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A Facile Template Approach to Nitrogen-doped Hierarchical Porous Carbon Nanospheres from Polydopamine for High-performance Supercapacitors by Shuqiang Xiong; Jinchen Fan; Yan Wang; Jing Zhu; Junrong Yu; Zuming Hu is a Engineering article available to read on EtoBox.

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Nitrogen-doped hierarchical porous carbon nanospheres (NHPCNs) with mesoscale and microscale pores are reported herein for their application in high-performance supercapacitor electrode materials (SCMs). The NHPCNs were facilely prepared via the carbonization of mesoporous polydopamine nanospheres (MPNSs) fabricated by one-step self-polymerization of dopamine using Pluronic F127 as a soft template. The influence of polymerization and carbonation temperatures on the morphologies, structures, and capacitor performances of the as-prepared NHPCNs was investigated systematically. The specific surface area of the NHPCNs can be achieved as high as 1725 m 2 g À1 , together with a pore volume of 1.85 cm 3 g À1 . Due to their unique structure, the NHPCNs can act as high-performance SCMs and exhibit high charge storage capacity with a high specific capacitance of 433 F g À1 in 6 M KOH at a current density of 0.5 A g À1 and excellent stability with 95.7% of the initial capacitance after 10 000 cycles.

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Author

Shuqiang Xiong; Jinchen Fan; Yan Wang; Jing Zhu; Junrong Yu; Zuming Hu

Publisher

Royal Society of Chemistry (RSC)

Published

2017

Language

EN

Field

Engineering (Physical Sciences)