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祝贺胡茂林老师指导本科生诸葛婧的科研训练成果在Dalton Transactions上发表

发布时间:2021-10-08    来源:化学与材料工程学院    作者:    点击次    [点击关闭]


中文标题:基于二维高核银纳米团簇作为绿色能源的稳定超级电容器

英文标题:Stable supercapacitor electrode based on two-dimensional high nucleus silver nano-clusters as a green energy source

刊物名称及期号、页码Dalton Transactions, 2021, 50, 2606–2615.

作者姓名(中文):诸葛婧,胡茂林,刘宽冠等

作者姓名(英文):Jing Zhuge, Farzaneh Rouhani, Fahime Bigdeli, Xue-Mei Gao, Hamed Kaviani, Hong-Jing Li, Wei Wang, Mao-Lin Hu, Kuan-Guan Liu and Ali Morsali

摘要(英文):Atomically precise silver nanoclusters (Ag-NCs) are known as a hot research area owing to their brilliant features and they have attracted an immense amount of research attention over the last year. There is a lack of sufficient understanding about the Ag-NC synthesis mechanisms that result in optimal silver nano- clusters with an appropriate size, shape, and morphology. In addition, the coexisting flexible coordination of silver ions, the argentophilic interactions, and coordination bonds result in a high level of sophistication in the self-assembly process. Furthermore, the expansion of clusters by the organic ligand to form a high dimensional structure could be very interesting and useful for novel applications in particular. In this study, a novel two-dimensional 14-nucleus silver poly-cluster was designed and synthesized by the com- bination of two synthetic methods. The high nucleus silver cluster units are connected together via tetra- decafluoroazelaic acid (CF2) and this leads to the high stability of the polymer. This highly stable conduc-tive poly-cluster, with bridging groups of difluoromethylene, displays a high energy density (372 Fg−1 at 4.5 Ag−1), excellent cycling stability, and great capacity. This nanocluster shows a high power density and long cycle life over 6000 cycles (95%) and can also tolerate a wide range of scan rates (5 mV s−1 to 1 V s−1), meaning it could act as a green energy source.

研究现状:原子精确银纳米团簇(Ag-NCs)因其独特的性能而成为近年来研究的热点,引起了人们的广泛关注。由于对Ag-NCs的合成机理缺乏足够的了解,因此获得尺寸、形状适宜的最佳银纳米团簇极具挑战性。除此之外,银离子的柔性配位共存、嗜银相互作用和配位键的存在使其自组装过程表现出高度的复杂性。在这项研究中,通过结合环境和溶剂热方法,提出了一种构建14核二维Ag聚簇的简便方法。介绍了一种基于二羧酸氟化物的金属二维多聚团簇作为超级电容器的新型结构。没有任何改性过程的银聚簇作为高性能稳定电极,具有超过6000次循环(约95%)的长循环寿命,优异的功率密度和高电容。氟化基团的存在、高核金属结构的二维扩展和传导性,都有利于形成一个有效的绿色能源超级电容器电极。

创新点:发展了两种全新合成十四核银纳米团簇的方法,可进一步丰富高核银多聚簇合物的种类,并为其在光电材料特别是超级电容电极材料方面的应用打下坚实基础。

原文链接:https://doi.org/10.1039/DODT03608K