FeNi3–FeNi3N – a high-performance catalyst for overall water splitting. Issue 12 (9th November 2020)

• Record Type: Journal Article
• Authors: Liang, Shuqin; Jing, Meizan; Thomas, Tiju; Liu, Jian; Guo, Haichuan; Attfield, J. Paul; Saad, Ali; Shen, Hangjia; Yang, Minghui
• Is Part Of: Sustainable energy & fuels. Volume 4:Issue 12(2020)
• Page Start: 6245
• Page End: 6250
• Publication Date: 2020-11-09
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d0se01491e
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : A bifunctional material which has high performance towards overall water splitting in alkaline media is developed by coupling FeNi3 N and FeNi3 in nanoscale. 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 FeNi3 N incorporated by FeNi3 is synthesized via thermal ammonolysis. The abundance of hollow sites in this FeNi3 –FeNi3 N 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 –FeNi3 N enables a lower overpotential for both hydrogen and oxygen evolution electrocatalysis in alkaline media. When FeNi3 –FeNi3 N 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 .