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用于高效电荷存储的多孔金属有机框架的电沉积

Electrodeposition of porous metal-organic frameworks for efficient charge storage.

作者信息

Bailmare Deepa B, Malozyomov Boris V, Deshmukh Abhay D

机构信息

Energy Materials and Devices Laboratory, Department of Physics, RTM Nagpur University, Nagpur, 440033, India.

Department of Electrotechnical Complexes, Novosibirsk State Technical University, 20, Karla Marksa Ave, 630073, Novosibirsk, Russia.

出版信息

Commun Chem. 2024 Aug 10;7(1):178. doi: 10.1038/s42004-024-01260-w.

Abstract

Efficient charge storage is a key requirement for a range of applications, including energy storage devices and catalysis. Metal-organic frameworks are potential materials for efficient charge storage due to their self-supported three-dimensional design. MOFs are high surface area materials made up of coordination of appropriate amounts of metal ions and organic linkers, hence used in various applications. Yet, creating an effective MOF nanostructure with reduced random crystal formation continues to be a difficult task. The energy efficiency and electrochemical yield of bulk electrodes are improved in this study by demonstrating an effective technique for growing MOFs over a conducting substrate utilizing electrodeposition. An exceptionally stable asymmetric supercapacitor is created when activated carbon cloth is combined with the resulting MOF structure that was directly synthesized via an electrochemical method resulting in 97% stability over 5k cycles which is higher than conventional processes. High performance in supercapacitors is ensured by this practical approach for producing MOF electrodes, making it a suitable structure for effective charge storage.

摘要

高效电荷存储是包括储能设备和催化在内的一系列应用的关键要求。金属有机框架由于其自支撑的三维设计,是高效电荷存储的潜在材料。金属有机框架是由适量金属离子和有机连接体配位而成的高比表面积材料,因此被用于各种应用。然而,创建具有减少随机晶体形成的有效金属有机框架纳米结构仍然是一项艰巨的任务。本研究通过展示一种利用电沉积在导电基底上生长金属有机框架的有效技术,提高了块状电极的能量效率和电化学产率。当活性炭布与通过电化学方法直接合成的所得金属有机框架结构相结合时,可创建出一种异常稳定的不对称超级电容器,在5000次循环中具有97%的稳定性,高于传统工艺。这种制备金属有机框架电极的实用方法确保了超级电容器的高性能,使其成为有效电荷存储的合适结构。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8c8/11316736/4a989d4c9ec7/42004_2024_1260_Fig1_HTML.jpg

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