Improving the performance of environmentally friendly flexible batteries with sodium alginate-NaCl as electrolyte Peningkatan kinerja baterai fleksibel ramah lingkungan dengan elektrolit alginat-NaCl
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bio-based materials, marine based electrolyte, marine biopolymer, proton conductivity, sustainable energy storage
Abstract
The use of synthetic polymer-based electrolytes is often hindered by obstacles related to cost and environmental impact. Alginate is a marine biopolymer that is potentially abundant in Indonesia. This study aims to optimize the composition of a mixture of sodium alginate and NaCl as an integrated electrolyte-separator system to create a flexible battery that not only has stable electrochemical performance but also has the pure mechanical integrity of a bio-based material. The statistical analysis used in this study was a 1-factor Completely Randomized Design consisting of three levels. The electrolyte was prepared by mixing sodium alginate and NaCl, which was then molded and dried to form a membrane. The sodium alginate-NaCl electrolyte membrane ratios were 5:2, 5:3, and 5:4 (w/w). The best ratio for the water uptake physical property with a value of 51.624±0.06, and the best tensile strength was found in the 5:3 ratio, with a value of 0.755±0.06 MPa. The best electrochemical properties were obtained at a ratio of 5:2, with proton conductivity, voltage, and tensile strength values of 1.54×10-5 S/cm; 0.511±0.01 volts, and 0.196±0.007 mA, respectively.
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References
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Copyright (c) 2026 Bustami Ibrahim, Wahdini Rusfadilla, Heru Sumaryanto, Cahyuning Isnaini, Purnama Arafah, Zacky Arivaie Santosa
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