'Painting' nanostructured metals-playing with liquid metal
'Painting' nanostructured metals-playing with liquid metal
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“绘画”纳米结构金属——玩转液态金属
DOI：
10.1039/c8nh00045j
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发表时间：
2018
影响因子：
9.7
通讯作者：
Zhang Zhonghua
中科院分区：
文献类型：
--
作者：
Wang Zhenbin;Wang Ying;Gao Hui;Niu Jiazheng;Zhang Jie;Peng Zhangquan;Zhang Zhonghua
材料科学家总是梦想着在金属箔上“画”出纳米结构的金属，就像艺术家在画布上作画一样。在这里，我们第一次用液体镓（Ga）作为涂料实现了这个梦想。通过液态Ga激发的涂覆-合金化-去合金化策略，制备了Au，Ag，Pd，Pt，Cu，Co，Ni七种纳米结构的金属薄膜，并将其负载在相应的金属箔上。由于类似于绘画的操作，具有复杂图案和大尺寸（高达米）的纳米结构膜被成功地生产，而没有任何形状/尺寸限制。纳米结构的金属薄膜具有独特的纳米多孔结构，自支撑的性质，良好的连续性，灵活性和高比表面积的优势，并可以作为强大的电极在设备，如电池，燃料电池，水裂解电解槽等，此外，所提出的策略显示出巨大的潜力，在其他自支撑，灵活的，先进的纳米材料的制造。
Materials scientists always dream to ‘paint’ nanostructured metal on a metallic foil, just as artists paint a painting on a canvas. Herein, we have, for the first time, realized this dream using liquid gallium (Ga) as the paint. Through a liquid Ga stimulated painting–alloying–dealloying strategy, seven kinds of nanostructured metallic films including Au, Ag, Pd, Pt, Cu, Co, and Ni were generally fabricated and supported on the corresponding metallic foils. Owing to the painting-like operation, nanostructured films with complicated patterns and large sizes (up to meters) were successfully produced without any shape/size limitations. The nanostructured metallic films possess advantages like their unique nanoporous structures, self-supporting nature, good continuity, flexibility and high specific surface areas, and could serve as robust electrodes in devices like batteries, fuel cells, water splitting electrolyzers, etc. Moreover, the proposed strategy shows great potential in the fabrication of other self-supporting, flexible, advanced nanomaterials.