Document Type : Original Article
Authors
1
Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Jl. Jacub Rais, Tembalang, Semarang, 50275, Indonesia
2
Master Program of Energy, School of Postgraduate Studies, Diponegoro University, Jl. Imam Bardjo SH, Pleburan, Semarang, 50241, Indonesia
3
Department of Chemistry, Dong-A University, Busan, 49315, South Korea
4
Asosiasi Peneliti Indonesia di Korea (APIK), Seoul 07342, South Korea
Abstract
Ambarella is one of the most popular tropical fruits in Southeast Asia. Since it has a high concentration of organic acids, the fruit has the potential to be employed as an electrolyte in biobatteries. In this work, Zn-Cu biobattery electrolytes are derived from the flesh and peel of ambarella fruit. The Open- and Closed-Circuit Voltage, Maximum Power Density, and Battery Capacity of Zn-Cu Biobatteries were investigated. The OCV of the fruit's flesh was 455 mV, while the OCV of its peel was 530 mV. Given the average CCV created by ambarella peel was 471.3 mV and the average CCV generated by ambarella flesh was 342.1 mV. The highest power of Zn-Cu biobatteries was 0.27 mW when fruit flesh was used as the electrolyte and 0.22 mW when fruit peel was used as the electrolyte, Indicating a difference of 18.5%. The peel of an ambarella fruit has a battery capacity of 540 mAh, while the flesh has a capacity of 328 mAh for the Zn-Cu biobattery. This indicates that Zn-Cu with an Ambarella peel has a greater capacity but less power, urging that it be investigated prior to any prospective use.
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