Issue 13, 2022

Anchoring MoS2 on an ethanol-etched Prussian blue analog for enhanced electrocatalytic efficiency for the oxygen evolution reaction

Abstract

Controllable defects and interface engineering are promising routes for developing efficient noble-metal-free electrocatalysts for the oxygen evolution reaction (OER), the bottleneck of overall water splitting. Herein, we prepared molybdenum disulfide (MoS2)-decorated hollow nanoframes of a Co–Fe Prussian blue analog (Etched-PBA-MoS2) by mild chemical etching of the Co–Fe Prussian blue analog (PBA) nanocubes, followed by MoS2 decoration. We propose using an ethanol–water mixture as a mild etchant, eliminating the need for a capping or stabilizing agent. Prominently benefiting from the enhanced active surface area and the synergistic effect of multi-components, the as-prepared Etched-PBA-MoS2 nanoframes deposited on a microporous carbon cloth could deliver an excellent OER activity with an overpotential of only 260 mV to obtain a current density of 10 mA cm−2 with a Tafel slope of 55 mV dec−1 in 1.0 M KOH. This work provides a protocol to rationally design PBA-based heterostructures for inexpensive electrocatalysts.

Graphical abstract: Anchoring MoS2 on an ethanol-etched Prussian blue analog for enhanced electrocatalytic efficiency for the oxygen evolution reaction

Supplementary files

Article information

Article type
Research Article
Submitted
01 Mar 2022
Accepted
16 May 2022
First published
17 May 2022

Mater. Chem. Front., 2022,6, 1770-1778

Anchoring MoS2 on an ethanol-etched Prussian blue analog for enhanced electrocatalytic efficiency for the oxygen evolution reaction

P. Mukherjee, K. Sathiyan, R. S. Vishwanath and T. Zidki, Mater. Chem. Front., 2022, 6, 1770 DOI: 10.1039/D2QM00183G

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