The production of supercapacitor carbon electrodes based on sugar palm fronds using chemical and physical activation combination

A. Awitdrus, Decha Apriliany Suwandi, A. Agustino, E. Taer, R. Farma
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引用次数: 1

Abstract

Abstrak. Pembuatan elektroda karbon superkapasitor berbasis limbah pelepah aren dengan kombinasi pengaktifan kimia dan fisika telah berhasil dilakukan. Aktivasi kimia dilakukan dengan menggunakan agen pengaktif 0,3 M KOH dan aktivasi fisika menggunakan gas CO2 pada suhu 900oC selama 2,5 jam. Karakterisasi sifat fisis elektroda meliputi susut massa, tebal, diameter, densitas dan derajat kristalinitas. Karakterisasi sifat elektrokimia elektroda dilakukan dengan menggunakan metode siklis voltametri. Setelah proses karbonisasi-aktivasi fisika, massa, tebal, diameter dan densitas elektroda mengalami penurunan persentase masing-masing adalah 60,87; 30,43; 24,08 dan 5,71%. Elektroda PA-0,3 memiliki struktur semi kristalin, yang ditandai dengan adanya dua puncak yang lebar pada sudut hamburan sekitar 25o dan 46o. kapasitansi spesifik elektroda PA-0,3 berdasarkan variasi laju pemindaian  adalah 90 F g-1 untuk 1 mV s-1, 82 F g-1 untuk 2 mV s-1, dan 71 F g-1 untuk 5 mV s-1. Abstract. The production of supercapacitor carbon electrodes based on sugar palm frond waste using chemical and physical activation combinations have been successfully carried out. The chemical activation was carried out using 0.3 M KOH activating agent and the physical activation using CO2 gas at a temperature of 900oC for 2.5 h. Characterization of the physical properties of the electrodes includes mass loss, thickness, diameter, density and degree of crystallinity. The electrochemical properties characterization of the electrodes was carried out using the cyclic voltammetry method. After the carbonization-physical activation process, the mass, thickness, diameter, and density of the electrodes decreased in the percentage of 60.87, 30.43, 24.08, and 5.71%, respectively. The PA-0.3 electrode has a semi crystalline structure, which characterized by the presence of two broadening peaks at a scattering angle around of 25o and 46o. The specific capacitance of the PA-0.3 electrode based on the scan rate variations is 90 F g-1 for 1 mV s-1, 82 F g-1 for 2 mV s-1, and 71 F g-1 for 5 mV s-1.Keywords: Sugar palm fronds, Chemical activation, Physical activation, Carbon electrode, Supercapacitor 
利用化学和物理活化相结合的方法生产基于糖棕榈叶的超级电容器碳电极
摘要以竞技场加速器废料为基础,结合化学和物理活化生产超级电容器碳电极已经取得了成功。使用0.3 M KOH的活性剂进行化学活化,并使用CO2气体在900℃下进行物理活化2.5小时。电极的物理特性包括质量、厚度、直径、密度和结晶度。电极的电化学性能是使用伏安计循环方法进行的。在物理碳化活化过程之后,电极的质量、厚度、直径和密度分别降低了60,87%;30,43;24.08和5.71%。PA-0.3电极具有半结晶结构,其标记有在约25°和46°的熔融角处较宽的两个峰。已经成功地利用化学和物理活化组合以糖棕榈叶废料为基础生产了超级电容器碳电极。使用0.3M KOH活化剂进行化学活化,使用CO2气体在900℃的温度下进行物理活化2.5小时。电极物理性能的表征包括质量损失、厚度、直径、密度和结晶度。采用循环伏安法对电极的电化学性能进行了表征。在碳化物理活化过程之后,电极的质量、厚度、直径和密度分别降低了60.87、30.43、24.08和5.71%。PA-0.3电极具有半晶体结构,其特征在于在25o和46o附近的散射角处存在两个加宽峰。基于扫描速率变化的PA-0.3电极的比电容为:1 mV s-1时为90 F g-1,2 mV s-1为82 F g-1和5 mV s-1的71 F g-1。关键词:糖棕榈叶,化学活化,物理活化,碳电极,超级电容器
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