skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ultrafine and highly disordered Ni 2 Fe 1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte

Abstract

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.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Washington State University; USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology
OSTI Identifier:
1462495
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 44; Journal Issue: C; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
NiFe alloys; amorphous catalysts; oxygen evolution reaction; porous nanostructures; water splitting

Citation Formats

Fu, Shaofang, Song, Junhua, Zhu, Chengzhou, Xu, Gui-Liang, Amine, Khalil, Sun, Chengjun, Li, Xiaolin, Engelhard, Mark H., Du, Dan, and Lin, Yuehe. Ultrafine and highly disordered Ni 2 Fe 1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte. United States: N. p., 2018. Web. doi:10.1016/j.nanoen.2017.12.010.
Fu, Shaofang, Song, Junhua, Zhu, Chengzhou, Xu, Gui-Liang, Amine, Khalil, Sun, Chengjun, Li, Xiaolin, Engelhard, Mark H., Du, Dan, & Lin, Yuehe. Ultrafine and highly disordered Ni 2 Fe 1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte. United States. https://doi.org/10.1016/j.nanoen.2017.12.010
Fu, Shaofang, Song, Junhua, Zhu, Chengzhou, Xu, Gui-Liang, Amine, Khalil, Sun, Chengjun, Li, Xiaolin, Engelhard, Mark H., Du, Dan, and Lin, Yuehe. Thu . "Ultrafine and highly disordered Ni 2 Fe 1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte". United States. https://doi.org/10.1016/j.nanoen.2017.12.010.
@article{osti_1462495,
title = {Ultrafine and highly disordered Ni 2 Fe 1 nanofoams enabled highly efficient oxygen evolution reaction in alkaline electrolyte},
author = {Fu, Shaofang and Song, Junhua and Zhu, Chengzhou and Xu, Gui-Liang and Amine, Khalil and Sun, Chengjun and Li, Xiaolin and Engelhard, Mark H. and Du, Dan and Lin, Yuehe},
abstractNote = {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.},
doi = {10.1016/j.nanoen.2017.12.010},
url = {https://www.osti.gov/biblio/1462495}, journal = {Nano Energy},
issn = {2211-2855},
number = C,
volume = 44,
place = {United States},
year = {2018},
month = {2}
}