Work

LaCoO3-Based Medium-Entropy Perovskite Electrocatalysts for Zn/Air Batteries with Improved Cycling Capabilities and Durability

Year: 2025

Type: article

Abstract: We synthesized LaCoO 3 perovskites and a stable medium-entropy derivative containing five metal cations. The medium-entropy perovskite presents a significant improvement over the simple LaCoO 3 for oxygen reduction and oxygen evolution reactions, with over 50 and 170 mV improvements in overpotentials, respectively. The materials were implemented as bifunctional electrocatalysts in Zn/air batteries, demonstrating excellent cycling stability for over 400 cycles. The cells employing the multication perovskite show a 2-fold improvement in the specific capacity. Furthermore, the cycling potential is practically constant over several weeks of cycling with the medium-entropy perovskite. All these properties highlight the potential of these multication perovskites for their application in sustainable energy storage devices such as Zn/air batteries.

Source: ACS Applied Energy Materials

DOI: 10.1021/acsaem.5c01944