Oxygen-deficient Cu doped NiFeO nanosheets hydroxide as electrode material for efficient oxygen evolution reaction and supercapacitor

Ding Zhang; Xiaoning Tang; Zhaoguang Yang; Ying Yang; Haipu Li

doi:10.1088/1361-6528/abe0e6

Oxygen-deficient Cu doped NiFeO nanosheets hydroxide as electrode material for efficient oxygen evolution reaction and supercapacitor

Nanotechnology. 2021 May 7;32(19):195403. doi: 10.1088/1361-6528/abe0e6.

Authors

Ding Zhang^{1

2}, Xiaoning Tang³, Zhaoguang Yang^{1

2}, Ying Yang¹, Haipu Li^{1

2}

Affiliations

¹ College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China.
² Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety, Changsha 410083, People's Republic of China.
³ Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, People's Republic of China.

PMID: 33508815
DOI: 10.1088/1361-6528/abe0e6

Abstract

The development of renewable energy conversion and storage has triggered the development of electrode materials for oxygen evolution reaction (OER) and supercapacitors. Here we report a highly active Cu doped NiFe nanosheets hydroxide electrode with rich oxygen vacancies (OVs) (denoted as H-NiFeCuO/NF) prepared by in situ anodic electrodeposition on the three-dimensional macroporous nickel foam (NF) substrate followed by heat treatment with H₂. The as-prepared H-NiFeCuO/NF electrode showed the initial potential of 1.44 V (versus RHE) for OER and 980 F g^-1 specific capacity as supercapacitor in 1 M KOH. Further investigation suggested that the tuning of composition and structure by doping copper ions and creating OVs helped accelerate the electrochemical reactions. This practice provides an efficient approach for the fabrication of heteromultimetallic hydroxide monolithic electrode with high performance in OER or supercapacitor application.