Tunable Nanoporous Metallic Glasses Fabricated by Selective Phase Dissolution and Passivation for Ultrafast Hydrogen Uptake
Tunable Nanoporous Metallic Glasses Fabricated by Selective Phase Dissolution and Passivation for Ultrafast Hydrogen Uptake
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DOI：
10.1021/acs.chemmater.7b01038
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发表时间：
2017-05-23
影响因子：
8.6
通讯作者：
Chen, Mingwei
中科院分区：
文献类型：
--
作者：
Jiao, Wei;Liu, Pan;Chen, Mingwei
实现无序金属玻璃的大比表面积具有重要的科学和技术意义。在这里，我们报告了一种纳米多孔多组分金属玻璃的制备相溶解和旋节分解的玻璃前体的钝化相结合。该纳米多孔金属玻璃通过利用纳米多孔结构的大比表面积和氢在金属玻璃中的高扩散率而显示出上级吸氢性能。选择性腐蚀和钝化的简便途径，使电偶腐蚀和合金稳定性脱钩，为金属玻璃功能化开辟了一条新的途径，使其成为用于各种结构和功能应用的大表面积和轻质材料。
Realizing a large specific area in disordered metallic glasses is of great scientific and technological importance. Here we report a nanoporous multicomponent metallic glass fabricated by the combination of selective phase dissolution and passivation of a spinodally decomposed glassy precursor. The nanoporous metallic glass shows superior hydrogen uptake performance by taking advantage of the large specific surface area of the nanoporous structure and the high diffusivity of hydrogen in metallic glasses. The facile route of selective corrosion and passivation, decoupling the galvanic corrosion and alloy stability, opens a new avenue for functionalizing metallic glasses as a large-surface area and lightweight material for various structural and functional applications.