Abstract
AbstractPerovskite‐based catalysts have received a lot attention as bifunctional oxygen evolution reaction and oxygen reduction reaction (ORR/OER) catalysts in secondary rechargeable zinc–air batteries due to their tunable structure, stability at high current densities, low cost, lightweight, and nontoxicity. This paper investigates a new perovskite material, Sr2TiMnO6 (STMO), for a rechargeable zinc–air battery (ZAB). The crystalline structure, morphology, and adsorption/desorption behavior of STMO are thoroughly studied and investigated their catalytic processes. The perovskite catalyst shows high catalytic activities, durability, and endurance in the alkaline medium, resulting in the power density of 97 mW·cm−2, and a specific capacity of 705.21 mAh·g−1. The rechargeable STMO ZAB exhibited good cycling stability with the current density of 3.5 mA·cm−2 for 6.66 h and low overpotential. The observed results promise STMO to be a viable candidate as a functional (ORR/OER) electrocatalyst which can be successfully used for commercial fuel‐cells and metal air batteries.
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