Amorphous/crystalline RhFeP metallene for hydrazine-assisted water splitting

Ziqiang Wang; Xinmiao Li; Hugang Zhang; Guanghui Yang; Kai Deng; Hongjie Yu; You Xu; Hongjing Wang; Liang Wang

doi:10.1088/1361-6528/ad2c5b

Amorphous/crystalline RhFeP metallene for hydrazine-assisted water splitting

Nanotechnology. 2024 Mar 14;35(22). doi: 10.1088/1361-6528/ad2c5b.

Authors

Ziqiang Wang¹, Xinmiao Li¹, Hugang Zhang¹, Guanghui Yang¹, Kai Deng¹, Hongjie Yu¹, You Xu¹, Hongjing Wang¹, Liang Wang¹

Affiliation

¹ State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.

PMID: 38387087
DOI: 10.1088/1361-6528/ad2c5b

Abstract

Replacing the slow oxygen evolution reaction with favorable hydrazine oxidation reaction (HzOR) is a green and efficient way to produce hydrogen. In this work, we synthesize amorphous/crystalline RhFeP metallene via phase engineering and heteroatom doping. RhFeP metallene has good catalytic activity and stability for HER and HzOR, and only an ultralow voltage of 18 mV is required to achieve 10 mA cm^-2in a two-electrode hydrazine-assisted water splitting system. The superior result is mainly ascribed to the co-doping of Fe and P and the formation of amorphous/crystalline RhFeP metallene with abundant phase boundaries, thereby adjusting electronic structure and increasing active sites.

Keywords: RhFeP metallene; electrocatalysis; hetero-phase structure; hydrogen evolution reaction; hydrogen production.