Jump to main content
Jump to site search


Colloidal synthesis of monodisperse trimetallic IrNiFe nanoparticles as highly active bifunctional electrocatalysts for acidic overall water splitting

Author affiliations

Abstract

The search for high-performance bifunctional electrocatalysts for overall water splitting under acidic conditions is highly desirable for the development of polymer electrolyte membrane (PEM) electrolyzers, whereas, there are still many challenges to fabricate satisfactory electrocatalysts that could exhibit excellent activity with long-term stability. Herein, we report the colloidal synthesis of monodisperse trimetallic IrNiFe nanoparticles (NPs) with an average diameter of 2.2 nm. By taking advantage of ultrasmall monodisperse NPs with narrow size distribution and the strong synergistic electronic effect between Ir, Ni and Fe, the resultant IrNi0.57Fe0.82 NPs exhibit good activity and excellent durability for both the HER and OER in acidic electrolyte. To reach a current density of 10 mA cm−2, the overpotential of the HER and OER in 0.5 M HClO4 is 24 and 284 mV, respectively. Furthermore, the practical application of IrNi0.57Fe0.82 as a bifunctional catalyst for acidic overall water splitting yields a current density of 10 mA cm−2 at 1.64 V with long-term stability.

Graphical abstract: Colloidal synthesis of monodisperse trimetallic IrNiFe nanoparticles as highly active bifunctional electrocatalysts for acidic overall water splitting

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Oct 2017, accepted on 09 Nov 2017 and first published on 09 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA08982A
Citation: J. Mater. Chem. A, 2017, Advance Article
  •   Request permissions

    Colloidal synthesis of monodisperse trimetallic IrNiFe nanoparticles as highly active bifunctional electrocatalysts for acidic overall water splitting

    L. Fu, G. Cheng and W. Luo, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA08982A

Search articles by author

Spotlight

Advertisements