超级电容器
循环伏安法
材料科学
整体
活性炭
碳化
碳纤维
生物量(生态学)
电解质
热解
电化学
电极
化学工程
分析化学(期刊)
化学
复合材料
有机化学
吸附
扫描电子显微镜
催化作用
工程类
地质学
物理化学
海洋学
复合数
作者
Erman Taer,E Padang,Novi Yanti,Apriwandi,Rika Taslim
出处
期刊:Journal of physics
[IOP Publishing]
日期:2021-10-01
卷期号:2049 (1): 012072-012072
标识
DOI:10.1088/1742-6596/2049/1/012072
摘要
Abstract Recently, biomass waste has become the focus of several researchers because it has promising potential when processed into porous activated carbon. Abundant availability, uncomplicated processing, and more economical are the reasons for choosing biomass as the basic material for making carbon electrodes for electric energy storage supercapacitors. In this study, Etlingera elatior waste biomass is processed into activated carbon by heating at high temperature and impregnation of 0.5 M ZnCl 2 . The monolith sample was optimized through a single-stage integrated high-temperature pyrolysis process. Where the process of carbonization of N 2 gas from a temperature of 30 °C to 600 °C followed by a physical activation process of CO 2 gas to a temperature of 800 °C. Determination of the physical properties of the electrodes through density characterization, while the electrochemical properties were analyzed by cyclic voltammetry and galvanostatic charge discharge methods. Cyclic voltammetry and galvanostatic charge discharge analysis were performed with 1 M Na 2 SO 4 aqueous electrolyte at a voltage of 0–1 V and a scan rate of 1 mV/s. Furthermore, the high electrochemical behavior of the CV method was found to be 108 F/g, while for the gcd method, the specific capacitance was much higher at 148 F/g at a constant current density of 1.0 A/g. Further calculations found an energy density of 8.23 Wh/kg and a power density of 161 W/kg. These results support the optimization of 0.5 M ZnCl 2 impregnated Etlingera elatior leaves as the base material for activated carbon electrodes to increase the supercapacitor capacitance.
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