การพัฒนาโฟล์วรีดอกซ์แบตเตอรี่โดยใช้เมมเบรนชนิดเอสพีอีอีเคและอิเล็กโทรไลต์ที่เป็นมิตรต่อสิ่งแวดล้อม

Abstract

In this study, various low-cost sulfonated poly (ether ether ketone) membranes were prepared by casting method differing by weight ratio at 10, 15, and 20% between polymer and dissolve agent as N,N’-dimethylformamide (DMF). The Nafion117 membrane was used as a reference. We studied morphology, physicochemical properties, and cell performance of organic redox flow battery using anthraquinone-2-sulfonic acid (AQS) and 1,2-benzoquinone-3,5-disulfonic acid (BQDS) as electrolytes. The morphology demonstrated dense, homogenous with no defect, and thickness of 60 micrometers membrane. Physicochemical properties were represented by Water uptake, Swelling ratio, Ion exchange capacity, and Degree of sulfonation. Some of the prepared membranes were affected by moisture contamination. The results exhibited potential in rate performance and maintaining stability during cycles despite no significant difference between various SPEEK membranes. Cell performance revealed columbic efficiency at 86%, highest energy efficiency at 39%, and highest power density at 8.36 mW/cm2