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Updated: Jun 20, 2026

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在基于聚胺的共价有机框架与多壁碳纳米管中的碳基组的激活,以提高伪电容性

Luyi Xiao¹, Yu Yuan¹, Wei Ding¹

¹School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China.

Langmuir : the ACS journal of surfaces and colloids

|November 18, 2024

概括

这项研究在碳纳米管上开发了先进的碳酸丰富聚胺共价有机框架 (COF),用于优异的伪容量储能. 复合材料在电化学设备中表现出了显著的电容和长期稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

由于其结构和功能组,共价有机框架 (COF) 对伪电容电极具有前景.
电导率差和堆叠限制了基于COF的电极的性能.

研究的目的:

通过将它们与多壁碳纳米管 (MWCNTs) 集成来增强COF的电化学性能.
研究由此产生的复合材料的伪容量性质和储能能力.

主要方法:

在MWCNT上聚胺COFs (NTDACOFs) 的局部生长.
电化学表征包括电容量测量,循环稳定性测试和设备组装.
在现场,福里埃变换红外光谱 (FT-IR) 和电极运动分析.

主要成果:

NTDA/MWCNTs复合物在1 A g-1下达到467 F g-1的高容量,超过纯MWCNTs和NTDA COFs.
复合材料表现出优异的电容保留,在10Ag-1的10,000个循环后没有衰变.
一个组装的设备显示了17Wh kg-1的高能量密度和19,000个循环后89.5%的稳定性.

结论:

MWCNTs显著提高了NTDA COFs的电导率和主动站点利用率.
增强的性能归因于NTDACOF中碳基的氧化还原反应,由MWCNTs激活.
NTDA/MWCNTs复合材料是用于先进的伪容量储能应用的非常有前途的材料.

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