Enhancing Supercapacitor Performance with Zero-Dimensional Tin–Niobium Oxide Heterostructure Composite Spheres: Electrochemical Insights

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganics Pub Date : 2024-05-21 DOI:10.3390/inorganics12060142

V. Thirumal, B. Babu, P. Rajkumar, Jinho Kim, Kisoo Yoo

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Abstract

The development of advanced tin and niobium bimetallic composite electrode materials is crucial for enhancing the performance of supercapacitors. In this paper, we present a novel bimetallic composite material consisting of zero-dimensional spherical-like SnNb2O6 nanocomposites synthesized through the reaction of tin oxide (SnO2) and niobium pentoxide (Nb2O5) precursors, alongside comparative materials. The morphology of the spherical agglomerates comprising Sn/Nb oxide particles that were nucleated on the SnNb2O6 surface was characterized using field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM). The as-prepared heterostructures of the SnNb2O6 composites were analyzed for elemental composition, including Sn3d, Nb3d, and O1s; moreover, chemical oxidative state analysis was performed through X-ray photoelectron spectroscopy (XPS). Additionally, cyclic voltammetry curves exhibited pseudocapacitive redox behavior for the SnNb2O6 composites, while the galvanostatic charge-discharge (GCD) performance demonstrated a maximum specific capacitance of 294.8 F/g at 1 A/g. Moreover, SnNb2O6 composite electrodes demonstrated rapid charge–discharge kinetics and excellent cycling stability, with a capacitance retention of 95.7% over 10,000 cycles. This study elucidated the synthesis of tin–niobium oxide-based composites, demonstrating their potential for high-performance supercapacitors.

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利用零维氧化锡铌异质结构复合球提高超级电容器性能：电化学见解

开发先进的锡铌双金属复合电极材料对于提高超级电容器的性能至关重要。本文介绍了一种新型双金属复合材料，该材料由氧化锡（SnO2）和五氧化二铌（Nb2O5）前体反应合成的零维球状锡铌氧化物纳米复合材料和对比材料组成。利用场发射扫描电子显微镜（FE-SEM）和高分辨率透射电子显微镜（HR-TEM）对在 SnNb2O6 表面成核的由锡/铌氧化物颗粒组成的球形团聚体的形态进行了表征。对制备的 SnNb2O6 复合材料异质结构进行了元素组成分析，包括 Sn3d、Nb3d 和 O1s；此外，还通过 X 射线光电子能谱（XPS）进行了化学氧化态分析。此外，循环伏安曲线显示了 SnNb2O6 复合材料的伪电容氧化还原行为，而电静态充放电（GCD）性能显示，在 1 A/g 时的最大比电容为 294.8 F/g。此外，SnNb2O6 复合电极还表现出快速的充放电动力学和出色的循环稳定性，在 10,000 次循环中电容保持率高达 95.7%。这项研究阐明了锡铌氧化物基复合材料的合成方法，证明了它们在高性能超级电容器方面的潜力。

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

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD