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金属玻璃去合金化制备多孔材料

已有 4362 次阅读 2015-6-25 19:30 |个人分类:金属玻璃|系统分类:科研笔记


我们与重庆大学和日本东北大学合作,通过将Al基金属玻璃去合金化制备出Ni/NiO纳米多孔材料,该材料表现出非常优异的赝电容特性,相关结果发表在Corrosion Science 96 (2015) 196。


摘要:

A free-standing nanoporous YNiCometal/metal-oxide composite with hierarchical porosity is fabricated bychemically dealloying Al85Y6Ni6Co3 metallic glass in alkaline solutions. Themixed core–shell-like metal/metal-oxide structure formed during dealloying dueto the active properties of these metals. Time-dependent etching experiments suggest that the formation of large and small pores occur simultaneously, which may be related to the different dissolution rate of Al at different sites. The nanoporous composite with a highly conductive metal core exhibits a high areal capacitance. Moreover, this strategy can be extended to fabricate other nanoporous composites considering that the composition of metallic glass can beeasily tuned.



Corrosion Science 2015_ Hierarchical nanoporous metal metal-oxide c.pdf







http://blog.sciencenet.cn/blog-202254-900565.html

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