Hydrogen Storage Properties of Mg76Ti12Ni12-xCrX(x=0,3,6,9) Alloys by Mechanical Alloying

Zhi Qiang Lan; Shu Bo Li; Zhao Lu; Jin Guo

doi:10.4028/www.scientific.net/AMR.156-157.1146

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 156-157Hydrogen Storage Properties of...

Hydrogen Storage Properties of Mg₇₆Ti₁₂Ni_12-xCr_X(x=0,3,6,9) Alloys by Mechanical Alloying

Abstract:

Mg76Ti12Ni12-xCrx(x=0,3,6,9) alloys were synthesized by mechanical alloying(MA) approach and hydrogen storage properties of the alloys were investigated by X-ray diffraction, thermal analysis and pressure-composition isotherm measurement. It is found that Ti2Ni phase and Mg2Ni phase exist as the main phases in Mg76Ti12Ni12-xCrx(x=0,3,6,9) alloys. The Mg76Ti12Ni12-xCrx(x=0,3,6,9) alloys exhibit the hydrogen storage capacity of 4.61,4.30,4.21 and 4.12wt%, and the decomposition enthalpies of the alloy hydrides are 928.4, 898.3, 831.2 and 851.4J/g H2, respectively. Mg76Ti12Ni6Cr6 alloy shows small hysteresis and fast hydrogen absorption rate. Proper Cr content can improve the performance of the Mg76Ti12Ni12-xCrx(x =0,3,6,9) alloys.

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Periodical:

Advanced Materials Research (Volumes 156-157)

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1146-1150

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https://doi.org/10.4028/www.scientific.net/AMR.156-157.1146

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Online since:

October 2010

Authors:

Zhi Qiang Lan, Shu Bo Li, Zhao Lu, Jin Guo

Keywords:

Hydrogen Storage Property, Mechanical Alloying (MA), Mg-Ti Alloy

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