FeNi3–FeNi3N – a high-performance catalyst for overall water splitting

Shuqin Liang; Meizan Jing; Tiju Thomas; Jian Liu; Haichuan Guo; J. Paul Attfield; Ali Saad; Hangjia Shen; Minghui Yang

doi:10.1039/D0SE01491E

FeNi₃–FeNi₃N – a high-performance catalyst for overall water splitting†

Shuqin Liang,‡^ab Meizan Jing,‡^b Tiju Thomas,^c Jian Liu,

^b Haichuan Guo,^a J. Paul Attfield,

^d Ali Saad,^a Hangjia Shen*^a and Minghui Yang

*^a

Author affiliations

* Corresponding authors

^a Solid State Functional Materials Research Laboratory, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
E-mail: shenhj@nimte.ac.cn, myang@nimte.ac.cn

^b State Key Laboratory of Heavy Oil Processing, Beijing Key Lab of Oil & Gas Pollution Control, China University of Petroleum, Beijing 102249, China

^c Department of Metallurgical and Materials Engineering, DST Solar Energy Harnessing Center, Indian Institute of Technology Madras, Adyar, Chennai 600036, Tamil Nadu, India

^d Centre for Science at Extreme Conditions, School of Chemistry University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh, UK

Abstract

The design and development of non-precious metal catalysts with high activity and stability for overall water splitting remains a major challenge. Herein, lamellar FeNi₃N incorporated by FeNi₃ is synthesized via thermal ammonolysis. The abundance of hollow sites in this FeNi₃–FeNi₃N heterostructure significantly enhances the intrinsic activity towards hydrogen evolution reaction, while the heterostructure also offers high electrochemical active surface area for oxygen evolution reaction. FeNi₃–FeNi₃N enables a lower overpotential for both hydrogen and oxygen evolution electrocatalysis in alkaline media. When FeNi₃–FeNi₃N is employed as a bifunctional material for overall water splitting, it shows a cell voltage of only 1.5 V at 10 mA cm⁻² and offers stable performance for up to 48 h at current densities of ∼40 mA cm⁻².

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DOI: https://doi.org/10.1039/D0SE01491E
Article type: Paper
Submitted: 07 Oct 2020
Accepted: 02 Nov 2020
First published: 03 Nov 2020

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Sustainable Energy Fuels, 2020,4, 6245-6250

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FeNi₃–FeNi₃N – a high-performance catalyst for overall water splitting

S. Liang, M. Jing, T. Thomas, J. Liu, H. Guo, J. P. Attfield, A. Saad, H. Shen and M. Yang, Sustainable Energy Fuels, 2020, 4, 6245 DOI: 10.1039/D0SE01491E

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FeNi₃–FeNi₃N – a high-performance catalyst for overall water splitting†

Abstract

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FeNi₃–FeNi₃N – a high-performance catalyst for overall water splitting

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