溶剂/水热法升级回收聚乙烯塑料废弃物制备超级电容器用碳基纳米复合材料

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
M. Kigozi, E. Tebandeke, John Baptist Kirabira, G. Kasozi
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引用次数: 0

摘要

聚乙烯(PE)塑料垃圾的堆积是影响全球所有形式的生命、经济和自然生态系统的最令人担忧的环境问题之一。考虑到这一威胁,创造和平和环保的替代传统处理技术,如将塑料废物转化为珍贵的碳纳米材料,是至关重要的。目前的研究谨慎地采用了一种更清洁的升级回收技术来制造用于超级电容器的碳基纳米材料(cnm)。采用溶剂热/水热合成技术,将PE废料转化为cnm,用于储能超级电容器。当能量密度为21.6 W h kg−1,电流密度为0.25 a g−1时,电化学测试显示比电容为155.5 F g−1。此外,在1.0 a g−1的恒定电流密度下,经过9000次循环后,材料的电容保持率达到98.5%。缩写:AC:活性炭;CNM:碳纳米材料;循环伏安法;EC:电化学系统;EDLC:电双层电容器;EIS:电化学阻抗谱;场发射扫描电子显微镜;FTIR:傅里叶变换红外;GCD:恒流充放电;HDPE:高密度聚乙烯;KOH:氢氧化钾;LLDPE:线性低密度聚乙烯;米歇尔。内格罗蓬特:锰;体育:聚乙烯;Rct:电荷转移电阻;SSA:比表面积;TEM:透射电子显微镜;热重分析;UV-VIS:紫外-可见光谱;本文探索了一种低温、无排放的聚乙烯塑料废弃物转化为碳基纳米材料(CNMs)的升级回收方法。使用不同的表征技术表征CNMs的物理化学性质。将碳材料与活性炭、锰等材料制备成纳米复合材料,并对其进行了电双层电容器储能测试,显示出较高的能量密度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Solvo/hydrothermal upcycling of polyethylene plastic-waste into carbon-based nanocomposite for supercapacitor application
One of the most worrying environmental issues affecting all forms of life, the economy, and natural ecosystems globally is the accumulation of polyethylene (PE) plastic garbage. Creating peaceful and environmentally friendly alternatives to conventional disposal techniques, like transforming plastic waste into cherished carbonaceous nanomaterials, is of utmost importance considering this threat. The current study carefully employed a cleaner upcycling technique to create carbon-based nanomaterials (CNMs) for supercapacitors. Using solvothermal/hydrothermal synthetic techniques, the PE waste was transformed into CNMs used in energy storage supercapacitors application. With an energy density of 21.6 W h kg−1 and a current density of 0.25 A g−1, the electrochemical test showed a specific capacitance of 155.5 F g−1. Additionally, the materials demonstrated 98.5% capacitance retention after 9000 cycles at a constant current density of 1.0 A g−1. Abbreviations: AC: activated carbon; CNM: carbon nanomaterials; CV: cyclic voltammetry; EC: electrochemical system; EDLC: electrical double layer capacitor; EIS: electrochemical impedance spectroscopy; FESEM: field emission scanning electron microscopy; FTIR: Fourier transform infrared; GCD: galvanostatic charge–discharge; HDPE: high-density polyethene; KOH: potassium hydroxide; LLDPE: linear low-density polyethene; Mn: manganese; PE: polyethene; Rct: charge transfer resistance; SSA: specific surface area; TEM: transmission electron microscopy; TGA: thermogravimetric analysis; UV–VIS: ultraviolet–visible spectroscopy; XRD: X-ray diffraction Highlights The article explored a low-temperature and non-emission upcycling method of polyethylene plastic waste into carbon-based nanomaterials (CNMs). CNMs were characterised for physical–chemical properties using different characterisation techniques. The carbon material was used with other materials like activated carbon and manganese to produce nanocomposites tested for electrical double layer capacitor energy storage and exhibited higher energy density.
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来源期刊
Materials Science and Technology
Materials Science and Technology 工程技术-材料科学:综合
CiteScore
2.70
自引率
5.60%
发文量
0
审稿时长
3 months
期刊介绍: 《Materials Science and Technology》(MST) is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.
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