以改性无烟煤为助磨剂,在氢气气氛下球磨制备了具有纳米结构的镁铝合金储氢材料,通过SEM,XRD,TPD等手段对比研究了球磨吸氢材料及静态再吸氢材料的晶相结构及放氢动力学性能.结果表明:改性无烟煤具有良好的助磨作用,经5.5h球磨,材料平均粒度可达74nm;镁铝合金经反应球磨后,其中的Mg转化成了β-MgH2和γ-MgH2,放氢峰温低于300℃;静态再吸氢后,MgH2全部以β-MgH2存在,且晶体粒度增长60％,Mg17Al12分解为单质Mg和Al,其中单质Al使储氢材料放氢活化能降低,用Kissinger方程计算出球磨储氢和再吸氢材料的放氢一级表观活化能分别为107.3kJ/mol和67.1kJ/mol.
参考文献
| [1] | IMAMURA H,MASANARI K,KUSUHARA M,et al .High hydrogen storage capacity of nanosized magnesium synthesized by high energy ball-milling[J].Journal of Alloys and Compounds,2005,386:211-216.,2005. |
| [2] | NARAYANAN D L,LUEKING A D .Mechanically milled coal and magnesium composites for hydrogen storage[J].Carbon,2007,45(4):805-820.,2007. |
| [3] | 胡秀颖,周仕学,王振华,马怀营,雷桂芹.球磨时间对镁碳复合储氢材料结构和性能的影响[J].功能材料,2008(03):424-425,429. |
| [4] | 卢国俭,周仕学,马怀营,谭琦,ZHOU Zhuang-fei.反应球磨法制备镁/碳纳米复合储氢材料[J].功能材料,2007(07):1128-1131. |
| [5] | CRIVELLO J C,NOBUKI T,KUJI T .Improvement of Mg-Al alloys for hydrogen storage applications[J].International Journal of Hydrogen Energy,2009,34 |
| [6] | JIANG J J,WEI J,LENG H Y.Effect of Al on the hydrogen storage properties of Mg(BH4[2]J].International Journal of Hydrogen Energy,ISSN:03603199;DOI:10.1016/j.ijhydene.2013.01.093,2013. |
| [7] | 肖学章,陈立新,刘广成,王爽,李寿权,王新华,陈长聘.球磨Mg17Al12纳米晶/非晶合金的微结构和储氢性能[J].西安交通大学学报,2007(11):1368-1372. |
| [8] | HUANG L W,ELKEDIM O,NOWAK M,et al .Synergistic effects of multiwalled carbon nanotubes and Al on the electrochemical hydrogen storage properties of Mg2Ni-type alloy prepared by mechanical alloying[J].International Journal of Hydrogen Energy,2012,37(2):1538-1545.,2012. |
| [9] | BOUOUDINA M,GUO Z X .Comparative study of mechanical alloying of (Mg+Al) and (Mg+Al+Ni) mixtures for hydrogen storage[J].Journal of Alloys and Compounds,2002,336:222-231.,2002. |
| [10] | PALMA A S,ITURBE G,JOSE L,et al .MgAl alloy synthesis,characterization and its use in hydrogen storage[J].International Journal of Hydrogen Energy,2010,35(21):12120-12124.,2010. |
| [11] | 谢昭明,付安庆,陈玉安,潘复生,丁培道.Al的添加对Mg2Ni储氢合金结构和氢扩散能力的影响研究[J].功能材料,2006(04):601-603. |
| [12] | 王美涵,张连中,孙立贤,张耀,徐芬,谭志诚,袁华堂,张涛.Mg1.75Al0.25Ni1-xCrx （0≤x≤0.2）合金的制备及其性能[J].高等学校化学学报,2005(10):1877-1880. |
| [13] | 罗翔,郑坊平,王春涛,等 .添加Ti0.9Zr0.1Mn1.5复合球磨对Ti9.6V86.4Fe4合金储氢性能的影响[J].西安交通大学学报,2007,41(12):1491-1494.LUO X,ZHENG F P,WANG C T,et al.Influence of composite ball milling with Ti0.9 Zr0.1 Mn1.5 on hydrogen storage properties of Ti9.6 V86.4 Fe4 alloy[J].Journal of Xi' an Jiaotong University,2007,41(12):1491-1494.,2007. |
| [14] | BORTZ M,BERTHEVILLE B,BOTTGER G .Structure of the high pressure phase λ-MgH2 by neutron powder diffraction[J].Journal of Alloys and Compounds,1999,287 |
| [15] | ZHOU S X,CHEN H P,DING C,et al .Effectiveness of crystallitic carbon from coal as milling aid and for hydrogen storage during milling with magnesium[J].Fuel,2012,109 |
| [16] | 许娟,李鹏飞,郭锋.热处理对AZ91D镁合金相结构的影响[J].材料热处理学报,2011(04):30-33. |
| [17] | 李武会,田保红,马坪,吴尔冬.ScMn2合金贮氢（氘）性能[J].金属学报,2012(07):822-829. |
| [18] | 余学斌,陈金舟,吴铸,夏保佳.Cr含量对TiMn1.2-xCrxV0.25Fe0.05合金吸/放氢性能的影响[J].金属学报,2004(05):527-530. |
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