Cobalt Metal–Organic Framework as a Standalone Material for Supercapattery Electrodes: Achieving Superior Power Density among Advanced Energy Storage Devices

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-04-14 DOI:10.1021/acsmaterialslett.4c0249910.1021/acsmaterialslett.4c02499

Govu Radha, Sreya Kondapalli, T. Leelasree and Himanshu Aggarwal*,

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Abstract

Supercapatteries or hybrid energy storage devices are a promising solution to the energy crisis. An efficient supercapacitor must show high power and energy density, along with excellent cyclic ability and good capacitance retention. However, it is quite challenging as most materials either suffer from a lack of redox-active sites or low surface area values or stability. The current work reports a 2D cobalt MOF, Co[(2,6-NDC)(DPNDI)], as a free-standing electrode material for supercapatteries. The MOF shows a specific capacitance of 503 F g^–1, and a symmetric device achieves a maximum power density of 6433.25 W kg^–1, which is among the highest reported for any MOF-based hybrid device. Additionally, the device shows excellent cycling stability, retains 99.8% capacitance after 30,000 cycles, and can power LED bulbs, making it highly promising for future energy storage applications.

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钴金属-有机框架作为超级电池电极的独立材料：在先进储能装置中实现优越的功率密度

超级电容器或混合储能装置是解决能源危机的一个有希望的解决方案。一个高效的超级电容器必须具有高的功率和能量密度，以及优异的循环能力和良好的电容保持能力。然而，这是相当具有挑战性的，因为大多数材料要么缺乏氧化还原活性位点，要么具有低的表面积值或稳定性。目前的工作报道了一种2D钴MOF， Co[(2,6- ndc)(DPNDI)]，作为超级电容器的独立电极材料。MOF的比电容为503 F- 1，对称器件的最大功率密度为6433.25 W kg-1，这是基于MOF的混合器件中最高的。此外，该器件表现出出色的循环稳定性，在30,000次循环后保持99.8%的电容，并且可以为LED灯泡供电，这使其在未来的储能应用中具有很高的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.