Metal-Organic Framework-Derived Fe-Doped Ni3Se4/NiSe2 Heterostructure-Embedded Mesoporous Tubes for Boosting Oxygen Evolution Reaction

Katam Srinivas; Fei Ma; Yanfang Liu; Ziheng Zhang; Yu Wu; Yuanfu Chen

doi:10.1021/acsami.2c16133

Metal-Organic Framework-Derived Fe-Doped Ni₃Se₄/NiSe₂ Heterostructure-Embedded Mesoporous Tubes for Boosting Oxygen Evolution Reaction

ACS Appl Mater Interfaces. 2022 Nov 30;14(47):52927-52939. doi: 10.1021/acsami.2c16133. Epub 2022 Nov 16.

Authors

Katam Srinivas¹, Fei Ma¹, Yanfang Liu¹, Ziheng Zhang¹, Yu Wu¹, Yuanfu Chen¹

Affiliation

¹ School of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu610054, PR China.

PMID: 36382691
DOI: 10.1021/acsami.2c16133

Abstract

It is crucial but challenging to promote sluggish kinetics of oxygen evolution reaction (OER) for water splitting via finely tuning the hierarchical nanoarchitecture and electronic structure of the catalyst. To address such issues, herein we present iron-doped Ni₃Se₄/NiSe₂ heterostructure-embedded metal-organic framework-derived mesoporous tubes (Ni-MOF-Fe-Se-400) realized by an interfacial engineering strategy. Due to the hierarchical nanoarchitecture of conductive two-dimensional nanosheet-constructed MOF-derived mesoporous tubes, coupled with fine tuning of the electronic structure via Fe-doping and interactions between Ni₃Se₄/NiSe₂ heterostructures, the Ni-MOF-Fe-Se-400 catalyst delivers superior OER activity: it requires only a low overpotential of 242 mV to achieve 10 mA cm^-2 (E_j=10), surpassing the benchmark RuO₂ (E_j=10 = 286 mV) and displays exceptional durability in the chronoamperometric i-t test with a small current decay (6.2%) after 72 h. Furthermore, the water splitting system comprises a Ni-MOF-Fe-Se-400 anode and a Pt/C cathode requires a low cell voltage of 1.576 V to achieve E_j=10 with an excellent Faradic efficiency (∼100%), outperforming the RuO₂-Pt/C combination. This work presents a novel interfacial engineering strategy to finely adjust the morphology and electronic structure of the non-noble metal-based OER catalyst via a facile fabrication method.

Keywords: Ni3Se4/NiSe2 heterostructure; heteroatom-doping; mesoporous tubes; oxygen evolution reaction; surface engineering.