Issue 31, 2023

The structural transformation of metal–organic frameworks towards 2D carbon for a desirable supercapacitor

Abstract

Direct use of 2D carbon-based materials with robust energy efficiency and high specific surface area as commercial potential electrodes is highly workable, yet usually cannot showcase expected performance in terms of conductivity, specific capacitance, and cycling stability. Herein, we report on the fabrication of a distinct kind of porous structured carbon from zinc-based metal–organic framework (Zn-BTC) transformation by a convenient interfacial synthesis method. Specifically, Zn-BTC obtained by generating composition species through a controlled metal–ligand-chain reaction resulted in the reduction of ZnO and the volatilization of Zn, finally producing the proposed porous carbon. Experimental results and structural characterization reveal that the Zn-based MOFs after high pyrolysis not only produce many micropores and mesopores due to gasification and/or evaporation etching of Zn but also convert a high degree of crystalline carbon with a highly dense layered structure, resulting in more electrochemical optimized properties for pure 2D carbon. The resulting hybrid nanomaterials enable enhancement in both specific capacitance and cycling durability, with 62.5 F g−1 at 0.5 A g−1 and capacitance retentions of >90% after 30 000 continuous charge–discharge cycles, respectively. This study will open up a new avenue for the analysis of dynamic chemical processes at high temperatures and for designing highly ordered carbon-based materials for various electrochemical energy applications.

Graphical abstract: The structural transformation of metal–organic frameworks towards 2D carbon for a desirable supercapacitor

Supplementary files

Article information

Article type
Paper
Submitted
29 5 2023
Accepted
10 7 2023
First published
12 7 2023

J. Mater. Chem. C, 2023,11, 10502-10508

The structural transformation of metal–organic frameworks towards 2D carbon for a desirable supercapacitor

Y. Ma, Y. Ge, D. Gao, Z. Li, M. Du, X. Xing, R. Feng and Y. Han, J. Mater. Chem. C, 2023, 11, 10502 DOI: 10.1039/D3TC01861J

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