Sulfonated Poly(ether sulfone)-based SIlica Nanocomposite Membranes for High Temperature H2/air operation
- Sulfonated Poly(ether sulfone)-based SIlica Nanocomposite Membranes for High Temperature H2/air operation
- Nambi Krishnan Nagappan; 헨켄스마이어디억; 장종현; 김병각; 김형준; 조은애; 김수길; 임태훈
- PEMFC; polysulfone; silica
- Issue Date
- 추계총회 및 학술발표회 / Korean Electrochemical Society meeting
- , 306-306
- The cost and performance limirations of current perfluorinated polymer membranes have sparked a worldwide research effort to design alternative PEM material with high ionic conductivity, thermal stability, mechanical stability, and good MEA processability. Recent progress in H2/air PEM fuel cells has motivated the need to develop PEM fuel cells that operate above 100 ℃. The main objective of this work is developing a low-cost high temperature membrane with sufficient proton conductivity in a fuel cell at 120 ℃ and 50 % RH in order to obtain a current density of 150mA/cm2 at 0.7 V. Sulfonated poly(ether sulfone)-based silica nanocomposite membranes have been developed and the basic membrane properties such as proton conductivity, thermal stability, mechanical stability, and IEC etc., are studied. The hydrogen fuel cell performance of a sulfonated poly(ethersulfone)-based sihca nanocomposite membrane has been investigated to evaluate its potential as a high temperature PEM material. It has been found that the hydrocarbon based composite membrane show adequate performance in MEAs at 120 ℃ with relative humidity of less than 50%.
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