무기첨가제 규소텅스텐산이 음이온교환 복합막 특성에 미치는 영향

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 33; no. 1; pp. 28 - 37
• Main Authors: 이규하(KYU HA LEE), 유동진(DONG JIN YOO)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2022
• Subjects: 기계공학; Activation energy(활성화 에너지); Silicotungstic acid(규소텅스텐산); Ion conductivity(이온전도도); Anion exchange composite membrane(음이온교환 복합막)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2022.33.1.28

In this study, we synthesized a poly(pheneylene oxide) (PPO)-based organic/inorganic composite membrane having silicotungstic acid (STA) for the development of an anion exchange membrane with excellent ionic conductivity and physicochemical stability. The organic/inorganic composite membranes were prepared by introducing different STA contents (0 wt%, 10 wt%, 30 wt%, and 50 wt%) into the quaternizaed(Q)-PPO matrix. The prepared anion exchange membranes were subjected to structural analysis by proton neclear magnetic resonance and Fourier transform infrared, and thermal behavior of membranes was confirmed by thermogravimetric analysis. Among the prepared composite membranes, the ion conductivity of Q-PPO/STA-50 (40.5 mS cm-1) showed 1.46 times compared to that of the pristine membrane (27.6 mS cm-1). Therefore, these results demonstrated that organic/inorganic composite membranes are promising candidates for application of anion exchange membranes.