Nanosized hyperbranched cobalt and metal-free phthalocyanine intercalated with Pd–C matrix using PVA-TEOS as binder for admirable supercapacitor properties

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-09-21 DOI:10.1016/j.dyepig.2024.112466

Mohammed Yaseen , Mahadevappa Y. Kariduraganavar , AfraQuasar A. Nadaf , Mahesh S. Najare , Mohemmedumar S. Mulla

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Abstract

The expanding global economy resulted mainly from consuming fossil fuels, which are scarce and cause prodigious environmental harm. Mankind is shifting towards sustainable, efficient and clean energy sources known as green energy. The storage of green energy is an urge of time, to fulfil the energy requirements. Supercapacitors are gaining popularity in the field of energy storage due to their excellent safety, cost-effectiveness, and environmental friendliness. The forthright strategy of using a nitrogen-rich phthalocyanine macrocycle as a nanosized particle is to increase surface area resulting in a high specific capacitance. Herein, an innovative approach has been made by synthesising nanosized hyperbranched metal-free/Co-Phthalocyanine characterized by various analytical and spectroscopic techniques. The morphology of the composite was confirmed through physicochemical characterization like BET, SEM, XRD and electrochemical features were studied through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). The electrode modification was carried out using the binder Poly (vinyl alcohol)-Tetraethyl orthosilicate (PVA-TEOS) crosslinked hybrid solution. The intercalated nanosized palladium on carbon matrix with HBCoPc and HBPc at different ratios enhanced the performance of capacitance. Amongst all the ratios, HBCoPc: Pd–C with 30:70 ratio has demonstrated superior specific capacitance of 824.25 F g⁻¹ at 0.5 A g⁻¹. Additionally, the fabricated electrode of HBCoPc: Pd–C and HBPc: Pd–C has exhibited good capacitance retention of 84.03 % and 81.01 % over 5000 cycles, respectively. This work delivers a promising approach towards the development of high-performance supercapacitors using metal phthalocyanine/metal-carbon composites as a new way to manufacture devices for conversion and energy storage.

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使用 PVA-TEOS 作为粘合剂，在 Pd-C 基体中插层纳米级超支化钴和无金属酞菁，实现令人赞叹的超级电容器性能

全球经济的不断发展主要源于化石燃料的消耗，而化石燃料稀缺且对环境造成巨大危害。人类正在转向可持续、高效和清洁的能源，即绿色能源。为了满足能源需求，绿色能源的存储是一种时间的紧迫性。超级电容器因其出色的安全性、成本效益和环保性，在能源存储领域越来越受欢迎。使用富氮酞菁大环作为纳米颗粒的直截了当的策略是增加表面积，从而获得高比电容。在此，我们采用了一种创新方法，通过各种分析和光谱技术合成了纳米级超支化无金属/共酞菁。通过 BET、SEM、XRD 等物理化学表征确认了复合材料的形态，并通过循环伏安法（CV）、电静态充放电法（GCD）和电化学阻抗光谱法（EIS）研究了其电化学特征。电极改性是使用粘合剂聚（乙烯醇）-正硅酸四乙酯（PVA-TEOS）交联混合溶液进行的。在碳基体上以不同比例插层 HBCoPc 和 HBPc 的纳米钯提高了电容性能。在所有比例中，HBCoPc：Pd-C 的比例为 30:70，在 0.5 A g-1 的条件下，比电容高达 824.25 F g-1。此外，HBCoPc: Pd-C 和 HBPc: Pd-C 制成的电极在 5000 次循环中分别表现出 84.03 % 和 81.01 % 的良好电容保持率。这项工作为利用金属酞菁/金属碳复合材料开发高性能超级电容器提供了一种前景广阔的方法，是制造转换和储能设备的新途径。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.