Electrochemical Deposited Amorphous Bimetallic Nickle-Iron (Oxy)hydroxides Electrocatalysts for Highly Efficient Oxygen Evolution Reaction

The low-cost and high-performance electrocatalysts, especially metal (oxy)hydroxides, for the oxygen evolution reaction (OER) have attracted considerable attention due to their promising OER activity. Amorphous electrocatalysts are often superior to their crystalline counterparts due to their more a...

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Bibliographic Details
Published in:Electrocatalysis 2023-05, Vol.14 (3), p.429-436
Main Authors: Xu, Zhichao, Wang, Jianmin, Cai, Jiajia, He, Yitao, Hu, Jing, Li, Haijin, Li, Yongtao, Zhou, Yong
Format: Article
Language:English
Subjects:
Bimetals
Catalysis
Charge transfer
Chemical synthesis
Chemistry
Chemistry and Materials Science
Electrocatalysts
Electrochemistry
Energy Systems
Hydroxides
Intermetallic compounds
Iron
Iron compounds
Metal foams
Nickel compounds
Noble metals
Oxygen evolution reactions
Physical Chemistry
Water splitting
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Summary:The low-cost and high-performance electrocatalysts, especially metal (oxy)hydroxides, for the oxygen evolution reaction (OER) have attracted considerable attention due to their promising OER activity. Amorphous electrocatalysts are often superior to their crystalline counterparts due to their more actives and structural flexibility. However, using traditional preparation techniques still presents a significant barrier. Herein, the amorphous NiFe (oxy)hydroxides on nickel foam (NF) with large surface area and small charge transfer resistance were fabricated by electrodeposition technique. The as-fabricated NiFe (oxy)hydroxides (Ni:Fe = 1:3) exhibited remarkable electrocatalytic activity and stability for OER with a low overpotential of 245 mV at a current density of 100 mA cm –2 , a small Tafel slope of 76.9 mV dec −1 , which was superior to that of noble metal electrocatalysts (RuO 2 ) and most NiFe-based electrocatalysts. This work provides a facile and effective way to synthesis metal (oxy)hydroxide catalysts towards high-efficiency water splitting.
ISSN:1868-2529
1868-5994
DOI:10.1007/s12678-022-00808-5