Gradient Oxygen Vacancy Perovskite Catalyst

Ampere-level stable water electrolysis

By engineering the spatial distribution of oxygen vacancies via ambient ball-milling, this catalyst maintains high intrinsic activity while significantly improving stability at ampere-level current densities.

Lu, Min · Hu, Yang · Shuhui, Li · Liu, Xiong · An, Li · Peng, Yong · Xi, Pinxian · Yan, Hua

National Science Review 2026

Advantages

Significantly improved stability at ampere-level current densities

Maintains high intrinsic activity under practical working conditions