Hydrogen storage properties of nanocomposite Mg-Ni-MnO_2 made by mechanical milling 被引量：1

Hydrogen storage properties of nanocomposite Mg-Ni-MnO_2 made by mechanical milling

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摘要 The hydrogen storage properties of the nanocomposite Mg 95 Ni 3(MnO 2) 2 (mass fraction, %) were studied. The temperature changes in hydriding/dehydriding process were investigated. The nanocomposite was fabricated by ball milling process of mixed elemental Mg, Ni and oxide maganese MnO 2 under hydrogen pressure (approximately 0.6?MPa). The hydrogen absorption and desorption properties of the samples milled for various times were investigated. A remarkable enhancement of hydrogen absorption kinetics and low operational desorption temperature have been found after the sample milled for over 57?h. For example, this nanocomposite can absorb hydrogen more than 6.0% (mass fraction) in 60?s at 200?℃ under 2.0?MPa, and desorption capacity also exceeds 6.0% (mass fraction) in 400?s at 310?℃ under 0.1?MPa. The storage properties of samples milled for various times were studied and the kinetics of the samples were analyzed. The hydrogen storage properties of the nanocomposite Mg 95 Ni 3(MnO 2) 2 (mass fraction, %) were studied. The temperature changes in hydriding/dehydriding process were investigated. The nanocomposite was fabricated by ball milling process of mixed elemental Mg, Ni and oxide maganese MnO 2 under hydrogen pressure (approximately 0.6?MPa). The hydrogen absorption and desorption properties of the samples milled for various times were investigated. A remarkable enhancement of hydrogen absorption kinetics and low operational desorption temperature have been found after the sample milled for over 57?h. For example, this nanocomposite can absorb hydrogen more than 6.0% (mass fraction) in 60?s at 200?℃ under 2.0?MPa, and desorption capacity also exceeds 6.0% (mass fraction) in 400?s at 310?℃ under 0.1?MPa. The storage properties of samples milled for various times were studied and the kinetics of the samples were analyzed.

作者王尔德于振兴刘祖岩

出处《中国有色金属学会会刊：英文版》 CSCD 2002年第2期227-232,共6页 Transactions of Nonferrous Metals Society of China

关键词储氢合金材料性能 Mg-Ni-MnO2 镁镍二氧化锰纳米复合机械磨碎法 mechanical milling nanocomposite Mg Ni MnO 2 hydrogen storage materials

分类号 TG139 [一般工业技术—材料科学与工程]

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参考文献15

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中国有色金属学会会刊：英文版

2002年第2期

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Hydrogen storage properties of nanocomposite Mg-Ni-MnO_2 made by mechanical milling 被引量：1

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