Loading…

MnO2-decorated 3D porous carbon skeleton derived from mollusc shell for high-performance supercapacitor

A three-dimensional porous carbon skeleton with hexagonal channels was synthesized by using mollusc shell as the carbon source. The obtained mollusc shell based macroporous carbon material (MSBPC) has high conductivity and is very favorable for use in the electrolyte penetration and electron transfe...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2017-11, Vol.723, p.505-511
Main Authors: Luo, Xin, Yang, Jiaoyan, Yan, Dan, Wang, Wei, Wu, Xu, Zhu, Zhihong
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A three-dimensional porous carbon skeleton with hexagonal channels was synthesized by using mollusc shell as the carbon source. The obtained mollusc shell based macroporous carbon material (MSBPC) has high conductivity and is very favorable for use in the electrolyte penetration and electron transfer, making it an excellent carbon substrate for composite electrode materials. After incorporation of MnO2 nanosheets, the MSBPC/MnO2 was synthesized and applied in supercapacitors, which exhibited a high specific capacitance of 386 F g−1 at 1 A g−1 with an excellent rate performance (278.7 F g−1 at 10 A g−1), and outstanding cycling stability, with a capacitance retention of 83% after 5000 cycles at 20 A g−1. The good electrochemical performance indicates the high potential of the prepared MSBPC/MnO2 as a novel supercapacitor electrode material with a high power density, excellent long life cycling, and environmental friendliness. •A novel supercapacitor electrode material, the MSBPC/MnO2, was synthesized and reported.•The MSBPC, as a kind of natural bio-carbons materials, is utilized for a conductive substrate.•MnO2, as one of the electrode material candidates, has a high theoretical specific capacitance.•The MSBPC/MnO2 electrode exhibits an outstanding electrochemical performance and a high stability.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2017.06.215