Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3)合金的制备及储氢性能研究
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摘要
在氩气保护下,采用机械合金化法制备Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3)合金,并通过XRD、SEM以及DSC等手段对合金进行表征。结果表明,适量的Ti替代Al可以提高合金的吸氢量、降低合金的初始氢化/脱氢温度和提高合金氢化/脱氢动力学性能。Mg_(10)Al_((7-x))Li_2Ti_x(x=1,2,3)合金样品比Mg10Al7Li2合金的初始氢化温度都降低了62K,而初始脱氢温度则分别降低了77、98和59K。当Ti的替代量为x=2时,合金的综合储氢性能最好。
Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3) alloys were prepared by mechanical alloying under hydrogen atmosphere protection and characterized by XRD,SEM and DSC.The results show that Ti addition can improve hydrogen absorption capacity of alloys,reduce initial alloy hydride temperature,and improve performance of alloy hydrogen absorption kinetics.Initial hydride temperatures of Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3)alloys are all 62 Klower than those of Mg_(10)Al_7Li_2 alloy,and initial dehydrogenation temperature drops by 77,98,and 59 Krespectively.The optimum comprehensive hydrogen storage performance is obtained with x=2.
Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3) alloys were prepared by mechanical alloying under hydrogen atmosphere protection and characterized by XRD,SEM and DSC.The results show that Ti addition can improve hydrogen absorption capacity of alloys,reduce initial alloy hydride temperature,and improve performance of alloy hydrogen absorption kinetics.Initial hydride temperatures of Mg_(10)Al_((7-x))Li_2Ti_x(x=0,1,2,3)alloys are all 62 Klower than those of Mg_(10)Al_7Li_2 alloy,and initial dehydrogenation temperature drops by 77,98,and 59 Krespectively.The optimum comprehensive hydrogen storage performance is obtained with x=2.
引文
[1]LIU Jianjun,TYRRELL JAMES,CHEN Lei,et al.First-principles studies on hydrogen desorption mechanism of MgnH2 n(n=3,4)[J].Journal of Physical Chemistry C,2013,117(16):8099-8104.
[2]李法兵,蒋利军,詹锋,等.机械合金化直接合成镁基复合储氢材料研究[J].稀有金属材料与工程,2005,34(5):750-753.
[3]BAUM L,MEYER M,MENDO ZA.Hydrogen storage properties of the Mg/Fe system[J].Physica Bcondensed matter,2007,389(1):189-192.
[4]HUANG Zhenggao,GUO Zenping,LIU Hua,et al.Effects of carbonblack graphite and carbon nanotube additives on hydrogen storage properties of magnesium[J].Journal of Alloys and Compounds,2007,427(1/2):94-100.
[5]KELTON K F,HARTZELL J J,HENNING R G,et al.Hydrogen storage Ti-Zr and Ti-Hf-based quascrystals[J].Philosophical magazine,2006,86(6/7/8):957-964.
[6]WANG Ping,JENSEN C M.Preparation of Ti-doped sodium aluminum hydride from mechanical milling of NaH/Al with off-the-shelf Ti powder[J].Journal of Physical Chemistry B,2004,108(40):15827-15829.
[7]WANG Ping,KANG Xiaodong,CHENG Huiming.Exploration of the nature of active Ti species in metallic Ti-doped NaAlH4[J].Journal of Physical Chemistry B,2005,109(43):20131-20136.
[8]LIU Shusheng,SUN Lixian,ZHANG Jian,et al.Hydrogen storage properties of destabilized MgH2-Li3AlH6system[J].International Journal of Hydrogen Energy,2010,35(15):8122-8129.
[9]LIU Shusheng,SUN Lixian,XU Fen,et al.Improve dehydrogenation of MgH2-Li3AlH6 mixture with TiF3addition[J].International Journal of Hydrogen Energy,2011,36(18):11785-11793.
[10]ISMAIL MOHAMMAD,ZHAO Yue,YU Xuebin,et al.Significantly improved dehydrogenation of LiAlH4catalysed with TiO2 nanopowder[J].International Journal of Hydrogen Energy,2011,36(14):3827-8334.
[11]ISMAIL MOHAMMAD,ZHAO Yue,YU Xuebin,et al.Effect of different additives on the hydrogen storage properties of the MgH2-LiAlH4 destabilized system[J].RSC Advances,2011,1(3):408-414.
