利用一种新模型分析了纳米晶镁粉的吸放氢动力学,量化了球磨和添加剂Pd对镁粉吸放氢动力学性能的改善效果.结果表明,球磨能大幅度降低氢化反应活化能,提高镁粉的氢化速率30倍.添加1%(质量分数)Pd的纳米镁粉(30 nm)的吸放氢速率比未添加Pd的纳米镁粉(30 nm)的吸氢速率提高6.6倍.模型计算出30 nm Mg-1%Pd(质量分数)合金的吸氢活化能为38.74 kJ/molH2.
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