Title

Self-assembled N/S codoped flexible graphene paper for high performance energy storage and oxygen reduction reaction

RIS ID

104867

Publication Details

Akhter, T., Islam, M., Faisal, S., Haque, E., Minett, A. I., Liu, H. Kun., Konstantinov, K. & Dou, S. Xue. (2016). Self-assembled N/S codoped flexible graphene paper for high performance energy storage and oxygen reduction reaction. ACS Applied Materials and Interfaces, 8 (3), 2078-2087.

Abstract

A novel flexible three-dimensional (3D) architecture of nitrogen and sulfur codoped graphene has been successfully synthesized via thermal treatment of a liquid crystalline graphene oxide−doping agent composition, followed by a soft self-assembly approach. The high temperature process turns the layer-by-layer assembly into a high surface area macro- and nanoporous free-standing material with different atomic configurations of graphene. The interconnected 3D network exhibits excellent charge capacitive performance of 305 F g−1 (at 100 mV s−1), an unprecedented volumetric capacitance of 188 F cm−3 (at 1 A g−1), and outstanding energy density of 28.44 Wh kg−1 as well as cycle life of 10 000 cycles as a free-standing electrode for an aqueous electrolyte, symmetric supercapacitor device. Moreover, the resulting nitrogen/sulfur doped graphene architecture shows good electrocatalytic performance, long durability, and high selectivity when they are used as metal-free catalyst for the oxygen reduction reaction. This study demonstrates an efficient approach for the development of multifunctional as well as flexible 3D architectures for a series of heteroatom-doped graphene frameworks for modern energy storage as well as energy source applications.

Grant Number

ARC/LE120100104, ARC/LE130100051

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Link to publisher version (DOI)

http://dx.doi.org/10.1021/acsami.5b10545