Reversibilitas Reaksi Elektrokimia pada Elektroda Superkapasitor Zeolit Berbasis Silika Sekam Padi yang Dikalsinasi pada Suhu 450, 550, dan 650℃
Abstract: Zeolite based silica
rice husk has been prepared at temperature of 450, 550, and 650℃. This research was conducted to study the effect of calcination
temperature in forming of crystalline phases and standard electron rate
constant (k0). The zeolite K450 was formed quartz and bohmite phases,
zeolite K550 and K650 was formed cristobalite, stishovite, gamma-alumina, and
natrolite phases. Electrochemical reaction of zeolite K450, K550 and K650 are
irreversible. Peak potential oxidation-reduction is between 240 mV and 390 mV.
The higher value of calcination, the higher value of k0. The k0 value of
zeolite K450, K550, K650 at scan rate of 1 V/s are 29,658 x 10-9; 36,398 x
10-9; 77,110 x 10-9 cm/s respectively. Natrolite phase of zeolite K550 and K650
have changed zeolite charge be netral. Based on these result, value k0 of
zeolite K550 and K650 are going to be a reversible.
Penulis: Fatia Ulfah, S
Suprihatin, Posman Manurung
Kode Jurnal: jpfisikadd170095
