Issue 2, 2021

Tunable N-doped hollow carbon spheres induced by an ionic liquid for energy storage applications

Abstract

Herein, feasible ionic liquid co-assembly with a silica precursor and carbon precursor was employed to prepare N-doped mesoporous carbon materials with tunable structures. The utilization of an ionic liquid realizes the co-assembly process of silica and resin to form spherical hollow structures under a suitable ethanol/water volume ratio and leads to nitrogen doping for the prepared N-doped hollow carbon spheres (N-HCSs) in situ. The ethanol/water volume ratio strongly affects the morphologies of the N-HCSs, in which an appropriate volume ratio is crucial for the effective formation of a regular spherical morphology. The addition of the silica precursor is key to the formation and enrichment of mesopores, and thus it is helpful to improve the charge transport. N-HCSs with regular spherical morphology, large hollow structure, and rich mesoporous structure show better performance. As a supercapacitor electrode material, the N-HCSs achieve a high capacity and present high cycling stability, suggesting potential for energy storage applications.

Graphical abstract: Tunable N-doped hollow carbon spheres induced by an ionic liquid for energy storage applications

Supplementary files

Article information

Article type
Research Article
Submitted
19 Oct 2020
Accepted
03 Nov 2020
First published
03 Nov 2020

Mater. Chem. Front., 2021,5, 843-850

Tunable N-doped hollow carbon spheres induced by an ionic liquid for energy storage applications

J. Du, L. Liu, H. Wu, H. Lv and A. Chen, Mater. Chem. Front., 2021, 5, 843 DOI: 10.1039/D0QM00839G

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