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Article Dans Une Revue Small Année : 2016

Modular Graphene-Based 3D Covalent Networks: Functional Architectures for Energy Applications

Résumé

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.

Domaines

Matériaux
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Dates et versions

hal-03631846 , version 1 (05-04-2022)

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Xiaoyan Zhang, Artur Ciesielski, Fanny Richard, Pengkun Chen, Eko Adi Prasetyanto, et al.. Modular Graphene-Based 3D Covalent Networks: Functional Architectures for Energy Applications. Small, 2016, 12 (8), pp.1044-1052. ⟨10.1002/smll.201503677⟩. ⟨hal-03631846⟩
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