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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.

SUBMITTER: Liu C 

PROVIDER: S-EPMC9033661 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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Two-dimension on two-dimension growth: hierarchical Ni<sub>0.2</sub>Mo<sub>0.8</sub>N/Fe-doped Ni<sub>3</sub>N nanosheet array for overall water splitting.

Liu Chen C   Zhu Han H   Lu Shuanglong S   Xu Fangping F   Duan Fang F   Du Mingliang M  

RSC advances 20210501 32

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 Ni<sub>0.2</sub>Mo<sub>0.8</sub>N nanosheets on Fe-doped Ni<sub>3</sub>N nanosheets supported on Ni foam (Ni<sub>0.2</sub>Mo<sub>0.8</sub>N/Fe-Ni<sub>3</sub>N/NF) <i>via</i> hydrothermal reaction and nitridation treatment. In the hierarchical structures, small Ni<sub>0.2</sub>Mo<sub>0.8</sub>N nanosheet  ...[more]

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