在用于储能应用的磺化 Ti3C2Tx MXene 中战略性地插层 AB2O4 包晶氧化物，以协同增强氧化还原活性

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materials Chemistry A Pub Date : 2024-11-21 DOI:10.1039/d4ta05816j

Jitesh Pani, Priyanka Chaudhary, Hitesh Borkar, Meng-Fang Lin

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引用次数: 0

摘要

柔性超级电容器正在成为新一代电子产品的高效、快速存储设备。二维（2D）过渡金属碳化物（MXene）作为超级电容器电极备受关注，因为它们具有导电的层状薄片和表面官能团的可调性。在本研究中，使用二甲基亚砜（DMSO）对 Ti C3 2Tx MXene 表面进行了磺化处理，并夹杂了 AB2O4（A= Co 和 Ni，B= Fe）包晶纳米粒子（NPs）。磺化 MXene（TMS）是在 DMSO 溶剂-电解质（0.1M H2SO4）相互作用下采用超声法处理的。电化学阻抗谱（EIS）和邓恩法分析证实，3 wt% CoFe2O4（CFO）相互作用的 TMS（3CTMS）和 3 wt% NiFe2O4（NFO）相互作用的 TMS（3NTMS）中观察到了氧化还原主导的增强比电容。在 5 mV/sec 条件下，3CTMS 的比电容为 593.81 F/g，在 10,000 次循环后的循环稳定性高达 81.75%。用 3CTMS 制作的柔性对称超级电容器的能量密度和功率密度分别为 4.177 Wh/kg 和 512.17 W/kg。该柔性超级电容器已被用于实时应用，通过充电和放电为 5 个具有不同正向电压的发光二极管（LED）供电。

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Strategic intercalation of AB2O4 perovskite oxides for synergistic enhanced redox activity in sulphonated Ti3C2Tx MXene for energy storage applications

Flexible supercapacitors are emerging as efficient, fast storage devices for new generation electronics. Two-dimensional (2D) transition metal carbides (MXene) have garnered attention as supercapacitor electrodes owing to their conductive layered sheets and the tunability of surface functional groups. In the present work, the Ti C3 2Tx MXene surface was sulphonated using dimethyl sulfoxide (DMSO) and intercalated with AB2O4(A= Co and Ni, B= Fe) perovskite nanoparticle (NPs). The sulphonated MXene (TMS) was processed using a sonication method in DMSO solventelectrolyte (0.1M H2SO4) interaction. to enhance the surface area and redox active sites forThe redox dominated enhanced specific capacitance was observed in 3 wt% CoFe2O4 (CFO) interacted TMS (3CTMS) and 3 wt% NiFe2O4 (NFO) interacted TMS (3NTMS), confirmed by Electrochemical Impedance Spectroscopy (EIS) and the Dunn’s method analysis. The specific capacitance of 3CTMS was found to be 593.81 F/g at 5 mV/sec, with an excellent cyclic stability of 81.75% after 10,000 cycles. A flexible symmetric supercapacitor fabricated with 3CTMS showed energy and power density of 4.177 Wh/kg and 512.17 W/kg, respectively. The flexible supercapacitor has been utilized in real time applications by charging and discharge to power 5 Light-Emitting Diodes (LEDs) with different forward voltages.

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来源期刊

Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

19.50

自引率

5.00%

发文量

1892

审稿时长

1.5 months

期刊介绍： The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.