Rechargeable zinc-air battery with bifunctional electrocatalyst of copper oxide and graphene nanoplatelets

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2024-05-20 DOI:10.1016/j.elecom.2024.107760

Barbara A.C. Sá , Tatiana S. Andrade , Rafael R. de Souza , Antero R. Santos Neto , Mariandry Rodriguez , Francisco G.E. Nogueira , Márcio C. Pereira

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Abstract

Rechargeable zinc-air batteries have been identified as promising technologies for energy storage. However, developing cost-effective electrocatalysts that can efficiently facilitate the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is crucial for their advancement. This work investigates synthesized electrocatalysts composed of graphene-Cu₂O deposited on carbon cloth by doctor blading casting method as bifunctional electrodes in a rechargeable Zn-air battery. The battery integrated with graphene-Cu₂O as the air-cathode electrocatalyst showed superior performance in terms of cycling stability compared to that without Cu₂O. This enhanced performance is attributed to the reversibility of Cu⁺/Cu²⁺ species during the redox reactions facilitated by the high electrical conductivity of graphene. Therefore, the results suggest the potential of the synthesized electrodes for advancing the development of rechargeable Zn-air batteries.

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使用氧化铜和石墨烯纳米片双功能电催化剂的可充电锌-空气电池

可充电锌-空气电池已被确定为前景广阔的储能技术。然而，开发能有效促进氧进化反应（OER）和氧还原反应（ORR）的高性价比电催化剂对其发展至关重要。本研究采用刮削铸造法合成了沉积在碳布上的石墨烯-Cu2O 电催化剂，并将其作为可充电锌-空气电池的双功能电极。与不含 Cu2O 的电池相比，集成了石墨烯-Cu2O 作为空气阴极电催化剂的电池在循环稳定性方面表现出更优越的性能。这种性能的提高归因于石墨烯的高导电性促进了氧化还原反应过程中 Cu+/Cu2+ 物种的可逆性。因此，这些结果表明合成的电极具有推动可充电锌-空气电池发展的潜力。

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.