[12]黄显吞,卿培林,覃昌生.2LiNH2/MgH2+5%M(M=0,AlCl3,MgCl2,TiCl3)合金的制备与储氢性能[J].有色金属(冶炼部分),2006(4):58-62.
[13]VAN SETTEN M J,ER S,BROCKS G,et al.Firstprinciples study of the optical properties of MgxTi(1-x)H2[J].Physical Review B,2009,79(12):125-128.
[14]TAO Sunxin,KALISVAART Wunping,DANAIE MOHEN,et al.First principle study of hydrogen diffusion in equilibrium rutile,rutile with deformation twins and fluorite polymorph of Mg hydride[J].International Journal of Hydrogen Energy,2011,36(18):11802-11809.
[15]TAN Xuehai,HARROWER CHRISTOPHER,AMIRKHIZ BABAKSHALCHI,et al.Nano-scale bilayer Pd/Ta,Pd/Nb,Pd/Ti and Pd/Fe catalysts for hydrogen sorption in magnesium thin films[J].International Journal of Hydrogen Energy,2009,34(18):7741-7748.
[2]李法兵,蒋利军,詹锋,等.机械合金化直接合成镁基复合储氢材料研究[J].稀有金属材料与工程,2005,34(5):750-753.
[3]BAUM L,MEYER M,MENDO ZA.Hydrogen storage properties of the Mg/Fe system[J].Physica Bcondensed matter,2007,389(1):189-192.
[4]HUANG Zhenggao,GUO Zenping,LIU Hua,et al.Effects of carbonblack graphite and carbon nanotube additives on hydrogen storage properties of magnesium[J].Journal of Alloys and Compounds,2007,427(1/2):94-100.
[5]KELTON K F,HARTZELL J J,HENNING R G,et al.Hydrogen storage Ti-Zr and Ti-Hf-based quascrystals[J].Philosophical magazine,2006,86(6/7/8):957-964.
[6]WANG Ping,JENSEN C M.Preparation of Ti-doped sodium aluminum hydride from mechanical milling of NaH/Al with off-the-shelf Ti powder[J].Journal of Physical Chemistry B,2004,108(40):15827-15829.
[7]WANG Ping,KANG Xiaodong,CHENG Huiming.Exploration of the nature of active Ti species in metallic Ti-doped NaAlH4[J].Journal of Physical Chemistry B,2005,109(43):20131-20136.
[8]LIU Shusheng,SUN Lixian,ZHANG Jian,et al.Hydrogen storage properties of destabilized MgH2-Li3AlH6system[J].International Journal of Hydrogen Energy,2010,35(15):8122-8129.
[9]LIU Shusheng,SUN Lixian,XU Fen,et al.Improve dehydrogenation of MgH2-Li3AlH6 mixture with TiF3addition[J].International Journal of Hydrogen Energy,2011,36(18):11785-11793.
[10]ISMAIL MOHAMMAD,ZHAO Yue,YU Xuebin,et al.Significantly improved dehydrogenation of LiAlH4catalysed with TiO2 nanopowder[J].International Journal of Hydrogen Energy,2011,36(14):3827-8334.
[11]ISMAIL MOHAMMAD,ZHAO Yue,YU Xuebin,et al.Effect of different additives on the hydrogen storage properties of the MgH2-LiAlH4 destabilized system[J].RSC Advances,2011,1(3):408-414.
[12]黄显吞,卿培林,覃昌生.2LiNH2/MgH2+5%M(M=0,AlCl3,MgCl2,TiCl3)合金的制备与储氢性能[J].有色金属(冶炼部分),2006(4):58-62.
[13]VAN SETTEN M J,ER S,BROCKS G,et al.Firstprinciples study of the optical properties of MgxTi(1-x)H2[J].Physical Review B,2009,79(12):125-128.
[14]TAO Sunxin,KALISVAART Wunping,DANAIE MOHEN,et al.First principle study of hydrogen diffusion in equilibrium rutile,rutile with deformation twins and fluorite polymorph of Mg hydride[J].International Journal of Hydrogen Energy,2011,36(18):11802-11809.
[15]TAN Xuehai,HARROWER CHRISTOPHER,AMIRKHIZ BABAKSHALCHI,et al.Nano-scale bilayer Pd/Ta,Pd/Nb,Pd/Ti and Pd/Fe catalysts for hydrogen sorption in magnesium thin films[J].International Journal of Hydrogen Energy,2009,34(18):7741-7748.