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Hydrothermal Development of Bimetallic Sulfide Nanostructures as an Electrode Material for Supercapacitor Application

超级电容器 电容 材料科学 纳米结构 电极 储能 电化学 双金属片 热液循环 硫化物 纳米技术 假电容器 水平扫描速率 化学工程 硫化铁 光电子学 循环伏安法 化学 冶金 硫黄 金属 功率(物理) 物理 工程类 物理化学 量子力学
作者
Salma Aman,Saeed D. Alahmari,Sajjad Ahmad Khan,Abdullah G. Al‐Sehemi,Syeda Rabia Ejaz,Naseeb Ahmad,F. F. Alharbi,Asma Sadaf,Hafiz Muhammad Tahir Farid
出处
期刊:Energy & Fuels [American Chemical Society]
卷期号:37 (22): 17473-17483 被引量:9
标识
DOI:10.1021/acs.energyfuels.3c03380
摘要

Supercapacitors (SCs) possess specialized capabilities and exhibit rapid charging and discharging rates, making them highly suitable for integration into portable energy storage and conversion devices. These devices have witnessed a notable surge in demand and are increasingly contributing to the overall progress of the global energy industry. However, the bimetallic sulfide displays a high energy density, and high capacitance helps to resolve the limitation of monometallic sulfide. This study examines the advantageous characteristics of AgBiS2 as a viable energy storage medium in electrochemistry. These characteristics encompass a high level of electrical conductivity and a relatively low cost. AgBiS2 nanostructures were effectively synthesized in the laboratory by utilizing a straightforward hydrothermal method. The produced nanostructure of AgBiS2 is subjected to a range of evaluations encompassing electrochemical and physiochemical analyses. A specimen of AgBiS2 was positioned onto a substrate composed of nickel foam to facilitate measurement of its capacitance. The combined effect of Ag and rate and the supercapacitor’s electrochemical performance. The galvanometric charge–discharge (GCD) profile of an AgBiS2 nanostructure, obtained using a three-electrode configuration in 2.0 M KOH, demonstrates a specific capacitance (Cs) of 650 F g–1 at 1 A g–1 current density. Additionally, the nanostructure exhibits a capacitive retention of 89% over 7000 cycles within the potential range 0–0.6 V (Ag/AgCl). When subjected to symmetric analysis, the AgBiS2 electrode exhibits a significant specific capacitance (Cs) of 401 F g–1. This high capacitance is observed at 1 A g–1 in a two-electrode setup, employing an aqueous electrolyte of 2.0 M KOH. The symmetric AgBiS2 electrode-based supercapacitor exhibits a specific energy (SE) of 65 Wh kg–1 and a specific power (SP) of 0.28 W kg–1. The capacitive outcomes depend on the larger interfacial area, synergistic effect, and low resistance value. According to capacitive investigations, the AgBiS2 electrode exhibits potential utility in various domains, including but not limited to supercapacitor applications, photocatalysis, water splitting, and water remediation.
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