| 溶剂热法合成Ce-Mg-Ni/C纳米复合储氢材料 | |
| Synthesis of Ce-Mg-Ni/C Nano-Composite Hydrogen Storage Materials by Solvent-Thermal Method | |
| 摘要: 首先以葡萄糖为C源，水热法制备了均匀C球，再以乙二醇为溶剂，先后加入醋酸镍、醋酸镁和氯化铈，最终制得Ce-Mg-Ni/C纳米复合储氢材料。采用X射线衍射仪（XRD）分析了溶剂热后复合材料的微观结构，用扫描电镜（SEM）观察了其形貌。通过自动控制的Sieverts设备测试了材料的吸放氢动力学性能。研究表明以均匀C球为载体，预制的Ce、Mg、Ni原子比为2：1：2及23：4：7的复合材料呈现纳米结构。XRD结果表明，复合材料中出现明显的Ce2MgNi2和Ce23Mg4Ni7的峰值，并伴随有第二相CeMg3和CeNi3出现。通过P-C-T（pressure-composition-temperature）测试实验结果显示，Ce2MgNi2/C和Ce23Mg4Ni7/C复合材料在50℃下的吸附氢量分别可达到1.54%和1.05%（w/w）。 | |
| 关键词: Ce-Mg-Ni/C复合材料 溶剂热合成 纳米复合结构 储氢 | |
| 基金项目: 国家自然科学基金（No.51864040）和内蒙古科技大学创新基金（No.2017QDL-S02）资助项目。 | |
| Abstract: The hydrothermal method was taken to preparing uniform C-sphere from glucose as the C source, then using ethylene glycol as the solvent, and nickel acetate, magnesium acetate and cerium chloride were added successively. Finally, the Ce-Mg-Ni/C nano-composite for hydrogen storage was producing. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to analyze the phase composition and morphology of the solvent-thermal synthesis the nano-composites. Hydrogen adsorption-desorption measurements were performed by an automatic controlled Sieverts. SEM analysis indicated that the pre-fabricated composites with atom radios of 2:1:2 and 23:4:7 presented a nano-scale structure in uniform C-sphere templates. The XRD analysis showed that Ce2MgNi2 and Ce23Mg4Ni7 have been formed as nano-composite with carbon, and the peaks of the second phase CeMg3 and CeNi3 were presented in XRD patterns. P-C-T (pressure-composition-temperature) test date revealed that the hydrogen adsorption capacity of Ce2MgNi2/C and Ce23Mg4Ni7/C composites reached 1.54% and 1.05%(w/w) at 50℃, respectively. | |
| Keywords: Ce-Mg-Ni/C composites solvent-thermal synthesis nano-composite structure hydrogen storage | |
| 投稿时间：2019-07-04 修订日期：2019-10-13 | |
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| 刘卓承,郭瑞华,阮飞,胡锋,张捷宇,安胜利.溶剂热法合成Ce-Mg-Ni/C纳米复合储氢材料[J].无机化学学报,2019,35(12):2284-2290. | |
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