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Cao, Feifei; Zhao, Meiting; Yu, Yifu; Chen, Bo; Huang, Ying; Yang, Jian; Cao, Xiehong; Lu, Qipeng; Zhang, Xiao; Zhang, Zhicheng; Tan, Chaoliang; Zhang, Hua
Journal of the American Chemical Society, 06/2016, Volume: 138, Issue: 22Journal Article
Two-dimensional (2D) metal–organic framework (MOF) nanosheets are attracting increasing research interest. Here, for the first time, we report the facile synthesis of 2D porphyrin paddlewheel framework-3 (PPF-3) MOF nanosheets with thickness of ca. 12–43 nm. Through the simultaneous sulfidation and carbonization of PPF-3 MOF nanosheets, we have prepared the 2D nanocomposite of CoS1.097 nanoparticles (NPs) and nitrogen-doped carbon, referred to as CoSNC, in which the CoS1.097 NPs with size of ca. 10 nm are embedded in the nitrogen-doped carbon matrix. As a proof-of-concept application, the obtained 2D CoSNC nanocomposite is used as an electrode material for a supercapacitor, which exhibits a specific capacitance of 360.1 F g–1 at a current density of 1.5 A g–1. Moreover, the composite electrode also shows high rate capability. Its specific capacitance delivered at a current density of 30.0 A g–1 retains 56.8% of the value at 1.5 A g–1.
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