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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.6
- 수록면
- 238 - 245 (8page)
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Mg-Ni nanoparticles were synthesized by a physical vapor condensation method (DC arc-discharge) in a mixture of argon and hydrogen atmosphere, using compressed mixture of micro powders as the raw materials. The crystal phases, morphology, and microstructures of nanoparticles were analyzed by means of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). It was found that the intermetallic compounds of Mg₂Ni and MgNi2 formed with existence of phases of Mg, Ni, and MgO in Mg-Ni nanoparticles. After one cycle of hydrogen absorption/desorption process (activation treatment), Mg-Ni nanoparticles exhibited excellent hydrogen absorption properties. Mg₂Ni phase became the main phase by aphase transformation during the hydrogen treatments. The phenomenon of refinement of grain size in the nanoparticle was also observed after the hydrogen absorption/desorption processes, which was attributed to the effect of volume expansion/shrinkage and subsequent break of nanoparticles. Maximum hydrogen absorption contents are 1.75, 2.21 and 2.77 wt.% at 523, 573 and 623 K, respectively.
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참고문헌 (27)
참고문헌 신청
J. J. Reilly / 1968 / Reaction of hydrogen with alloys of magnesium and nickel and the formation of Mg2NiH4 / Inorg. Chem. 7:2254
E. Grigorova / 2005 / Effect of additives on the hydrogen sorption properties of mechanically alloyed composites based on Mg and Mg2Ni / Int. J. Hydrogen Energy 30:1099
Y. Feng / 2007 / Effect of Al and Ce substitutions of the electrochemical properties of amorphous MgNi-based alloy electrodes / Int. J. Hydrogen Energy 32:1701
X. L. Wang / 1995 / A study of the surface composition and structure of fluorinated Mg-based alloys / J. Alloy Compd. 231:397
M. D. Hampton / 1999 / Water activation of Mg2Ni for hydrogenuptakeOriginal Research Article / Int. J. Hydrogen Energy 24:175
E. Grigorova / 2005 / Effect of additives on the hydrogen sorption properties of mechanically alloyed composites based on Mg and Mg2Ni / Int. J. Hydrogen Energy 30:1099
Y. Feng / 2007 / Effect of Al and Ce substitutions of the electrochemical properties of amorphous MgNi-based alloy electrodes / Int. J. Hydrogen Energy 32:1701
X. L. Wang / 1995 / A study of the surface composition and structure of fluorinated Mg-based alloys / J. Alloy Compd. 231:397
M. D. Hampton / 1999 / Water activation of Mg2Ni for hydrogenuptakeOriginal Research Article / Int. J. Hydrogen Energy 24:175
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