Ultrahigh peak power density of rechargeable Zn-Air batteries using quadruple perovskite as air-cathode electrocatalyst

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materials Chemistry A Pub Date : 2025-03-12 DOI:10.1039/d5ta00184f

Sujan Sen, Tapas Kumar Mandal

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Abstract

Developing highly active, low-cost and stable bifunctional electrocatalysts is vital for the commercialization of rechargeable Zn-air batteries (ZABs). By far, among the various materials used as catalysts for ZABs, perovskite oxides have gained significant attention due to their structural and compositional flexibility. Herein, we report a quadruple perovskite oxide LaCu3FeTiRu2O12 as a highly efficient OER and ORR active bifunctional electrocatalyst for rechargeable ZABs. An excellent activity with a bifunctional index (BI) of 0.80 V comparable to the state-of-the-art OER-ORR electrocatalyst RuO2-Pt/C (BI = 0.75 V) is demonstrated by the quadruple perovskite. The outstanding bifunctional activity of the compound is believed to stem from its unique crystal structure that provides energetically favorable Fe/Ti/Ru−Cu bridging active sites for the electrocatalysis. The ZAB fabricated using LaCu3FeTiRu2O12 as air-cathode electrocatalyst shows long cyclic stability with an unprecedented peak power density of 635 mW/cm2, which is three times higher than that of the benchmark RuO2-Pt/C.

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来源期刊

Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

19.50

自引率

5.00%

发文量

1892

审稿时长

1.5 months

期刊介绍： The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.