| MgH2-MoS2-PP复合材料的储氢性能 | |
| Hydrogen Storage Properties of MgH2-MoS2-Pyrolyzed Polyaniline Composite | |
| 摘要: 通过球磨法制备了MgH2-MoS2-PP（PP=热解聚苯胺，wMoS2=wPP=8.33%）复合材料。与纯MgH2对比研究发现，复合材料的初始放氢温度从650 K下降到550 K，并且在573 K下，75 min内的放氢量从0.38%（w/w，下同）提高到2.36%。在423 K下，放氢后产物可在40 min内吸氢2.45%，比纯MgH2高出2.13倍。放氢反应的活化能比纯MgH2（101.83 kJ·mol-1）降低了28.81 kJ·mol-1。MgH2-MoS2-PP复合材料的性能提高是由于PP能够均匀地减小Mg颗粒尺寸，并提高MoS2在体系放氢与再吸氢过程中的催化效率。 | |
| 关键词: 储氢材料 氢化镁 复合材料 MoS2 热解聚苯胺 | |
| 基金项目: 国家自然科学基金（No.50971112，51471065）和河北省高等学校科学技术研究重点项目（No.ZD2014004）资助 | |
| Abstract: A composite of MgH2-MoS2-PP (PP=pyrolyzed polyaniline, wMoS2=wPP=8.33%) was prepared by ball-milling. In comparison to pure MgH2, the onset decomposition temperature of the composite decreases from 650 to 550 K and the hydrogen desorption content increases from 0.38% to 2.36% (w/w, the same below) at 573 K within 75 min. The composite can absorb 2.45% H2 within 40 min, which is 2.13 times higher than that of the MgH2 at 423 K. The apparent activation energy of the composite is 101.83 kJ·mol-1, decreasing by 28.81 kJ·mol-1 compared to MgH2. The reason of superior hydrogen storage performance of the PP-MoS2-MgH2 composite is found to be that PP can effectively decrease the size of Mg particles and enhance the catalytic efficiency of MoS2 in the desorption-resorption cycling. | |
| Keywords: hydrogen storage material magnesium hydride composite MoS2 pyrolyzed polyaniline | |
| 投稿时间：2017-05-16 修订日期：2017-08-09 | |
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| 刘洋,李媛,彭丹丹,郭亮亮,张璐,韩树民.MgH2-MoS2-PP复合材料的储氢性能[J].无机化学学报,2017,33(12):2296-2302. | |
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