摘要
用机械合金化方法,以氢气作为保护气氛(0.5MPa),通过添加碳纳米管,制备出含有碳纳米管的镁基储氢材料(Mg3Ni2MnO20.25CNTs)。结果表明:该材料具有优异的储氢性能,储氢容量达到7.0%;动力学性能也得到提高,吸氢过程基本在100s以内完成,在0.1MPa下放氢过程可在600s完成,放氢平台温度在280℃左右。添加碳纳米管,镁基储氢材料在机械球磨过程中,可以提高其球磨效率,颗粒更加细化均匀,传质与传热性能得到改善,该材料具有良好的应用前景。
Nanocomposite Mg-3Ni-2MnO-0.25CNTs was made by mechanical ball milling method under hydrogen pressure of 0.5MPa. The nanocomposite has very high Absorption hydrogen capacity and remarkable kinetic properties in hydriding /dehydriding process, for example the nanocomposite can Absorb 7.0% hydrogen in 100s at 200℃ under of hydrogen pressure of 2.0MPa. The grain of Mg-based hydrogen storage materials with CNTs is much smaller in ball milling process than that of the materials without CNTs. The composites has potential application in the future.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2005年第6期876-881,共6页
The Chinese Journal of Nonferrous Metals
