In-situ iron modified mesoporous silica MCM-48 for electrochemical energy storage applications

IF 2.5 4区材料科学 Q2 CHEMISTRY, APPLIED Journal of Porous Materials Pub Date : 2024-07-10 DOI:10.1007/s10934-024-01657-x

Arnab Kalita, Trishanku Kashyap, Pranjal Saikia, Anup Kumar Talukdar

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Abstract

Electrochemical energy technologies are crucial for a sustainable future, promising to transform energy generation, storage and use with improved efficiency and environmental responsibility. In this study, Fe was integrated into the MCM-48 framework to create a modified mesoporous structure to be used as electrodes for electrochemical storage applications. The materials were thoroughly characterized using various spectroscopic and non-spectroscopic techniques, including XRD, XPS, UV-Vis (DRS), FT-IR, N₂ adsorption-desorption analysis, SEM with EDX, ICP-OES, TEM, TGA and DSC. Cyclic voltammetry and galvanometric charge-discharge studies revealed that the Fe-MCM-48 sample with Si: Fe molar ratio of 20 (Fe-MCM-48 (20)) exhibited pseudocapacitive behaviour, showcasing higher capacitance value of up to 787 F g^− 1 at a current density of 1 A g^− 1. The findings undeniably indicate that Fe-MCM-48 (20) holds promise as a highly effective electrode material for advancing energy storage technologies like supercapacitors.

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用于电化学储能应用的原位铁改性介孔二氧化硅 MCM-48

电化学能源技术对可持续发展的未来至关重要，有望改变能源的生产、储存和使用，提高效率并对环境负责。在本研究中，将铁元素整合到 MCM-48 框架中，形成了一种改性介孔结构，可用作电化学存储应用的电极。利用各种光谱和非光谱技术对材料进行了全面表征，包括 XRD、XPS、UV-Vis (DRS)、FT-IR、N2 吸附-解吸分析、带 EDX 的扫描电镜、ICP-OES、TEM、TGA 和 DSC。循环伏安法和电流计充放电研究表明，硅：铁摩尔比为 20 的 Fe-MCM-48 样品（Fe-MCM-48 (20)）表现出假电容特性，在电流密度为 1 A g- 1 时，电容值高达 787 F g-1。研究结果无疑表明，Fe-MCM-48 (20) 有望成为一种高效的电极材料，推动超级电容器等储能技术的发展。

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来源期刊

Journal of Porous Materials 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.70%

发文量

203

审稿时长

2.6 months

期刊介绍： The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials. Porous materials include microporous materials with 50 nm pores. Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.