Issue 11, 2018

The CoMo-LDH ultrathin nanosheet as a highly active and bifunctional electrocatalyst for overall water splitting

Abstract

The development of inexpensive and bifunctional electrocatalysts based on earth-abundant elements for electrocatalytic water splitting, including the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), is of great significance. Herein, a new type of CoMo-LDH ultrathin nanosheet was synthesized as a bifunctional electrocatalyst with both OER and HER activity for full water splitting. Benefiting from the ultrathin structure and the tuned electronic structure by the doping of Mo6+, the catalyst exhibits superior OER performance with an overpotential of 290 mV to deliver a current density of 10 mA cm−2. When acting as a HER catalyst, the catalyst shows a low overpotential of 115 mV achieving a current density of 10 mA cm−2. Furthermore, the catalyst also shows bifunctional catalytic activity with a voltage of 1.63 V at 10 mA cm−2 and exhibits excellent stability for 30 h when used in the full water splitting cell. Thus, the novel CoMo-LDH ultrathin nanosheet provides a guideline for the future design of highly active and bifunctional materials for water splitting.

Graphical abstract: The CoMo-LDH ultrathin nanosheet as a highly active and bifunctional electrocatalyst for overall water splitting

Supplementary files

Article information

Article type
Research Article
Submitted
18 Aug 2018
Accepted
25 Sep 2018
First published
26 Sep 2018

Inorg. Chem. Front., 2018,5, 2964-2970

The CoMo-LDH ultrathin nanosheet as a highly active and bifunctional electrocatalyst for overall water splitting

J. Bao, Z. Wang, J. Xie, L. Xu, F. Lei, M. Guan, Y. Huang, Y. Zhao, J. Xia and H. Li, Inorg. Chem. Front., 2018, 5, 2964 DOI: 10.1039/C8QI00867A

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