Modular Graphene-Based 3D Covalent Networks : Functional Architectures for Energy Applications
Articolo
Data di Pubblicazione:
2016
Citazione:
Modular Graphene-Based 3D Covalent Networks : Functional Architectures for Energy Applications / X. Zhang, A. Ciesielski, F. Richard, P. Chen, E.A. Prasetyanto, L. De Cola, P. Samorì. - In: SMALL. - ISSN 1613-6810. - 12:8(2016), pp. 1044-1052. [10.1002/smll.201503677]
Abstract:
The development of ordered graphene-based materials combining high stability, large surface areas, ability to act as absorbent of relevant chemical species, and solution processability is of significance for energy applications. A poorly explored approach relies on the controlled nanostructuration of graphene into robust and highly ordered 3D networks as a route to further leverage the exceptional properties of this unique material. Here, a simple yet effective and scalable one-step method is reported to prepare graphene-based 3D covalent networks (G3DCNs) with tunable interlayer distance via controlled polymerization of benzidines with graphene oxide at different reaction temperatures under catalyst- and template-free conditions. The reduced form of G3DCNs is used as electrodes in supercapacitors; it reveals a high specific capacitance of 156 F g-1 at a current density of 1 A g-1 in a two-electrode configuration and 460 F g-1 at a current density of 0.5 A g-1 in a three-electrode configuration, combined with an excellent cycling stability over 5000 cycles. The present study will promote the quantitative understanding of structure-property relationship, for the controlled fabrication of 3D graphene-based multifunctional materials.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
covalent networks; energy applications; graphene; supercapacitors
Elenco autori:
X. Zhang, A. Ciesielski, F. Richard, P. Chen, E.A. Prasetyanto, L. De Cola, P. Samorì
Link alla scheda completa: