinding the metal ingredients together. In this work, a solvothermal synthesis was taken to prepare the Mg-Ni/C nanocomposite from vitamin C, magnesium acetate, and nickel acetate, using ethylene glycol as solvent and reductant. Without adding Pd as nucleating agent, it is proposed to obtain Mg-Ni alloys by reduction and carbon nanoparticles by carbonization. XRD analysis shows that Mg2Ni and Mg-Ni2 have been formed as nanocomposite with carbon. After calcination in vacuum at 500 °C for 1 h, the Mg-Ni/C nanocomposite showed enhanced magnetism. XRD results give peaks of Ni and MgO, indicative of phase separation and Mg oxidation. In conclusion, it is feasible to synthesize Mg-Ni/C or other carbon-containing hydrogen storage composites using the solvothermal method. |
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| Keywords: | Hydrogen storage Solvothermal synthesis Mg2Ni |
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