Issue 23, 2019

N-doped hierarchical porous metal-free catalysts derived from covalent triazine frameworks for the efficient oxygen reduction reaction

Abstract

The oxygen reduction reaction (ORR) is a core reaction in energy conversion and storage devices. Herein, nitrogen-doped hierarchical micro/mesoporous carbon ORR catalysts derived from covalent triazine frameworks (CTFs) were prepared based on a rational bottom-up strategy. Benefiting from its high specific surface area (1925 m2 g−1), hierarchical micro/mesoporous structure (0–12 nm), three-dimensional conductive network and high pyridinic N and graphitic N content, the optimal CTF-Super P-10 composite catalyst exhibits an onset potential of 0.981 V and a half-wave potential of 0.883 V, with a high limiting current density of around 5.31 mA cm−2 under alkaline conditions. It shows a dominant four-electron pathway, strong stability, and better methanol tolerance than commercial Pt/C in both alkaline conditions and acidic conditions, highlighting a promising strategy for designing high performance metal-free ORR catalysts.

Graphical abstract: N-doped hierarchical porous metal-free catalysts derived from covalent triazine frameworks for the efficient oxygen reduction reaction

Supplementary files

Article information

Article type
Paper
Submitted
09 авг. 2019
Accepted
17 окт. 2019
First published
17 окт. 2019

Catal. Sci. Technol., 2019,9, 6606-6612

N-doped hierarchical porous metal-free catalysts derived from covalent triazine frameworks for the efficient oxygen reduction reaction

Y. Cao, Y. Zhu, X. Chen, B. S. Abraha, W. Peng, Y. Li, G. Zhang, F. Zhang and X. Fan, Catal. Sci. Technol., 2019, 9, 6606 DOI: 10.1039/C9CY01597C

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