一种氨基功能化的金属有机骨架纳米片阵列作为电池型电极用于先进的超级电容器。

An amino-functionalized metal-organic framework nanosheet array as a battery-type electrode for an advanced supercapattery.

机构信息

State Key Laboratory Base of Novel Functional Materials and Preparation Science, School of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China.

出版信息

Dalton Trans. 2019 Nov 26;48(46):17163-17168. doi: 10.1039/c9dt03821c.

DOI:10.1039/c9dt03821c

PMID:31728484

Abstract

An amino-functionalized metal-organic framework nanosheet array supported on nickel foam (NH2-Co-MOF-NS/NF) was fabricated and served as a binder-free battery-type electrode, which exhibited maximum areal specific capacities of 6.7 C cm-2 (1861 μA h cm-2) and 2.9 C cm-2 (806 μA h cm-2) in a three-electrode device and in a supercapattery device, respectively. Moreover, the advanced supercapattery device delivered a high energy density of 0.351 mW h cm-2 at a power density of 1.70 mW cm-2, with superior capacity retention of 91.8% after 5000 cycles. This work can provide an efficient strategy to construct amino-functionalized 2D MOF nanosheets for energy storage and conversion.

摘要

一种氨基功能化的金属有机骨架纳米片阵列负载在泡沫镍上（NH2-Co-MOF-NS/NF）被制备出来，并作为一种无粘结剂的电池型电极，在三电极器件和超级电容器器件中分别表现出最大的面比容量为 6.7 C cm-2（1861 μA h cm-2）和 2.9 C cm-2（806 μA h cm-2）。此外，先进的超级电容器装置在 1.70 mW cm-2 的功率密度下提供了 0.351 mW h cm-2 的高能量密度，经过 5000 次循环后，容量保持率高达 91.8%。这项工作为构建用于能量存储和转换的氨基功能化二维 MOF 纳米片提供了一种有效的策略。