Jump to main content
Jump to site search

Issue 17, 2019
Previous Article Next Article

A novel strategy to boost the oxygen evolution reaction activity of NiFe-LDHs with in situ synthesized 3D porous reduced graphene oxide matrix as both the substrate and electronic carrier

Author affiliations

Abstract

A novel strategy to boost the oxygen evolution reaction (OER) activity of NiFe-LDHs has been developed using reduced graphene oxide (rGO) as both the substrate and electronic carrier. Basically, a GO hydrogel is printed on Ni foam by the doctor blade technique, forming a GO matrix embedded in Ni foam, which is then freeze-dried to turn into a 3-dimensional (3D) porous GO (3D-GO) matrix. NiFe-layered double hydroxide (NiFe-LDH) nanoflakes anchored on the 3D-GO matrix embedded in Ni foam are synthesized by a hydrothermal process, together with the in situ reduction of 3D-GO. The obtained electrode has a high degree of reduction of the porous graphene oxide, the mechanical strength of the NiFe-LDH nanoflakes anchored on the matrix, large active surface area and excellent interface conjunction. Based on optimal conditions, the fabricated electrode shows outstanding electrocatalytic oxygen evolution reaction performance in 1 M KOH aqueous solution, achieving a small overpotential of 170 mV, a Tafel slope of 57 mV decade−1 at a current density of 20 mA cm−2 and a relatively stable operating potential after 2000 cycles of the CV test.

Graphical abstract: A novel strategy to boost the oxygen evolution reaction activity of NiFe-LDHs with in situ synthesized 3D porous reduced graphene oxide matrix as both the substrate and electronic carrier

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Jan 2019, accepted on 29 Mar 2019 and first published on 29 Mar 2019


Article type: Paper
DOI: 10.1039/C9NJ00518H
Citation: New J. Chem., 2019,43, 6555-6562

  •   Request permissions

    A novel strategy to boost the oxygen evolution reaction activity of NiFe-LDHs with in situ synthesized 3D porous reduced graphene oxide matrix as both the substrate and electronic carrier

    Y. Gu, Y. Wang, W. An, Y. Men, Y. Rui, X. Fan and B. Li, New J. Chem., 2019, 43, 6555
    DOI: 10.1039/C9NJ00518H

Search articles by author

Spotlight

Advertisements