通过去合金化获得纳米多孔金属材料，在催化、能源、传感器、热交换和生物检测等领域正发挥越来越重要的作用。然而去合金化制备多孔金属在前驱体成分的选择方面依然多采用试错法，严重影响这一材料的发展及其在储能方面的应用。本项目拟在前期熔体脆性研究的工作基础上，探索金属熔体脆性与前驱体合金凝固组织结构之间的联系，研究各种前驱体组织结构在去合金化后的纳米孔的孔径、孔隙率、比表面积及孔洞连通性；研究材料孔隙率及比表面积等与其储锂/钠性能的对应关系，进而建立熔体脆性与储能性之间的联系，以便实现熔体脆性对优良前驱体合金成分的预测，为合金前驱体成分的选取以及利用去合金化制备高性能锂/钠离子电池电极材料提供理论指导。本项目的研究结果将有利于人们掌握如何从控制金属熔体的结构及性质出发，实现人为控制金属的纳米孔结构及性质，从而获得高性能储锂/钠电极材料，满足日益发展的能源及催化等领域对多孔金属材料的需求。

Nanoporous materials synthesized by a dealloying technology play a more and more vital role in the catalysis, the energy sources, the sensors, the heat exchanges and the biological monitoring fields. A trial and error process is still widely used in the composition selections of the precursors used for the nanoporous materials, hindering the development of the material application in the energy sources and the nanoporous material improvement. On the basis of the melt fragility theory proposed by us, we study in this project the relationship between the melt fragility of metals and the solidified structures of the precursor alloys. We explore the size of the nanopores, the rate of pores, the specific surface area and the connectivity of those pores after the dealloying of the precursors. We could study the relationship between the rate of pores, the specific surface area and the storage performance of lithium and sodium ions. The relationship between the melt fragility and the energy storage will be established. A prediction of the excellent composition of precursors can be realized by the melt fragility criterion. This criterion will provide a theoretical guidance for the selection of the precursor composition and the synthesis of the high performance lithium and sodium ion battery electrode materials by the dealloying technology. The result from the project will contribute to realizing the easy control of the structure and properties of the nanoporous material according to the structure and properties of metal melts before the manufacture of precursors. The electrode material with high lithium and sodium ion storage performance will meet the increasing requirement of nanoporous materials in the energy sources and the catalysis fields.