Issue 28, 2025

Nanoarchitectonics of cobalt/nitrogen-doped carbon with an unbalanced double primitive bicontinuous motif for efficient electrocatalysis

Abstract

In virtue of the smooth mass transfer and unique physical properties enabled by the special three-dimensional (3D) interconnected network, bicontinuous porous functional materials have received extensive attention in catalysis, energy conversion, and cargo delivery. However, endowing materials with meticulous inner bicontinuous geometries and achieving precise control over the pore structures remain a huge challenge. Herein, we report a facile heterogeneous interface-induced topological phase transition method to obtain unbalanced double primitive architectural cobalt/nitrogen-doped (Co/N-doped) carbon particles. The rationally designed dual metal–organic framework (MOF)-derived composite particles retain the original 3D channel with a single primitive cubic structure inherited from their precursors after the pyrolysis process. Noteworthily, a new set of continuous channels with the same topological structure is introduced into the originally solid pore wall by utilizing local thermal stability differences at the heterogeneous interface of two isostructural MOFs. The two sets of channels possess different volumes, presenting an unbalanced bicontinuous structure similar to Im[3 with combining macron]m, with the Co–Nx active sites anchored on the derived thin pore walls. Benefiting from the high-efficiency mass transfer enabled by the 3D open channels of the bicontinuous structure and high surface utilization enabled by the local thin-wall nanotube structure, unbalanced bicontinuous structural Co/N-doped carbon catalysts exhibit enhanced electrocatalytic activity in the oxygen reduction reaction (ORR). The assembled Zn–air battery delivers high peak power density (215 mW cm−2) and large specific capacity (766 mA h g−1). This methodology provides new insights for universally constructing extra channels to achieve 3D periodic interpenetrating networks from the rational structural design and processing of porous materials with appropriate heterogeneous interfaces.

Graphical abstract: Nanoarchitectonics of cobalt/nitrogen-doped carbon with an unbalanced double primitive bicontinuous motif for efficient electrocatalysis

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Edge Article
Submitted
28 Ube 2025
Accepted
30 Mot 2025
First published
16 Jan 2025
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2025,16, 12994-13003

Nanoarchitectonics of cobalt/nitrogen-doped carbon with an unbalanced double primitive bicontinuous motif for efficient electrocatalysis

B. Zhao, B. Liu, J. Han, R. Sun, H. Xu, Y. Sun, G. Chen, Z. Shi, C. Liu, Y. Gao, M. Zhang, S. L. Zhang, Y. Yamauchi and B. Guan, Chem. Sci., 2025, 16, 12994 DOI: 10.1039/D5SC02354H

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, 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 commercial 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