Issue 32, 2021, Issue in Progress

Two-dimension on two-dimension growth: hierarchical Ni0.2Mo0.8N/Fe-doped Ni3N nanosheet array for overall water splitting

Abstract

Developing advanced electrocatalysts with low cost for electrocatalytic water splitting are highly desirable. Herein, we report the design of two-dimension on two-dimension growth of hierarchical Ni0.2Mo0.8N nanosheets on Fe-doped Ni3N nanosheets supported on Ni foam (Ni0.2Mo0.8N/Fe–Ni3N/NF) via hydrothermal reaction and nitridation treatment. In the hierarchical structures, small Ni0.2Mo0.8N nanosheets were uniformly anchored on Fe–Ni3N nanosheets. Due to enhanced electron transfer between Ni0.2Mo0.8N and Fe–Ni3N, Ni0.2Mo0.8N/Fe–Ni3N/NF exhibits superior electrocatalytic activity for the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). After stability tests for 50 h, Ni0.2Mo0.8N/Fe–Ni3N/NF exhibits negligible degradation of the current density for the OER (91% remain) and HER (95% remain), suggesting excellent stability. Owing to the outstanding performance, Ni0.2Mo0.8N/Fe–Ni3N/NF display a cell voltage of 1.54 V (10 mA cm−2) for electrocatalytic overall water splitting.

Graphical abstract: Two-dimension on two-dimension growth: hierarchical Ni0.2Mo0.8N/Fe-doped Ni3N nanosheet array for overall water splitting

Supplementary files

Article information

Article type
Paper
Submitted
17 Feb 2021
Accepted
24 May 2021
First published
01 Jun 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 19797-19804

Two-dimension on two-dimension growth: hierarchical Ni0.2Mo0.8N/Fe-doped Ni3N nanosheet array for overall water splitting

C. Liu, H. Zhu, S. Lu, F. Xu, F. Duan and M. Du, RSC Adv., 2021, 11, 19797 DOI: 10.1039/D1RA01299A

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