Zn-doped Mn₃O₄ with lattice distortion as flexible cathode for zinc-ion hybrid supercapacitor

IF 5.8 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Shengjuan Li, Qian He, Fengyan Gao, Henghan Liu, Huifeng Gao, Yuhua Xue, Lei Li
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Abstract

One of the major challenges in developing aqueous zinc-ion hybrid supercapacitors (ZHSCs) is maintaining high performance with a high loading of cathode materials. In the present work, Zn-doped Mn₃O₄ (Zn-Mn₃O₄) nanoparticles with lattice distortion were successfully synthesized on flexible carbon cloth with a high loading up to 11 mg cm⁻² through electrodeposition. The as-prepared aqueous ZHSC with the cathode of Zn-Mn3O4 presented a superior areal capacitance of 3135.3 mF cm⁻² at 2 mA cm⁻² and good stability with 75.35% capacity retention after 1000 cycles. Furthermore, the engineered quasi-solid-state ZHSC using Zn-Mn3O4-0.5 demonstrated high mechanical flexibility and excellent capacity retention across different bending angles, thereby making them attractive candidates for the next generation of flexible wearable devices.

Abstract Image

具有晶格畸变的掺杂Mn₃O₄作为锌离子杂化超级电容器的柔性阴极
开发含水锌离子混合超级电容器(zhsc)的主要挑战之一是在高负极材料负载的情况下保持高性能。在本研究中,通过电沉积,成功地在高负载(高达11 mg cm -⁻²)的柔性碳布上合成了具有晶格畸变的掺杂Mn₃O₄(Zn-Mn₃O₄)纳米颗粒。以Zn-Mn3O4为阴极制备的ZHSC在2 mA cm⁻²时的面电容为3135.3 mF cm⁻²,稳定性好,循环1000次后容量保持率为75.35%。此外,使用Zn-Mn3O4-0.5设计的准固态ZHSC在不同弯曲角度下表现出高机械灵活性和优异的容量保持性,从而使其成为下一代柔性可穿戴设备的有吸引力的候选者。
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来源期刊
Journal of Alloys and Compounds
Journal of Alloys and Compounds 工程技术-材料科学:综合
CiteScore
11.10
自引率
14.50%
发文量
5146
审稿时长
67 days
期刊介绍: The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.
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