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The Performance of Symmetrical and Asymmetrical Supercapacitor of Aquatic Biomass Carbon Nanosheet
Sri Haryati, Nirwan Syarif, Lee Chew Tin

Universitas Sriwijaya, Universiti Teknologi Malaysia


Abstract

The performance of symmetrical and asymmetrical supercapacitors were determined by using electrochemical impedance spectroscopy, cyclic voltammetry, and charge-discharge galvanostatic methods. The construction of asymmetric supercapacitor was a thick layer electrode of paper-bark wood carbon sheets as anode, etched aluminum foil as cathode and gel contained BaCO3 as electrolyte. The symmetric used carbon thick layer both as anode and cathode. The electrodes were made of carbon - graphite mixture with ratio of 3 : 7, and 10% of binder, supported by a glass plate. The results of charging – discharging tests showed that the symmetrical 3 : 7 supercapacitor has highest capacitance value in ie 0.434 F for 10% BaCO3 electrolyte in polyvinylalcohol media. Cyclic voltammetry measurement showed that the symmetrical has the highest capacitance value i.e., 0.0138 Fg-1. The charge-discharge galvanostatic measurement showed that the symmetrical has 1.445 of charging slope and 1.344 of discharging slope suggesting the charging rate faster than the discharge rate.

Keywords: Ultracapacitor, potensiostat, electrochemistry, electrolyte, polymer

Topic: Nano-materials and applications

Link: https://ifory.id/abstract/9vckndg7C8mf

Conference: The 4th International Conference on Applied Physics and Materials Application (ICAPMA 2019)

Plain Format | Corresponding Author (Nirwan Syarif)

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