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The effect of Potassium iodide (KI) addition to aqueous-based electrolyte (sulfuric acid/ H2SO4) for increase the performance of supercapacitor cells
Erman Taer(a*), Aldila Putri(a), Rakhmawati Farma(a), awitdrus(a), Rika Taslim(b), Apriwandi(a), Agustino(a), Deris Afdal Yusra(a).

a)Department of Physics, University of Riau, 28293 Simpang Baru, Riau, Indonesia
* erman.taer[at]yahoo.com
b)Department of Industrial Engineering, State Islamic University of Sultan Syarif Kasim, 28293 Simpang Baru, Riau, Indonesia

Abstract

Potassium iodide (KI) has been added to aqueous-based electrolyte (sulfuric acid / H2SO4) has succeeded in showing the psuedo-capacitance properties that can increase the specific capacitance of supercapacitor cells. The carbon electrodes for supercapacitor cell made from bamboo stems. As supporting data, surface morphology and crystallinity of carbon electrodes have also been analyzed by using SEM and XRD characterization. Whereas in determining specific capacitance of supercapacitor cells, it was carried out using the cyclic voltammetry (CV) method. The CV test results present the addition of KI 0.05 M in 1M H2SO4 solution has increased the electrode specific capacitance from 159 F g-1 to 200 F g-1.

Keywords: aqueous electrolyte; Potassium iodide; specific capacitance; supercapacitor

Topic: Functional Materials

Link: https://ifory.id/abstract/C7hqxHneYBML

Conference: The 7th International Conference on Advanced Materials Science and Technology (ICAMST 2019)

Plain Format | Corresponding Author (Aldila Putri)

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