School of Chemistry and Chemical Engineering, School of Electronic Information and Electrical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University , 800 Dongchuan Rd, Shanghai 200240, P. R. China.
Department of Chemistry and Food Chemistry, Technische Universität Dresden , Mommsenstrasse 4, 01062 Dresden, Germany.
ACS Appl Mater Interfaces. 2017 Dec 20;9(50):43975-43982. doi: 10.1021/acsami.7b13666. Epub 2017 Dec 11.
The development of versatile strategies toward two-dimensional (2D) porous nanocomposites with tunable pore structures draws immense scientific attention in view of their attractive physiochemical properties and a wide range of promising applications. This paper describes a self-assembly approach for the directed growth of mesoporous polyaniline (PANi) with tunable pore structures and sizes on ultrathin freestanding MoS nanosheets in solution, which produces 2D mesoporous PANi/MoS nanocomposites. The strategy employs spherical and cylindrical micelles, which are formed by the controlled solution self-assembly of block copolymers, as the soft templates for the construction of well-defined spherical and cylindrical mesopores in the 2D PANi/MoS nanocomposites, respectively. With potential applications as supercapacitor electrode materials, the resultant 2D composites show excellent capacitive performance with a maximum capacitance of 500 F g at a current density of 0.5 A g, good rate performance, as well as outstanding stability for charge-discharge cycling. Moreover, the 2D mesoporous nanocomposites offer an opportunity for the study on the influence of different pore structures on their capacitive performance, which helps to understand the pore structure-property relationship of 2D porous electrode materials and to achieve their electrochemical performance control.
二维（2D）多孔纳米复合材料具有可调的孔结构，能够展现出吸引人的物理化学性质和广泛的应用前景，因此开发出多功能的策略引起了科学界的极大关注。本文描述了一种在溶液中自组装定向生长具有可调孔结构和尺寸的介孔聚苯胺（PANi）的方法，该方法利用超薄片层状二硫化钼（MoS）纳米片作为模板，在其表面上生长出二维介孔 PANi/MoS 纳米复合材料。该策略采用了由嵌段共聚物控制溶液自组装形成的球形和圆柱形胶束作为软模板，分别构建了二维 PANi/MoS 纳米复合材料中规则的球形和圆柱形介孔。作为超级电容器电极材料的潜在应用，所得到的二维复合材料表现出优异的电容性能，在 0.5 A g 的电流密度下具有 500 F g 的最大电容、良好的倍率性能以及出色的充放电循环稳定性。此外，二维介孔纳米复合材料为研究不同孔结构对其电容性能的影响提供了机会，有助于理解二维多孔电极材料的孔结构与性能关系，并实现其电化学性能的控制。
