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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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. This journal is

Original languageEnglish
Pages (from-to)6245-6250
Number of pages6
JournalSustainable Energy and Fuels
Volume4
Issue number12
Early online date3 Nov 2020
DOIs
Publication statusE-pub ahead of print - 3 Nov 2020

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