Issue 25, 2018

Uniformly self-decorated Co3O4 nanoparticles on N, S co-doped carbon layers derived from a camphor sulfonic acid and metal–organic framework hybrid as an oxygen evolution electrocatalyst

Abstract

The development of clean hydrogen-based energy technologies depends upon the rational design and synthesis of efficient and earth-abundant electrocatalysts. Despite great efforts, exploring cheap and unique design nanostructured materials for efficient electrocatalysis remains a big challenge. Here, we synthesize a porous co-doped carbon decorated with Co3O4 nanoparticles from pyrolysis of a camphor sulfonic acid and metal–organic framework hybrid. The uniformly self-decorated Co3O4 nanoparticles on N, S co-doped carbon layers (denoted as Co3O4/NSC) offer fast ion/electron transport and thus make the material an excellent oxygen evolution electrocatalyst. The resulting Co3O4/NSC shows an onset potential of 1.41 V versus the reversible hydrogen electrode (vs. RHE) and delivers an anodic current density of 10 mA cm−2 at 1.49 V vs. RHE, demonstrating fast kinetics for the oxygen evolution reaction (OER) with a small Tafel slope of 70 mV dec−1, making it superior to many state-of-the-art cobalt oxide-based catalysts recently reported in the literature.

Graphical abstract: Uniformly self-decorated Co3O4 nanoparticles on N, S co-doped carbon layers derived from a camphor sulfonic acid and metal–organic framework hybrid as an oxygen evolution electrocatalyst

Supplementary files

Article information

Article type
Paper
Submitted
29 mar 2018
Accepted
01 jun 2018
First published
05 jun 2018

J. Mater. Chem. A, 2018,6, 12106-12114

Uniformly self-decorated Co3O4 nanoparticles on N, S co-doped carbon layers derived from a camphor sulfonic acid and metal–organic framework hybrid as an oxygen evolution electrocatalyst

Mohd. Khalid, A. M. B. Honorato, E. A. Ticianelli and H. Varela, J. Mater. Chem. A, 2018, 6, 12106 DOI: 10.1039/C8TA02926A

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