镁基材料中储氢相及其界面与储氢性能的调控

李谦, 孙璇, 罗群, 刘斌, 吴成章, 潘复生

Regulation of Hydrogen Storage Phase and Its Interface in Magnesium-Based Materials for Hydrogen Storage Performance

LI Qian, SUN Xuan, LUO Qun, LIU Bin, WU Chengzhang, PAN Fusheng

表2 不同调控方法下镁基材料储氢相及组织/界面对比[21,22,56~62,70~73,77~79,81~83]

Table 2 Comparisons of hydrogen storage phase and microstructure/interface of Mg-based materials under different control methods[21,22,56-62,70-73,77-79,81-83]

Regulatory Sample Hydrogen storage Particle Microstructural characteristic Ref. method status phase grain size Smelting Bulk Mg, Mg-TM, Several Large grain/phase size, limited interface fraction [56,57] Mg-RE, hundreds of Mg-TM-RE microns Melt-spinning Ribbon Mg-Ni, - Amorphous or nano/amorphous composite structure, interfaces between amorphous and nanocrystalline [58,59] Mg-Ni-RE Powder Bulk Mg-based Tens of High porosity, core/shell structure, plenty of vacancies and cracks defect, phase/grain boundary [60-62] metallurgy composite phase microns Severe Bulk Mg-based Micro/nano Ultra-fine grain, high density grain/phase boundaries, twin boundaries, dislocation, stacking fault, texture [70-73] plastic metastable grain size deformation phase Vapor Powder/ Mg, Mg-TM, 20-600 nm Nano-particles, nano-films, nano-wires, surface structure, surface orientation, interfacial energy, interfacial stress [21,22] deposition thin film/ Mg-Al, Mg-V, wire Mg-Y Chemical Powder Mg, Mg-TM 10-20 nm Nano-particles, core/shell structure, high purity, high specific surface area [77-79] reduction Mechanical Powder Mg, Mg-TM, Micro/nano size Nano/amorphous composite structure, bcc crystal structure, crystal defect, metastable structural interface [81-83] alloying Mg-RE, Mg-TM-RE