S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Chemical and Biological Engineering (화학생물공학부) Theses (Master's Degree_화학생물공학부)
Poly(arylene ether sulfone) containing tetra(quaternary ammonium pendant groups) for alkaline anion exchange membrane fuel cells
- 공과대학 화학생물공학부(에너지환경 화학융합기술전공)
- Issue Date
- 서울대학교 대학원
- anion exchange membrane ; poly(arylene ether sulfone) ; quaternary ammonium group ; membrane electrode assembly ; solid alkaline fuel cell
- 학위논문 (석사)-- 서울대학교 대학원 : 화학생물공학부(에너지환경 화학융합기술전공), 2014. 2. 성영은.
- A series of poly(arylene ether sulfone)s containing quaternary ammonium pendant groups is prepared for anion conducting membranes. We synthesize a new monomer that contains four amine groups which are changed to ammonium functional groups. By using the functionalized monomer, it is possible to directly obtain fuctionalized poly(arylene ether sulfone) for anion exchange membranes. This process allows precise control of the amount of quaternary ammonium groups and their locations along the polymer backbone. The product is characterized by ¹H NMR, thermogravimetric analysis, water uptake, ion exchange capacity, conductivity and cell performance. The anion exchange membranes formed from these polymers show conductivities above 40 mS/cm at 30 ℃. In fuel cell test, the maximum power output of 77 mW/cm² is achieved using hydrogen and oxygen.