Nickel cobalt oxide nanowires with iron incorporation realizing a promising electrocatalytic oxygen evolution reaction. (6th August 2020)

• Record Type: Journal Article
• Authors: Hao, Zewei; Wei, Pengkun; Kang, Hongzhi; Yang, Yang; Li, Jing; Chen, Xue; Guo, Donggang; Liu, Lu
• Is Part Of: Nanotechnology. Volume 31:Number 43(2020)
• Publication Date: 2020-08-06
• Subjects: NiCo2O4 -- Fe-doping -- electrocatalyst -- oxygen evolution reaction; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/aba3d9
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Developing cost-effective electrocatalysts for water electrolysis is a promising strategy to enhance conversion and storage efficiency of sustainable energy. Transition metal oxides have been considered as alternative oxygen evolution reaction (OER) catalysts to replace noble metal-based catalysts. Here, we report a series of Fe-doped NiCo2 O4 (NCO) nanowires with different Fe-doped concentrations, synthesized by a facile solvothermal and calcinations process, as high-efficiency electrocatalysts for OER. Due to abundant catalytically active sites, high-charge transport capability and specific surface area, these as-obtained NCO nanowires exhibit low overpotential and small Tafel slope. Specifically, NCO-0.1 shows the outstanding OER performance with a low overpotential of 297 mV at a current density of 10 mA cm −2 and a small Tafel slope of about 68 mV dec −1 in 1.0 M KOH. This study offers a promising electrocatalyst for the OER in water splitting.