School of Chemistry and Chemical Engineering, Institute of Physical Chemistry, Key laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang 524048, People's Republic of China.
Nanotechnology. 2019 Oct 11;30(41):415402. doi: 10.1088/1361-6528/ab2e1b. Epub 2019 Jul 1.
In this paper, we developed a facile approach to synthesize well-dispersed 3D hierarchical porous MoS architectures with assistance of polyacrylate and demonstrated their applications in lithium ion batteries (LIBs). It was confirmed that the uniform flower-like MoS architectures were assembled by nanosheets comprising about ∼10 stacking layers. Polyacrylate was revealed to have a significant impact on controlling the formation of the uniform hierarchical flower-like architectures with desirable dispersity. It was believed that the polyacrylate could direct assembly of the MoS nanosheets into hierarchical structures and could well stabilize and disperse MoS architectures. Furthermore, a stable cycling capability (839 mAh g at 0.1 A g after 120 cycles) and superior rate ability of the MoS architectures were achieved as anodes for LIBs. This remarkably enhanced electrochemical property could be ascribed to their beneficial structural features and surface-dominated capacitive contribution.
在本文中，我们开发了一种简便的方法，通过聚丙烯酸酯的辅助合成了具有良好分散性的 3D 分级多孔 MoS 结构，并将其应用于锂离子电池（LIBs）中。结果证实，均匀的花状 MoS 结构由约 10 层堆叠的纳米片组装而成。研究表明，聚丙烯酸酯对控制均匀分级花状结构的形成具有重要影响，且具有良好的分散性。可以认为，聚丙烯酸酯可以将 MoS 纳米片定向组装成分级结构，并且可以很好地稳定和分散 MoS 结构。此外，作为 LIBs 的阳极，MoS 结构表现出稳定的循环性能（120 次循环后在 0.1 A g 时为 839 mAh g）和优异的倍率性能。这种显著增强的电化学性能可以归因于其有益的结构特征和表面主导的电容贡献。
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