| 초록 |
While ensuring chemical stability, the vanadium redox flow battery (VBR) used in the system has to keep the cost of the membrane low. Our problem is that the existing membrane ( Nafion 117) is very expensive. In order to solve this problem, it is necessary to develop an ion selective membrane that will achieve high stability, while keeping the cost down. To be ideal, ion-exchange membrane must have high ion selectivity and have properties that give it high chemical stability in a strong acid in aqueous solution and it must be of low cost. This is because the system being employed is a redox flow battery in a strong oxidizing solution using strongly oxidizing transition elements. The membrane must be acid and oxidation resistant. In this study, the RFB used for improving the ionic conductivity at room temperature using H2SO4 acid using PEEK sulfonated acid groups. We combined three substances sulfonated acid groups, and the SSA had hydroxyl equivalent conductivity structure and SPEEK. Then the physical characteristics and ionic conductivity changes were observed. |
