One-Dimensional La0.2Sr0.8Cu0.4Co0.6O3-δ Nanostructures for Efficient Oxygen Evolution Reaction

Dongshuang Wu; Yidan Chen; Yuelei Bai; Chuncheng Zhu; Mingyi Zhang

doi:10.3390/nano14010064

One-Dimensional La_0.2Sr_0.8Cu_0.4Co_0.6O_3-δ Nanostructures for Efficient Oxygen Evolution Reaction

Nanomaterials (Basel). 2023 Dec 26;14(1):64. doi: 10.3390/nano14010064.

Authors

Dongshuang Wu¹, Yidan Chen¹, Yuelei Bai², Chuncheng Zhu¹, Mingyi Zhang¹

Affiliations

¹ Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China.
² National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, China.

Abstract

Producing oxygen and hydrogen via the electrolysis of water has the advantages of a simple operation, high efficiency, and environmental friendliness, making it the most promising hydrogen production method. In this study, La_0.2Sr_0.8Cu_0.4Co_0.6O_3-δ (LSCC) nanofibers were prepared by electrospinning to utilize non-noble perovskite oxides instead of noble metal catalysts for the oxygen evolution reaction, and the performance and electrochemical properties of LSCC nanofibers synthesized at different firing temperatures were evaluated. In an alkaline environment (pH = 14, 6 M KOH), the nanofibers calcined at 650 °C showed an overpotential of 209 mV at a current density of 10 mA cm^-2 as well as good long-term stability. Therefore, the prepared LSCC-650 NF catalyst shows excellent potential for electrocatalytic oxygen evolution.

Keywords: OER; electrospinning; nanofiber; perovskite.

Grants and funding

JCKYS2022603C028/science foundation of national key laboratory of science and technology on advanced composites in special environments