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Issue 5, 2016
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Facile synthesis of nitrogen-doped hierarchical porous lamellar carbon for high-performance supercapacitors

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Abstract

Three-dimensional (3D) interconnected N-enriched hierarchical porous lamellar carbon (NPLC) with a multilevel pore structure has been fabricated by a wet impregnation method using waste nitrogen-containing mantis shrimp shell as a carbon precursor and KOH as an impregnation solution. The synthesized NPLC-2 shows a large surface area of 1222.961 m2 g−1 calculated by the BET method, a hierarchical porous structure analyzed by the density functional theory (DFT) model, and a high nitrogen content of 1.78% quantified by X-ray photoelectron spectroscopy (XPS). Moreover, the NPLC-2 sample exhibits an ultra-high specific capacitance of 312.62 F g−1 at 0.3 A g−1, excellent rate capability with a specific capacitance of 272.56 F g−1 at 20.0 A g−1 and outstanding cycling stability with around 96.26% capacitance retention after 10 000 cycles at a high current density of 20.0 A g−1. In addition, NPLC-2 presents a high energy density of 15.05 W h kg−1 at 270 W kg−1, and up to 10.12 W h kg−1 even at a large power density of 14 580 W kg−1. Therefore, the prepared material can be applied in high energy density and high power density demanding fields.

Graphical abstract: Facile synthesis of nitrogen-doped hierarchical porous lamellar carbon for high-performance supercapacitors

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Supplementary files

Article information


Submitted
15 Oct 2015
Accepted
10 Dec 2015
First published
14 Dec 2015

RSC Adv., 2016,6, 3942-3950
Article type
Paper
Author version available

Facile synthesis of nitrogen-doped hierarchical porous lamellar carbon for high-performance supercapacitors

W. Yang, Z. Du, Z. Ma, G. Wang, H. Bai and G. Shao, RSC Adv., 2016, 6, 3942
DOI: 10.1039/C5RA21431A

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