High performance Mn doped ZnO loaded rGO electrode and its practical application as an electrode for self-charging supercapacitor device

IF 8.9 2区工程技术 Q1 ENERGY & FUELS

Journal of energy storage Pub Date : 2024-11-27 DOI:10.1016/j.est.2024.114783

Aamir Ahmed , Anoop Singh , Sandeep Arya

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Abstract

In this work, the supercapacitor performance of rGO is enhanced via loading Mn (0.05, 0.075, and 0.1 M) doped ZnO. The morphology, structure, and constituent elements of the material are investigated via material characterization tools. The electrodes are fabricated over a conductive fabric (CF) and their performance is investigated via electrochemical techniques. Mn (0.075 M) doped ZnO loaded rGO displayed the lowest bulk resistance, highest specific capacitance, excellent cyclic stability, and good rate performance. The electrode showed a specific capacitance of 487.3 F g⁻¹ at 2 A g⁻¹ with 81.2 % cyclic stability for 10,000 cycles. A self-charging supercapacitor device is also developed in this study using an Mn (0.075 M) doped ZnO loaded rGO electrode. The device displayed output potential under the influence of external force, bending, and twisting at certain angles. The performance of rGO is successfully enhanced and a potential electrode material for self-charging supercapacitor is developed.

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高性能掺锰氧化锌负载 rGO 电极及其作为自充电超级电容器设备电极的实际应用

在这项研究中，通过添加锰（0.05、0.075 和 0.1 M）掺杂氧化锌，提高了 rGO 的超级电容器性能。通过材料表征工具对材料的形态、结构和组成元素进行了研究。电极是在导电织物（CF）上制造的，其性能通过电化学技术进行了研究。掺杂锰（0.075 M）的氧化锌负载 rGO 显示出最低的体积电阻、最高的比电容、优异的循环稳定性和良好的速率性能。在 2 A g-1 的条件下，该电极的比电容为 487.3 F g-1，循环稳定性为 81.2%，循环次数为 10,000 次。本研究还利用掺杂锰（0.075 M）的氧化锌负载 rGO 电极开发了一种自充电超级电容器装置。该装置在一定角度的外力、弯曲和扭转影响下显示出输出电势。该研究成功地提高了 rGO 的性能，并开发出一种用于自充电超级电容器的潜在电极材料。

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来源期刊

Journal of energy storage Energy-Renewable Energy, Sustainability and the Environment

CiteScore

11.80

自引率

24.50%

发文量

2262

审稿时长

69 days

期刊介绍： Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.