A Hierarchical Multimetal Oxides@Graphene Fabric Electrode with High Energy Density and Robust Cycling Performance for Flexible Supercapacitors

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-03-06 DOI:10.1021/acs.nanolett.5c00104

Yunchuan Liu, Yongzhe Zhang, Chao Yang, Muhammad Wakil Shahzad, Yichen Yan, Lixin Dai, Wangyang Lu, Wenxing Chen, Ximin He, Ben Bin Xu, Guan Wu

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Abstract

An advanced structure capable of hosting large electrochemical activity with desired balance in ion diffusion kinetics, faradic charge storage, and robust stability is the key to developing high-performance fabric-based electrochemical supercapacitors (FSCs). Herein, we develop a hierarchical multimetal oxides@graphene fabric (Cu-MO@GFF) as a supercapacitor electrode with accelerated ionic diffusion, adsorption energy, faradic redox reaction kinetics, and electrochemical reversibility. As a result, the Cu-MO@GFF presents excellent mass capacitance (534 F g^–1), high rate performance (266 F g^–1 at 10 A g^–1), and good cycle performance (96.9% capacitive retention after 20,000 cycles) in 6 mol L^–1 (M) KOH electrolyte. In addition, the Cu-MO@GFF-based solid-state FSC delivers excellent energy density (11.875 Wh kg^–1), much-improved cyclic stability, and bending capability. On account of the excellent electrochemical behavior, this solid-state FSC can flexibly power various wearable devices (such as luminous tags, bracelets, and wearable watches), which will offer a new avenue for innovating next-generation wearable energy devices.

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.