将PET废弃物升级为CoNi-MOF@MoSe2用于高性能水性超级电容器的混合纳米结构。

IF 6.6 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ChemSusChem Pub Date : 2025-07-02 DOI:10.1002/cssc.202501003
Samikannu Prabu, Madhan Vinu, Kung-Yuh Chiang
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引用次数: 0

摘要

本研究提出了一种可持续升级回收聚对苯二甲酸乙二醇酯(PET)塑料废物(PW)为功能性金属有机框架(MOFs)的新技术,以增强储能应用。为了合成CoNi-MOF纳米晶体,将PET碱性水解得到的对苯二甲酸(TPA)作为一种环保的有机连接剂。利用简单的水热技术将MOFs与超薄MoSe2纳米片进一步集成,开发了一种混合CoNi-MOF@MoSe2电极材料。合成的纳米复合材料具有优异的循环耐久性,在15,000 GCD循环后保持98.46%的电容,并且在0.5 a /g的低电流下具有3,322 F/g的高比电容。在KOH水溶液中,以活性炭(AC)为阳极,CoNi-MOF@MoSe2为阴极,构建了不对称超级电容器(ASC)装置。这种ASC具有优异的电化学性能,在长时间循环后保持95%的原始容量,在450 W kg-1的功率密度下产生59 Wh kg-1的高能量密度。这项工作强调了pw衍生的具有可编程纳米结构的混合MOF材料作为即将到来的改进储能技术的可行选择的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Upcycling Polyethylene Terephthalate-Derived CoNi-Metal-Organic Framework MoSe2 Hybrids for High-Performance Aqueous Supercapacitors.

This study presents a novel technique for sustainably upcycling polyethylene terephthalate (PET) plastic waste (PW) into functional metal-organic frameworks (MOFs) for enhanced energy storage applications. To synthesize CoNi-MOF nanocrystals, terephthalic acid (TPA), which is obtained by alkaline hydrolysis of PET, acts as an environmentally benign organic linker. Further integrating the MOFs with ultrathin MoSe2 nanosheets using a simple hydrothermal technique develops a hybrid CoNi-MOF MoSe2 electrode material. The synthesized nanocomposite demonstrates excellent cycling durability, maintaining 98.46% of its capacitance after 15,000 galvanostatic charge-discharge cycles, along with a high specific capacitance of 3322 F g-1 at a low current of 0.5 A g-1. Furthermore, an asymmetric supercapacitor (ASC) device is constructed with activated carbon (AC) as the anode and CoNi-MOF MoSe2 as the cathode in an aqueous KOH electrolyte. This ASC has exceptional electrochemical performance, maintaining 95% of its original capacity after extended cycling and producing a high energy density of 59 Wh kg- 1 at a power density of 450 W kg- 1. This work highlights the possibility of PW-derived hybrid MOF materials with programmable nanostructures as viable choices for upcoming improved energy storage technologies.

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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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