Issue 46, 2017

A simple strategy toward hierarchically porous graphene/nitrogen-rich carbon foams for high-performance supercapacitors

Abstract

Three-dimensional nitrogen-rich porous carbon materials (NPCs), with advantageously tuned physicochemical properties through nitrogen functionalities, have become the research hotspot of energy storage. As electrodes for supercapacitors, NPCs fabricated via a facile strategy are highly desirable to improve the limited performance of N-doped species and obtain high specific capacitance. Herein, a graphene/nitrogen-rich carbon foam with a 3D hierarchically porous architecture has been achieved through assembling graphene oxide sheets into melamine foam. The obtained foam with meso- and micro-pores, nitrogen-enriched content (11.6 at%), and a large surface area (943.7 m2 g−1) delivers enhanced energy storage capabilities of 324, 229, and 196 F g−1 at current densities of 0.1, 1, and 10 A g−1 in a 6 mol L−1 KOH electrolyte, respectively. Moreover, the as-prepared material shows an appreciable capacitance of up to 213 F g−1 at 0.1 A g−1, along with excellent cycling stability (99% retention after 10 000 cycles in a PVA/KOH gel electrolyte) in the related fabricated symmetric solid-state supercapacitors.

Graphical abstract: A simple strategy toward hierarchically porous graphene/nitrogen-rich carbon foams for high-performance supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
14 Okt. 2017
Accepted
01 Nov. 2017
First published
02 Nov. 2017

J. Mater. Chem. A, 2017,5, 24178-24184

A simple strategy toward hierarchically porous graphene/nitrogen-rich carbon foams for high-performance supercapacitors

Y. Chen, Z. Xiao, Y. Liu and L. Fan, J. Mater. Chem. A, 2017, 5, 24178 DOI: 10.1039/C7TA09039K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements