Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Metal–polydopamine framework-derived (Co)/N-doped carbon hollow nanocubes as efficient oxygen electrocatalysts

Author affiliations

Abstract

Oxygen electrocatalysis is of great significance for various energy conversion and storage-related applications. Herein, by using in situ polymerization of dopamine on specially designed metal–organic framework (MOF) nanocubes and subsequent annealing treatment, well-defined Co/N-doped carbon hollow nanocubes with high electrocatalytic activity and stability toward the oxygen evolution reaction are obtained. To attain a current density of 10 mA cm−2, the overpotential required for the Co/N-doped carbon hollow nanocubes is only 285 mV, which is comparable to that of commercial RuO2 (270 mV) and lower than those of most MOF-derived ones and other carbon supported Co-based electrocatalysts. Surprisingly, we find that when the Co nanoparticles are leached using simple acid wash, the as-synthesized N-doped carbon hollow nanocubes could act as an efficient electrocatalyst for the oxygen reduction reaction instead. The strategy presented here for controlled design and synthesis of MOF-derived hollow (metal)/N-doped carbon frameworks would offer new prospects for developing efficient oxygen electrocatalysts for electrochemical energy devices.

Graphical abstract: Metal–polydopamine framework-derived (Co)/N-doped carbon hollow nanocubes as efficient oxygen electrocatalysts

Back to tab navigation

Supplementary files

Article information


Submitted
06 Apr 2020
Accepted
11 May 2020
First published
11 May 2020

Sustainable Energy Fuels, 2020, Advance Article
Article type
Paper

Metal–polydopamine framework-derived (Co)/N-doped carbon hollow nanocubes as efficient oxygen electrocatalysts

Y. Jiang, K. Dong, X. Yan, C. Chen, P. Ni, C. Yang and Y. Lu, Sustainable Energy Fuels, 2020, Advance Article , DOI: 10.1039/D0SE00548G

Social activity

Search articles by author

Spotlight

Advertisements