Related Experiment Video
Updated: Aug 18, 2025
Tuning Oxide Properties by Oxygen Vacancy Control During Growth and Annealing
Published on: June 9, 2023
The tunability of oxygen evolution reaction performance in La0.67Sr0.33CoO3 van der Waals membrane
Yuan Zhang1, Chen Wang1, Hang Xu1,2
1Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. mingfeng@jlnu.edu.cn.
Abstract:
Cobaltate has multiple valence states of 3d orbitals, and its oxygen evolution reaction (OER) performance can be adjusted by adjusting the oxygen concentration, internal electronic structure and connection between the lattice to afford superior OER activity. Therefore, cobaltate is considered a promising OER catalyst in alkaline media. Herein, the bending state of LSCO thin film was changed by directly applying mechanical bending, and the curvature diameter of the catalytic electrode was directly controlled. The results show that the OER activity of the LSCO thin film electrode considerably improved under an in situ strain of only ∼0.24%. It also showed that the volcanic trend in OER performance involves two parameters: the tolerance factor of Co and activation energy of oxygen.
