还原氧化石墨烯负载正交钒酸镍超级电容器的电化学性能

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-09-08 DOI:10.1016/j.jtice.2025.106377

Muthukumar Babu , Gubendran Hariharan , Sambandam Bharathi , Kaveri Satheesh , Devarajan Dineshkumar , Ayyaswamy Arivarasan

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引用次数: 0

摘要

研究了钒酸盐掺杂还原氧化石墨烯（rGO）在超级电容器中的电化学性能。金属钒酸盐，如钒酸镍（NV）负载氧化石墨烯暴露于优越的超捕获电极材料的储能应用。方法采用回流法制备钒酸镍纳米颗粒（NPs）和钒酸镍负载还原氧化石墨烯（rGO - NVR）纳米结构。采用博士刀法制备了NV和NVR纳米结构的工作电极。NVR电极在1 M KOH条件下的最大比电容值为1106 Fg-1，而NV电极在5 mVs-1条件下的最大比电容值为354 Fg-1， NVR电极在2 Ag-1条件下的最大比电容值为943 Fg-1，而NV电极的最大比电容值为337 Fg-1。同样，与NV超级电容器（1054 W kg-1和14.67 Wh kg-1）相比，组装的NVR超级电容器的功率和能量密度值分别为2511 W kg-1和34.67 Wh kg-1。此外，在NV NPs中添加还原氧化石墨烯，在5000 GCD循环后，循环稳定性从83%提高到91%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Electrochemical performances of reduced graphene oxide loaded orthorhombic nickel vanadates for supercapacitor applications

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Electrochemical performances of reduced graphene oxide loaded orthorhombic nickel vanadates for supercapacitor applications

Background

This work focuses on the electrochemical performance of binary metal vanadates incorporated reduced graphene oxide (rGO) for supercapacitor application. Metal vanadates such as nickel vanadate (NV) loaded rGO exposed to superior supercapcitive electrode materials for energy storage applications.

Method

The nickel vanadate (NV) nanoparticles (NPs) and nickel vanadate loaded reduced graphene oxide (rGO - NVR) nanostructures were synthesized by reflux method. The working electrodes of NV and NVR nanostructures were developed by Doctor blade method.

Significant finding

The fabricated NVR electrodes delivered the maximum specific capacitance value of 1106 Fg^-1 in 1 M KOH, compared to NV electrodes (354 Fg^-1) at 5 mVs^-1, and 943 Fg^-1 (NVR electrode) compared to 337 Fg^-1 (NV electrode) at 2 Ag^-1. Similarly, the assembled NVR supercapacitors delivered 2511 W kg^-1 and 34.67 Wh kg^-1 of superior power and energy density values, respectively, compared to NV supercapacitors (1054 W kg^-1 and 14.67 Wh kg^-1). Moreover, the addition of rGO in NV NPs enhanced the cyclic stability from 83 % to 91 %, after 5000 GCD cycles.

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.