摘要
The lignite-derived carbon from self-protection pyrolysis was employed to balance the fracturing and cold-welding of magnesium during ball milling.Particle size analysis indicates that the introduction of lignite-derived carbon can effectively reduce the particle size of Mg while the introduction of graphite does no help.Besides,the effect of lignite-derived carbon on crystallite size reduction of Mg is also better than graphite.A moderate cold-welding phenomenon was observed after ball-milling Mg with the lignite-derived carbon,suggesting less Mg is wasted on the milling vials and balls.Molecular dynamic simulations reveal that the balanced fracturing and cold-welding of magnesium during ball milling is mainly attributed to the special structure of the lignite-derived carbon:graphitized short-range ordered stacking function as dry lubricant and irregular shape/sharp edge function as milling aid.The preliminary findings in current study are expected to offer implications for designing efficient Mg-based hydrogen storage materials.
作者
韩宗盈
DONG Hui
DING Guoyang
ZHANG Jiale
SONG Xiufang
HAN Zongying;DONG Hui;DING Guoyang;ZHANG Jiale;SONG Xiufang(College of Energy Storage Technology,Shandong University of Science and Technology,Qingdao 266590,China;College of Chemical and Biological Engineering,Shandong University of Science and Technology,Qingdao 266590,China)
基金
Funded by the Shandong Provincial Natural Science Foundation(No.ZR2022MB060)
the Project of Shandong Province Higher Educational Young Innovative Talent Introduction and Cultivation Team(Hydrogen Energy Chemistry Innovation Team)。
