Ultrafine and highly disordered Ni2Fe1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte

Shaofang Fu; Junhua Song; Chengzhou Zhu; Gui-Liang Xu; Khalil Amine; Chengjun Sun; Xiaolin Li; Mark H. Engelhard; Dan Du; Yuehe Lin

doi:10.1016/j.nanoen.2017.12.010

Back

Ultrafine and highly disordered Ni2Fe1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte

Journal article

Open access

Peer reviewed

Ultrafine and highly disordered Ni2Fe1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte

Shaofang Fu, Junhua Song, Chengzhou Zhu, Gui-Liang Xu, Khalil Amine, Chengjun Sun, Xiaolin Li, Mark H. Engelhard, Dan Du and Yuehe Lin

Nano energy, Vol.44(C), pp.319-326

02/01/2018

DOI: https://doi.org/10.1016/j.nanoen.2017.12.010

Files and links (2)

pdf

1-s2.0-S2211285517307759-main1.56 MBDownload View

Open Access

url

https://doi.org/10.1016/j.nanoen.2017.12.010View

Published (Version of record) Open

Abstract

Chemistry

Chemistry, Physical

Materials Science, Multidisciplinary

Nanoscience & Nanotechnology

Physics, Applied

Science & Technology

Materials Science

Physical Sciences

Physics

Technology

Nickel iron hydroxides are the most promising non-noble electrocatalysts for oxygen evolution reaction (OER) in alkaline media. By in situ reduction of metal precursors, compositionally controlled three-dimensional NixFey nanofoams (NFs) are synthesized with high surface area and uniformly distributed bimetallic networks. The resultant ultrafine and highly disordered amorphous Ni2Fe1 NFs exhibit extraordinary electrocatalytic performance toward OER and overall water splitting in alkaline media. At a potential as low as 1.42 V (vs. RHE), Ni2Fe1 NFs can deliver a current density of 10 mA/cm(2) and show negligible activity loss after 12 h stability test. Even at large current flux of 100 mA/cm(2), an ultralow overpotential of 0.27 V is achieved, which is about 0.18 V more negative than benchmark RuO2. Both ex-situ M.ssbauer spectroscopy and X-ray Absorption Spectroscopy reveal a phase separation and transformation for the Ni2Fe1 catalyst during OER process. The evolution of oxidation state and disordered structure of Ni2Fe1 might be a key to the high catalytic performance for OER.

Metrics

2 Record Views

See more details

Details

Title: Ultrafine and highly disordered Ni2Fe1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte
Creators: Shaofang Fu - Washington State University
Junhua Song - Washington State University
Chengzhou Zhu - Washington State University
Gui-Liang Xu - Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA
Khalil Amine - Argonne National Laboratory
Chengjun Sun - Argonne Natl Lab, Xray Sci Div, Lemont, IL 60439 USA
Xiaolin Li - Pacific Northwest National Laboratory
Mark H. Engelhard - Pacific Northwest National Laboratory
Dan Du - Washington State University
Yuehe Lin - Washington State University
Publication Details: Nano energy, Vol.44(C), pp.319-326
Academic Unit: School of Mechanical and Materials Engineering
Publisher: Elsevier
Number of pages: 8
Grant note: Washington State University, USA Department of Energy's Office of Biological and Environmental Research; United States Department of Energy (DOE) DE-AC05-76RL01830 / DOE; United States Department of Energy (DOE) DEAC206CH11357 / U.S. Department of Energy from the Vehicle Technologies Office, Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE); United States Department of Energy (DOE)
Identifiers: 99901227845701842
Language: English
Resource Type: Journal article