Hierarchical architecture of the metallic VTe2/Ti3C2Tx MXene heterostructure for supercapacitor applications†

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materials Chemistry A Pub Date : 2022-10-12 DOI:10.1039/D2TA05904E

Sree Raj K. A., Narad Barman, Sithara Radhakrishnan, Ranjit Thapa and Chandra Sekhar Rout

引用次数: 1

Abstract

Layered two dimensional (2D) materials demonstrate exceptional performance as supercapacitor electrodes due to their unique intrinsic properties. A hybrid 2D/2D heterostructured electrode material can synergize the individual energy storage features...

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超级电容器用金属VTe2/Ti3C2Tx MXene异质结构的分层结构

层状二维(2D)材料由于其独特的内在特性而表现出优异的超级电容器电极性能。一种混合的2D/2D异质结构电极材料可以协同每个层状2D材料的单个储能特性。Ti3C2 MXene是一种新兴的二维材料，具有丰富的储能能力，但在电荷存储过程中存在一定的漏洞。二碲化钒(VTe2)是二维过渡金属二硫化物(TMD)家族中一种有趣但尚未开发的层状材料。由于VTe2独特的结构特点，在储能方面显示出一定的优势。用于储能应用的VTe2/Ti3C2 MXene异质结构的形成至今尚未见报道。本文报道了一种简单易行的水热合成方法，用于制备裸VTe2和用于超级电容器的VTe2/MXene异质结构。系统地分析了异质结构中的储能机理。协同诱导的互作效应使异质结构的比电容提高到250fg ?在长周期运行中具有优异的耐久性。因此，构建了以VTe2/MXene为正极，MoS2/MXene为负极的不对称体系。基于2D/2D异质结构的非对称超级电容器具有优异的性能，能量密度为46.3 W h kg?1，最高功率密度6400w kg?1。此外，密度泛函理论计算预测，由于MXene增强了费米能级附近的电子Te 5P态，从而提高了VTe2/Ti3C2混合材料在超级电容器应用中的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.