Tuning A-Site Cation Deficiency in PrLaBaCoO Perovskite to Realize Large-Scale Hydrogen Evolution at 2000 mA cm.

Industrial-level hydrogen production from the water electrolysis requires reducing the overpotential (η) as much as possible at high current density, which is closely related to intrinsic activity of the electrocatalysts. Herein, A-site cation deficiency engineering is proposed to screen high-performance catalysts, demonstrating effective Pr LaBaCoO (P LBC) perovskites toward alkaline hydrogen evolution reaction (HER). Among all perovskite compositions, PrLaBaCoO (P0.

Synergistic Interaction of Double/Simple Perovskite Heterostructure for Efficient Hydrogen Evolution Reaction at High Current Density.

Electrocatalytic hydrogen production for industrial level requires highly active and cost-effective catalysts at large current densities. Herein A-site Ba-deficient double perovskite PrBa Co O (PB C) is used as a precursor for fabricating PB C-based double/simple perovskite heterostructure (PB C-DSPH). PB C-DSPH with enhanced electrochemical surface area, more hydrophilic surface, and high conductivity ensures abundant active sites, rapid release of gas, and efficient charge transfer at high current densities.

A-Site Cation-Ordering Layered Perovskite EuBaSrCo Fe O as Highly Active and Durable Electrocatalysts for Oxygen Evolution Reaction.

The developments of high-performance and tolerant catalysts may enable more sustainable energy in the future, especially toward water oxidation. Herein, we report A-site cation-ordering layered perovskite EuBaSrCo Fe O (EBSCF) ( = 0.2-0.